diff --git a/README.md b/README.md index 59fe214..ec1c144 100644 --- a/README.md +++ b/README.md @@ -1,2 +1,4 @@ # blog +bing的博客 +## [kubernetes](kubernetes/readme.md) \ No newline at end of file diff --git a/algorithms/branch_and_bound/bnb.cpp b/algorithms/branch_and_bound/bnb.cpp new file mode 100644 index 0000000..878cc17 --- /dev/null +++ b/algorithms/branch_and_bound/bnb.cpp @@ -0,0 +1,180 @@ +#include +#include +using namespace std; + +vector> randMatrix(int x, int y) +{ + vector> matrix(x); + for (int i = 0; i < x; i++) + { + matrix[i].resize(y); + for (int j = 0; j < y; j++) + { + matrix[i][j] = rand() % 100; + } + } + return matrix; +} + +void display(vector> matrix, int x, int y) +{ + for (int i = 0; i < x; i++) + { + for (int j = 0; j < y; j++) + { + cout << matrix[i][j] << " "; + } + cout << endl; + } + cout << endl; +} + +vector up(vector> matrix, int x, int y) +{ + auto res = vector(3) = {-1, -1, -1}; + if (x == 0) + { + return res; + } + res[0] = matrix[x - 1][y]; + res[1] = x - 1; + res[2] = y; + return res; +} + +vector down(vector> matrix, int x, int y) +{ + auto res = vector(3) = {-1, -1, -1}; + + auto xlen = matrix.size(); + if (x == xlen - 1) + { + return res; + } + res[0] = matrix[x + 1][y]; + res[1] = x + 1; + res[2] = y; + return res; +} + +vector left(vector> matrix, int x, int y) +{ + auto res = vector(3) = {-1, -1, -1}; + + if (y == 0) + { + return res; + } + res[0] = matrix[x][y - 1]; + res[1] = x; + res[2] = y - 1; + return res; +} + +vector right(vector> matrix, int x, int y) +{ + auto res = vector(3) = {-1, -1, -1}; + + auto row = matrix[x]; + auto ylen = row.size(); + if (y == ylen - 1) + { + return res; + } + res[0] = matrix[x][y + 1]; + res[1] = x; + res[2] = y + 1; + return res; +} + +vector>> branch(vector> matrix, int x, int y) +{ + auto branch = vector>>(x * y); + auto index = 0; + for (int i = 0; i < x; i++) + { + for (int j = 0; j < y; j++) + { + branch[index].resize(7); + branch[index][0].resize(1); + branch[index][0][0] = matrix[i][j]; + branch[index][1].resize(1); + + branch[index][1][0] = i; + branch[index][2].resize(1); + + branch[index][2][0] = j; + + branch[index][3] = up(matrix, i, j); + + branch[index][4] = down(matrix, i, j); + branch[index][5] = left(matrix, i, j); + branch[index][6] = right(matrix, i, j); + index++; + } + } + return branch; +} + +int finditem(vector>> branches, int tx, int ty, int plen = 0) +{ + int ulen, dlen, llen, rlen; + ulen = dlen = llen = rlen = plen; + for (auto vi : branches) + { + if (vi[1][0] == tx && vi[2][0] == ty) + { //找到元素 + if (vi[3][0] > vi[0][0]) + { //上 + cout << "up [" << vi[3][0] << "] is great than me [" << vi[0][0] << "]" << endl; + ulen++; + ulen = finditem(branches, vi[3][1], vi[3][2], ulen); + } + if (vi[4][0] > vi[0][0]) + { //下 + cout << "down [" << vi[4][0] << "] is great than me [" << vi[0][0] << "]" << endl; + dlen++; + dlen = finditem(branches, vi[4][1], vi[4][2], dlen); + } + if (vi[5][0] > vi[0][0]) + { //左 + cout << "left [" << vi[5][0] << "] is great than me [" << vi[0][0] << "]" << endl; + llen++; + llen = finditem(branches, vi[5][1], vi[5][2], llen); + } + if (vi[6][0] > vi[0][0]) + { //右 + cout << "right [" << vi[6][0] << "] is great than me [" << vi[0][0] << "]" << endl; + rlen++; + rlen = finditem(branches, vi[6][1], vi[6][2], rlen); + } + } + } + plen = ulen; + if (plen < dlen) + { + plen = dlen; + } + if (plen < llen) + { + plen = llen; + } + if (plen < rlen) + { + plen = rlen; + } + return plen; +} + +int main() +{ + const int x = 4; + const int y = 4; + auto matrix = randMatrix(x, y); + display(matrix, x, y); + auto branches = branch(matrix, x, y); + // display(branches, x * y, 7); + auto plen = finditem(branches, 0, 3); + cout << matrix[0][3] << "\t" << plen << endl; + return 0; +} \ No newline at end of file diff --git a/algorithms/branch_and_bound/matrix.png b/algorithms/branch_and_bound/matrix.png new file mode 100644 index 0000000..fb61936 Binary files /dev/null and b/algorithms/branch_and_bound/matrix.png differ diff --git a/algorithms/branch_and_bound/readme.md b/algorithms/branch_and_bound/readme.md new file mode 100644 index 0000000..22091c4 --- /dev/null +++ b/algorithms/branch_and_bound/readme.md @@ -0,0 +1,210 @@ +# 分支定界法 + +分支定界法（branch and bound）是一种求解整数规划问题的最常用算法。这种方法不但可以求解纯整数规划，还可以求解混合整数规划问题。分支定界法是一种搜索与迭代的方法，选择不同的分支变量和子问题进行分支。 + +通常，把全部可行解空间反复地分割为越来越小的子集，称为分支；并且对每个子集内的解集计算一个目标下界（对于最小值问题），这称为定界。在每次分枝后，凡是界限超出已知可行解集目标值的那些子集不再进一步分枝，这样，许多子集可不予考虑，这称剪枝。这就是分枝定界法的主要思路。 + +***[百度百科](https://baike.baidu.com/item/%E5%88%86%E6%94%AF%E5%AE%9A%E7%95%8C%E6%B3%95)*** + +## 问题示例 + +最近在群里看到一个问题： + +给定m * n矩阵matrix，可以从任意位置开始，向上、向下、向左、向右移动，但要求下一个位置上的元素要大于当前元素。找出最长的递增路径长度。 + +如图，矩阵元素`5`的上下左右分别是`2`,`8`,`4`,`6` + +![matrix](matrix.png) + +根据某算法大佬的指导，使用分支定界法解决此问题。 + +将矩阵的每一个元素作为第一级分支A，对于每一个分支A相邻的上下左右四个元素，作为分支A的子分支B + +选定一个元素An, 对比An与AnBm的大小，当An小于AnBm时，找到AnBm对于的元素Ax，递归循环处理，直至找不到AnBm。每递归一次，路径长度+1，最后返回最大的路径长度。 + +### 代码示例 + +[代码文件](bnb.cpp)(*这是一份快速实现的代码，所以不一定是最优。*) + +```cpp +#include +#include +using namespace std; + +vector> randMatrix(int x, int y) +{ + vector> matrix(x); + for (int i = 0; i < x; i++) + { + matrix[i].resize(y); + for (int j = 0; j < y; j++) + { + matrix[i][j] = rand() % 100; + } + } + return matrix; +} + +void display(vector> matrix, int x, int y) +{ + for (int i = 0; i < x; i++) + { + for (int j = 0; j < y; j++) + { + cout << matrix[i][j] << " "; + } + cout << endl; + } + cout << endl; +} + +vector up(vector> matrix, int x, int y) +{ + auto res = vector(3) = {-1, -1, -1}; + if (x == 0) + { + return res; + } + res[0] = matrix[x - 1][y]; + res[1] = x - 1; + res[2] = y; + return res; +} + +vector down(vector> matrix, int x, int y) +{ + auto res = vector(3) = {-1, -1, -1}; + + auto xlen = matrix.size(); + if (x == xlen - 1) + { + return res; + } + res[0] = matrix[x + 1][y]; + res[1] = x + 1; + res[2] = y; + return res; +} + +vector left(vector> matrix, int x, int y) +{ + auto res = vector(3) = {-1, -1, -1}; + + if (y == 0) + { + return res; + } + res[0] = matrix[x][y - 1]; + res[1] = x; + res[2] = y - 1; + return res; +} + +vector right(vector> matrix, int x, int y) +{ + auto res = vector(3) = {-1, -1, -1}; + + auto row = matrix[x]; + auto ylen = row.size(); + if (y == ylen - 1) + { + return res; + } + res[0] = matrix[x][y + 1]; + res[1] = x; + res[2] = y + 1; + return res; +} + +vector>> branch(vector> matrix, int x, int y) +{ + auto branch = vector>>(x * y); + auto index = 0; + for (int i = 0; i < x; i++) + { + for (int j = 0; j < y; j++) + { + branch[index].resize(7); + branch[index][0].resize(1); + branch[index][0][0] = matrix[i][j]; + branch[index][1].resize(1); + + branch[index][1][0] = i; + branch[index][2].resize(1); + + branch[index][2][0] = j; + + branch[index][3] = up(matrix, i, j); + + branch[index][4] = down(matrix, i, j); + branch[index][5] = left(matrix, i, j); + branch[index][6] = right(matrix, i, j); + index++; + } + } + return branch; +} + +int finditem(vector>> branches, int tx, int ty, int plen = 0) +{ + int ulen, dlen, llen, rlen; + ulen = dlen = llen = rlen = plen; + for (auto vi : branches) + { + if (vi[1][0] == tx && vi[2][0] == ty) + { //找到元素 + if (vi[3][0] > vi[0][0]) + { //上 + cout << "up [" << vi[3][0] << "] is great than me [" << vi[0][0] << "]" << endl; + ulen++; + ulen = finditem(branches, vi[3][1], vi[3][2], ulen); + } + if (vi[4][0] > vi[0][0]) + { //下 + cout << "down [" << vi[4][0] << "] is great than me [" << vi[0][0] << "]" << endl; + dlen++; + dlen = finditem(branches, vi[4][1], vi[4][2], dlen); + } + if (vi[5][0] > vi[0][0]) + { //左 + cout << "left [" << vi[5][0] << "] is great than me [" << vi[0][0] << "]" << endl; + llen++; + llen = finditem(branches, vi[5][1], vi[5][2], llen); + } + if (vi[6][0] > vi[0][0]) + { //右 + cout << "right [" << vi[6][0] << "] is great than me [" << vi[0][0] << "]" << endl; + rlen++; + rlen = finditem(branches, vi[6][1], vi[6][2], rlen); + } + } + } + plen = ulen; + if (plen < dlen) + { + plen = dlen; + } + if (plen < llen) + { + plen = llen; + } + if (plen < rlen) + { + plen = rlen; + } + return plen; +} + +int main() +{ + const int x = 4; + const int y = 4; + auto matrix = randMatrix(x, y); + display(matrix, x, y); + auto branches = branch(matrix, x, y); + // display(branches, x * y, 7); + auto plen = finditem(branches, 0, 3); + cout << matrix[0][3] << "\t" << plen << endl; + return 0; +} +``` \ No newline at end of file diff --git a/autotest/appium/installation.md b/autotest/appium/installation.md new file mode 100644 index 0000000..de7adb4 --- /dev/null +++ b/autotest/appium/installation.md @@ -0,0 +1,74 @@ +# 安装appium + +本安装文档仅在appium1.21上测试通过。 + +## 配置运行环境 + +### 运行环境依赖项目 + +环境|版本|说明 +--|--|-- +MAC OS |11.4| +xcode|9.4.3 +nodejs|12 +python|3.5.8 +Homebrew|3.2.1| + +### 安装依赖 + +#### Homebrew + +官方安装方法 + +``` +/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install.sh)" +``` + +由于官方地址通常会被墙，建议使用gitee上的 + +``` +/bin/zsh -c "$(curl -fsSL https://gitee.com/cunkai/HomebrewCN/raw/master/Homebrew.sh)" +``` + +#### nodejs + +使用`brew`安装 + +``` +brew install nodejs +``` + +下载官方二进制包 + +``` +cd /opt +sudo wget https://nodejs.org/dist/v14.17.3/node-v14.17.3-darwin-x64.tar.gz +sudo tar node-v14.17.3-darwin-x64.tar.gz +sudo ln -s node-v14.17.3-darwin-x64 node +sudo echo 'PATH=$PATH:/opt/node/bin' >> /etc/profile +``` + +#### appium + +下载官方版本安装 + +``` +https://github.com/appium/appium-desktop/releases/download/v1.21.0/Appium-mac-1.21.0.dmg +``` + +#### appium-doctor + +使用npm安装 + +``` +npm install -g appium-doctor +``` + +#### 其他依赖 + +暂时还没统计。 + +### 配置环境 + +使用 `appium-doctor --ios`检测，确保每项都是`√` + diff --git a/autotest/appium/readme.md b/autotest/appium/readme.md new file mode 100644 index 0000000..84efe4f --- /dev/null +++ b/autotest/appium/readme.md @@ -0,0 +1 @@ +# appium \ No newline at end of file diff --git a/demo/Dockerfile b/demo/Dockerfile new file mode 100644 index 0000000..2340a8b --- /dev/null +++ b/demo/Dockerfile @@ -0,0 +1,12 @@ +FROM golang:1.15 as builder +WORKDIR /workspace +ENV GOPROXY=https://goproxy.cn,direct GO111MODULE=on +COPY main.go main.go +RUN CGO_ENABLED=0 GOOS=linux GOARCH=amd64 GO111MODULE=on go build -a -o main main.go && mkdir /data + +FROM scratch +COPY --from=builder /workspace/main / +COPY --from=builder /data / +VOLUME ["/data"] +EXPOSE 8080 +ENTRYPOINT ["/main"] diff --git a/demo/Makefile b/demo/Makefile new file mode 100644 index 0000000..470ef18 --- /dev/null +++ b/demo/Makefile @@ -0,0 +1,10 @@ +IMAGE="registry.bing89.com/tools/demo:1.0" + +# Build the docker image +docker-build: + docker build . -t ${IMAGE} + +# Push the docker image +docker-push: docker-build + docker push ${IMAGE} + diff --git a/demo/main.go b/demo/main.go new file mode 100644 index 0000000..552a731 --- /dev/null +++ b/demo/main.go @@ -0,0 +1,73 @@ +package main + +import ( + "fmt" + "log" + "os" + "net/http" + "net" +) + +func get(resp http.ResponseWriter, req *http.Request){ + hostname, err := os.Hostname() + if err != nil { + resp.Write([]byte(fmt.Sprintf("get hostname error:%v", err))) + return + } + addrs, err := net.InterfaceAddrs() + if err != nil { + resp.Write([]byte(fmt.Sprintf("get ip address error:%v", err))) + return + } + addrString := "" + for _, addr := range addrs{ + addrString += " " + addr.String() + } + resp.Write([]byte(fmt.Sprintf("response from host: %s, ip is:%s", hostname, addrString))) +} + +//read the file which path is "/data/test.txt" +func readFile(resp http.ResponseWriter, req *http.Request){ + file, err := os.Open("/data/test.txt") + if err != nil { + resp.Write([]byte(fmt.Sprintf("open /data/test.txt error:%v", err))) + return + } + defer file.Close() + data := make([]byte, 1024) + n, err := file.Read(data) + if err != nil { + resp.Write([]byte(fmt.Sprintf("read /data/test.txt error:%v", err))) + return + } + resp.Write(data[0:n]) +} + +//write a string to the file +func writeFile(resp http.ResponseWriter, req *http.Request){ + file, err := os.OpenFile("/data/test.txt", os.O_RDWR|os.O_APPEND, os.ModePerm) + if err != nil { + resp.Write([]byte(fmt.Sprintf("open /data/test.txt error:%v", err))) + return + } + defer file.Close() + hostname, _ := os.Hostname() + _, err = file.Write([]byte(fmt.Sprintf("write by pod %s", hostname))) + if err != nil { + resp.Write([]byte(fmt.Sprintf("write /data/test.txt error:%v", err))) + return + } + resp.Write([]byte("write file successed.")) +} + +func main (){ + router := http.DefaultServeMux + router.HandleFunc("/", get) + router.HandleFunc("/read", readFile) + router.HandleFunc("/write", writeFile) + log.Println("listen on 0.0.0.0:8080") + err := http.ListenAndServe("0.0.0.0:8080", nil) + if err != nil { + log.Fatalln(err) + } +} \ No newline at end of file diff --git a/demo/readme.md b/demo/readme.md new file mode 100644 index 0000000..2605103 --- /dev/null +++ b/demo/readme.md @@ -0,0 +1,16 @@ +# demo + +这是一个由go语言编写的基本http服务，用于各种测试。 + +## 编译 + +```bash +CGO_ENABLED=0 GOOS=linux go build -a -installsuffix cgo -o main main.go +``` + +## 打包 + +```bash +docker build -t demo:1.0 . +``` + diff --git a/docker/registry/docker-registry.yaml b/docker/registry/docker-registry.yaml new file mode 100644 index 0000000..7552b8a --- /dev/null +++ b/docker/registry/docker-registry.yaml @@ -0,0 +1,84 @@ +kind: Namespace +apiVersion: v1 +metadata: + name: bing +--- +apiVersion: v1 +kind: ConfigMap +metadata: + name: docker-registry +data: + config.yml: | + version: 0.1 + log: + fields: + service: registry + storage: + cache: + blobdescriptor: inmemory + filesystem: + rootdirectory: /var/lib/registry + http: + addr: :5000 + headers: + X-Content-Type-Options: [nosniff] + health: + storagedriver: + enabled: true + interval: 10s + threshold: 3 + +--- +apiVersion: apps/v1 +kind: Deployment +metadata: + name: registry + namespace: bing +spec: + selector: + matchLabels: + app: registry + version: "2.0" + template: + metadata: + labels: + app: registry + version: "2.0" + spec: + containers: + - name: registry + image: registry:2 + resources: + limits: + memory: "512Mi" + cpu: "500m" + ports: + - containerPort: 5000 + volumeMounts: + - name: library + mountPath: /var/lib/registry + - name: config + mountPath: /etc/docker/registry + volumes: + - name: library + nfs: + path: /data2/registry + server: 192.168.0.248 + - name: config + configMap: + name: docker-registry +--- +apiVersion: v1 +kind: Service +metadata: + name: registry + namespace: bing +spec: + selector: + app: registry + version: "2.0" + ports: + - port: 5000 + targetPort: 5000 + nodePort: 30500 + type: NodePort diff --git a/docker/registry/registy.nginx.conf b/docker/registry/registy.nginx.conf new file mode 100644 index 0000000..b951944 --- /dev/null +++ b/docker/registry/registy.nginx.conf @@ -0,0 +1,38 @@ +upstream docker-registry { + server 172.16.0.3:20500; +} + +server { + listen 443; + server_name registry.bing89.com; + ssl on; + ssl_certificate conf.d/ssl/registry.bing89.com.pem; + ssl_certificate_key conf.d/ssl/registry.bing89.com.key; + proxy_set_header Host $http_host; + proxy_set_header X-Real-IP $remote_addr; + client_max_body_size 0; + chunked_transfer_encoding on; + add_header 'Docker-Distribution-Api-Version' 'registry/2.0' always; + location / { + auth_basic "Restricted"; + auth_basic_user_file conf.d/auth/registry.bing89.com.txt; + proxy_set_header Host $http_host; + proxy_set_header X-Real-IP $remote_addr; + proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; + proxy_set_header X-Forwarded-Proto $scheme; + proxy_read_timeout 900; + proxy_pass http://docker-registry; + } + location /_ping { + auth_basic off; + proxy_pass http://docker-registry; + } + location /v2/_ping { + auth_basic off; + proxy_pass http://docker-registry; + } + location /v2/_catalog { + auth_basic off; + proxy_pass http://docker-registry; + } +} \ No newline at end of file diff --git a/etcd/backup_restore.md b/etcd/backup_restore.md new file mode 100644 index 0000000..f2d69be --- /dev/null +++ b/etcd/backup_restore.md @@ -0,0 +1,6 @@ +# etcd 备份与还原 + +## 备份 + +[参考](https://github.com/coreos/etcd-operator/blob/master/example/etcd-backup-operator/backup_cr.yaml) +[参考](https://kubernetes.io/zh/docs/tasks/administer-cluster/configure-upgrade-etcd/) \ No newline at end of file diff --git a/etcd/readme.md b/etcd/readme.md new file mode 100644 index 0000000..92463e4 --- /dev/null +++ b/etcd/readme.md @@ -0,0 +1 @@ +# etcd \ No newline at end of file diff --git a/go.mod b/go.mod new file mode 100644 index 0000000..16f8990 --- /dev/null +++ b/go.mod @@ -0,0 +1,46 @@ +module blog.bing89.com + +go 1.17 + +require ( + github.com/coreos/go-oidc/v3 v3.1.0 + github.com/spf13/cobra v1.3.0 + k8s.io/api v0.23.1 + k8s.io/apimachinery v0.23.1 + k8s.io/client-go v0.23.1 +) + +require ( + github.com/davecgh/go-spew v1.1.1 // indirect + github.com/go-logr/logr v1.2.0 // indirect + github.com/gogo/protobuf v1.3.2 // indirect + github.com/golang/protobuf v1.5.2 // indirect + github.com/google/go-cmp v0.5.6 // indirect + github.com/google/gofuzz v1.1.0 // indirect + github.com/googleapis/gnostic v0.5.5 // indirect + github.com/imdario/mergo v0.3.5 // indirect + github.com/inconshreveable/mousetrap v1.0.0 // indirect + github.com/json-iterator/go v1.1.12 // indirect + github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect + github.com/modern-go/reflect2 v1.0.2 // indirect + github.com/spf13/pflag v1.0.5 // indirect + golang.org/x/crypto v0.0.0-20210817164053-32db794688a5 // indirect + golang.org/x/net v0.0.0-20211209124913-491a49abca63 // indirect + golang.org/x/oauth2 v0.0.0-20211104180415-d3ed0bb246c8 // indirect + golang.org/x/sys v0.0.0-20211205182925-97ca703d548d // indirect + golang.org/x/term v0.0.0-20210615171337-6886f2dfbf5b // indirect + golang.org/x/text v0.3.7 // indirect + golang.org/x/time v0.0.0-20210723032227-1f47c861a9ac // indirect + google.golang.org/appengine v1.6.7 // indirect + google.golang.org/protobuf v1.27.1 // indirect + gopkg.in/inf.v0 v0.9.1 // indirect + gopkg.in/square/go-jose.v2 v2.5.1 // indirect + gopkg.in/yaml.v2 v2.4.0 // indirect + gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b // indirect + k8s.io/klog/v2 v2.30.0 // indirect + k8s.io/kube-openapi v0.0.0-20211115234752-e816edb12b65 // indirect + k8s.io/utils v0.0.0-20210930125809-cb0fa318a74b // indirect + sigs.k8s.io/json v0.0.0-20211020170558-c049b76a60c6 // indirect + sigs.k8s.io/structured-merge-diff/v4 v4.1.2 // indirect + sigs.k8s.io/yaml v1.2.0 // indirect +) diff --git a/go.sum b/go.sum new file mode 100644 index 0000000..39e869a --- /dev/null +++ b/go.sum @@ -0,0 +1,897 @@ +cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw= +cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw= +cloud.google.com/go v0.38.0/go.mod h1:990N+gfupTy94rShfmMCWGDn0LpTmnzTp2qbd1dvSRU= +cloud.google.com/go v0.44.1/go.mod 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a/go/commandline/cobra/cobra.go b/go/commandline/cobra/cobra.go new file mode 100644 index 0000000..38ad777 --- /dev/null +++ b/go/commandline/cobra/cobra.go @@ -0,0 +1,39 @@ +package main + +import ( + "fmt" + + "github.com/spf13/cobra" +) + + +func main(){ + cmd := cobra.Command{ + Use: "cobra", + Short: "this is a cobra demo", + Run: func(cmd *cobra.Command, args []string){ + fmt.Println("good! you run a cobra command!") + }, + } + var newLine *bool + subCmd := cobra.Command{ + Use: "echo", + Short: "echo your input", + Run: func(cmd *cobra.Command, args []string){ + for _, arg := range args { + if newLine != nil && *newLine{ + fmt.Println(arg) + }else{ + fmt.Printf("%s ", arg) + } + } + if newLine == nil || ! *newLine{ + fmt.Println() + } + }, + } + newLine = subCmd.Flags().BoolP("newline", "n", false, "display one word per line") + + cmd.AddCommand(&subCmd) + cmd.Execute() +} \ No newline at end of file diff --git a/go/commandline/cobra/readme.md b/go/commandline/cobra/readme.md new file mode 100644 index 0000000..87eb852 --- /dev/null +++ b/go/commandline/cobra/readme.md @@ -0,0 +1,83 @@ +# cobra + +[cobra](http://github.com/spf13/cobra) 是一个强大开源的go命令行包，很多开源项目都使用cobra实现启动入口，如kubernetes。 + +# 安装 + +```bash +go get github.com/spf13/cobra +``` + +# 使用 + +使用cobra需要先创建一个`Command`对象，然后执行这个对象的`Execute`方法 + +```go +cmd := cobra.Command{Use: "cobra"} +cmd.Execute() +``` + +上面的代码没有任何功能,任何参数都不进行处理。 + +现在来扩展一下 + +```go +cmd := cobra.Command{ + Use: "cobra", + Short: "this is a cobra demo", + Run: func(cmd *cobra.Command, args []string){ + fmt.Println("good! you run a cobra command!") + }, +} +cmd.Execute() +``` + +这里为cmd赋值了两个属性`Short` 和`Run`。 `Short` 就是帮助信息的简短说明，`Run` 就是命令行命中时执行的方法。 由于现在只有一个根命令，所以执行的话会打印`good! you run a cobra command!` 添加任何命参数(`-`开头)将会显示错误及usage信息。 + +下面为cmd添加一个子命令，并处理参数`-n` + +```go +cmd := cobra.Command{ + Use: "cobra", + Short: "this is a cobra demo", + Run: func(cmd *cobra.Command, args []string){ + fmt.Println("good! you run a cobra command!") + }, +} +var newLine *bool +subCmd := cobra.Command{ + Use: "echo", + Short: "echo your input", + Run: func(cmd *cobra.Command, args []string){ + for _, arg := range args { + if newLine != nil && *newLine{ + fmt.Println(arg) + }else{ + fmt.Printf("%s ", arg) + } + } + if newLine == nil || ! *newLine{ + fmt.Println() + } + }, +} +newLine = subCmd.Flags().BoolP("newline", "n", false, "display one word per line") + +cmd.AddCommand(&subCmd) +cmd.Execute() +``` + +这是一个简单的`echo`程序， cmd 拥有一个子命令 `subCmd`, `subCmd`通过`echo`(`Use: "echo"`)调用。`newLine = subCmd.Flags().BoolP("newline", "n", false, "display one word per line")` 为`subCmd` 添加了一个可选布尔型参数`-n`或`--newline`，这个参数的默认值是`false`。`newLine` 记录这个参数的值并在`Run`回调方法中使用。 + +运行结果 + +```bash +$ go run cobra.go echo aaa bbb +aaa bbb +``` + +```bash +$ go run cobra.go echo -n aaa bbb +aaa +bbb +``` \ No newline at end of file diff --git a/go/database/mongo/readme.md b/go/database/mongo/readme.md new file mode 100644 index 0000000..e1e29e6 --- /dev/null +++ b/go/database/mongo/readme.md @@ -0,0 +1,99 @@ +# GO 操作 mongodb + +go 使用官方驱动[`go.mongodb.org/mongo-driver/mongo`](https://github.com/mongodb/mongo-go-driver)来操作mongo数据库。 + +## 安装 + +```bash +go get go.mongodb.org/mongo-driver/mongo +``` + +## 使用 + +连接 + +```go +import ( + "go.mongodb.org/mongo-driver/mongo" + "go.mongodb.org/mongo-driver/mongo/options" + "go.mongodb.org/mongo-driver/mongo/readpref" +) + +ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second) +defer cancel() +client, err := mongo.Connect(ctx, options.Client().ApplyURI("mongodb://localhost:27017")) +defer func() { + if err = client.Disconnect(ctx); err != nil { + panic(err) + } +}() +``` + +测试连接 + +```go +ctx, cancel = context.WithTimeout(context.Background(), 2*time.Second) +defer cancel() +err = client.Ping(ctx, readpref.Primary()) +``` + +获取collection + +```go +collection := client.Database("testing").Collection("numbers") +``` + +## 特殊类型 + +包 `go.mongodb.org/mongo-driver/bson/primitive` 转换一些数据到mongo类型 + +### `ISODate` + +```go +t, err := time.Parse("2006-01-02T15:04:05.999", "2021-04-21T11:30:58.883") +if err != nil { + log.Fatal(err) +} +t1 := primitive.NewDateTimeFromTime(t.Add(-8 * time.Hour)) +``` + +## 复杂查询 + +```js +db.numbers.find({ "order_source" : 1, "order_history": { $elemMatch: { "order_status": "27", "change_at": { $gte: ISODate("2021-04-21T11:30:58.883+08:00"),$lte: ISODate("2021-04-21T11:43:58.883+08:00")} } } }) +``` + +```go +t, err := time.Parse("2006-01-02T15:04:05.999+08:00", "2021-04-21T11:30:58.883+08:00") +if err != nil { + log.Fatal(err) +} +t1 := primitive.NewDateTimeFromTime(t.Add(-8 * time.Hour)) // +t, err = time.Parse("2006-01-02T15:04:05.999+08:00", "2021-04-21T11:43:58.883+08:00") +if err != nil { + log.Fatal(err) +} +t2 := primitive.NewDateTimeFromTime(t.Add(-8 * time.Hour)) // +filter := bson.M{ + "order_source" : 1, + "order_history": bson.M{ + "$elemMatch": bson.M{ + "order_status": "27", + "change_at": bson.M{ "$gte": t1,"$lte": t2}, + }, + }, +} +ctx, cancel = context.WithTimeout(context.Background(), 2*time.Second) +defer cancel() +collection.find(ctx, filter) +``` + +查询排序 + +```bash +opt := options.FindOptions{} +opt.SetSort(bson.D{{"order_no",1}}) +ctx, cancel = context.WithTimeout(context.Background(), 2*time.Second) +defer cancel() +collection.find(ctx, filter, &opt) +``` \ No newline at end of file diff --git a/go/oidc/main.go b/go/oidc/main.go new file mode 100644 index 0000000..9d6ecb7 --- /dev/null +++ b/go/oidc/main.go @@ -0,0 +1,43 @@ +package main + +import ( + "context" + "net/http" + + "github.com/coreos/go-oidc/v3/oidc" + "golang.org/x/oauth2" +) + +var oauth2Config oauth2.Config + +var ( + clientID = "demo-client" + clientSecret = "cbfd6e04-a51c-4982-a25b-7aaba4f30c81" + + redirectURL = "http://localhost:8181/demo/callback" + state = "somestate" +) + +func handleRedirect(w http.ResponseWriter, r *http.Request) { + http.Redirect(w, r, oauth2Config.AuthCodeURL(state), http.StatusFound) +} + +func main() { + provider, err := oidc.NewProvider(context.Background(), "http://localhost:8181/demo/callback") + if err != nil { + // handle error + } + + // Configure an OpenID Connect aware OAuth2 client. + oauth2Config = oauth2.Config{ + ClientID: clientID, + ClientSecret: clientSecret, + RedirectURL: redirectURL, + + // Discovery returns the OAuth2 endpoints. + Endpoint: provider.Endpoint(), + + // "openid" is a required scope for OpenID Connect flows. + Scopes: []string{oidc.ScopeOpenID, "profile", "email"}, + } +} diff --git a/go/oidc/readme.md b/go/oidc/readme.md new file mode 100644 index 0000000..e69de29 diff --git a/kubernetes/admin/create_readonly_user.md b/kubernetes/admin/create_readonly_user.md new file mode 100644 index 0000000..7b9e248 --- /dev/null +++ b/kubernetes/admin/create_readonly_user.md @@ -0,0 +1,52 @@ +# 创建一个只读用户 + +创建证书 + +```bash +mkdir temp +cd temp +USER=viewer +openssl genrsa -out ${USER}.key 2048 +openssl req -new -key ${USER}.key -out ${USER}.csr -subj "/CN=${USER}" +openssl x509 -req -in ${USER}.csr -CA /etc/kubernetes/pki/ca.crt -CAkey /etc/kubernetes/pki/ca.key -CAcreateserial -out ${USER}.crt -days 365 +``` + +创建用户 + +```bash +kubectl create clusterrolebinding kubernetes-viewer --clusterrole=view --user=${USER} +``` + +修改配置 + +```bash +cp -a ~/.kube/config ./config +vim config +``` + +config示例, 替换其中的${USER}为你的用户名，替换`client-certificate-data`和`client-key-data`为对应值 + +```yaml +apiVersion: v1 +clusters: +- cluster: + certificate-authority-data: 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 + server: https://10.0.1.43:6443 + name: kubernetes +contexts: +- context: + cluster: kubernetes + user: ${USER} + name: ${USER}@kubernetes +current-context: ${USER}@kubernetes +kind: Config +preferences: {} +users: +- name: intbee + user: + # data from result of command: cat ${USER}.crt | base64 --wrap=0 + client-certificate-data: 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 + + # data from result of command: cat ${USER}.key | base64 --wrap=0 + client-key-data: 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 +``` \ No newline at end of file diff --git a/kubernetes/cert/expired.md b/kubernetes/cert/expired.md new file mode 100644 index 0000000..924ff1d --- /dev/null +++ b/kubernetes/cert/expired.md @@ -0,0 +1,32 @@ +# kubernetes 集群证书过期处理 + +## 查看证书到期时间 + +```bash +kubeadm alpha certs check-expiration +``` + +## 修改时间使证书暂时有效 + +```bash +date -s '0000-00-00' +``` + +## 重新分发证书 + +```bash +kubeadm alpha certs renew all +``` + +## 重启服务，重载证书 + +```bash +docker ps | grep -v pause | grep -E "etcd|scheduler|controller|apiserver" | awk '{print $1}' | awk '{print "docker","restart",$1}' | bash +ntpdate pool.ntp.org +``` + +## 更新用户配置 + +```bash +cp /etc/kubernetes/admin.conf ~/.kube/config +``` \ No newline at end of file diff --git a/kubernetes/cert/readme.md b/kubernetes/cert/readme.md new file mode 100644 index 0000000..2f1262a --- /dev/null +++ b/kubernetes/cert/readme.md @@ -0,0 +1 @@ +# kuberntes 集群证书相关问题 \ No newline at end of file diff --git a/kubernetes/client-go/main.go b/kubernetes/client-go/main.go new file mode 100644 index 0000000..afd0a60 --- /dev/null +++ b/kubernetes/client-go/main.go @@ -0,0 +1,49 @@ +package main + +import ( + "context" + "log" + "os" + "path/filepath" + + appsv1 "k8s.io/api/apps/v1" + v1 "k8s.io/apimachinery/pkg/apis/meta/v1" + "k8s.io/client-go/kubernetes" + "k8s.io/client-go/tools/clientcmd" +) + +func homeDir() string { + if h := os.Getenv("HOME"); h != "" { + return h + } + return os.Getenv("USERPROFILE") // windows +} + +func connectCluster() (*kubernetes.Clientset, error) { + conf := filepath.Join(homeDir(), ".kube", "config") + config, err := clientcmd.BuildConfigFromFlags("", conf) + if err != nil { + return nil, err + } + clientset, err := kubernetes.NewForConfig(config) + return clientset, err +} + +func getDeployment(client *kubernetes.Clientset, namespace, name string) (*appsv1.Deployment, error) { + dp, err := client.AppsV1().Deployments(namespace).Get(context.Background(), name, v1.GetOptions{}) + return dp, err +} + +func main() { + client, err := connectCluster() + if err != nil { + log.Fatal(err) + } + dp, err := getDeployment(client, "server", "code-bing") + if err != nil { + log.Fatal(err) + } + for _, c := range dp.Spec.Template.Spec.Containers { + log.Println(c.Name, c.Image) + } +} diff --git a/kubernetes/client-go/readme.md b/kubernetes/client-go/readme.md new file mode 100644 index 0000000..28e98e2 --- /dev/null +++ b/kubernetes/client-go/readme.md @@ -0,0 +1,4 @@ +# 开发kubernetes管理工具 + +开发kubernetes管理工具要用到`client-go`([Github](https://github.com/kubernetes/client-go))包 + diff --git a/kubernetes/custom_resources/readme.md b/kubernetes/custom_resources/readme.md new file mode 100644 index 0000000..bf00f7b --- /dev/null +++ b/kubernetes/custom_resources/readme.md @@ -0,0 +1,427 @@ +# 定制Kubernetes资源 + +[定制资源(Custom Resource)](https://kubernetes.io/zh/docs/concepts/extend-kubernetes/api-extension/custom-resources/) 是对 Kubernetes API 的扩展，可以开发定制的资源及控制器，这些资源仍旧可以通过kubernetes api来访问。 + +可以单独开发定制资源，也可以连定制同控制器一起开发。 + +## 准备 + +开发定制资源(CRD)需要安装controller-gen、kubebuilder、kustomize这三个工具。 + +***这里所有工具都默认安装到`${HOME}/go/bin/`*** + +### controller-gen + +[controller-gen](https://github.com/kubernetes-sigs/controller-tools) 用于生成crd controller的基础代码, 省去不少工作。 + +安装 + +```bash +git clone https://github.com/kubernetes-sigs/controller-tools.git +cd controller-tools/cmd/controller-gen/ +go build -o ${HOME}/go/bin/controller-gen main.go +``` + +使用方法 + +```bash +# controller-gen crd --paths=[api code path]/... output:dir=[output dir] +controller-gen crd --paths=/git/demo/api/... output:dir=/git/demo/crd +``` + +### kubebuilder + +[kubebuilder](https://github.com/kubernetes-sigs/kubebuilder)用于生成crd基础代码。 + +安装 + +```bash +wget https://github.com/kubernetes-sigs/kubebuilder/releases/download/v3.2.0/kubebuilder_linux_amd64 -O ${HOME}/go/bin/kubebuilder +chmod +x ${HOME}/go/bin/kubebuilder + +``` +方法2 + +```bash +curl -L -o kubebuilder https://go.kubebuilder.io/dl/latest/$(go env GOOS)/$(go env GOARCH) +chmod +x kubebuilder && mv kubebuilder /usr/local/bin/ +``` + +#### 使用方法 + +kubebuilder详细使用方法参见[官方文档](https://book.kubebuilder.io/) + +创建一个项目 + +```bash +mkdir $GOPATH/src/example +cd $GOPATH/src/example +kubebuilder init --domain project.demo.io +``` + +创建一个api资源 + +```bash +kubebuilder create api --group project.demo.io --version v1 --kind Demo +``` + +***这个api资源就是project.demo.io/v1/demos*** + +### kustomize + +[kustomize](https://github.com/kubernetes-sigs/kustomize)把简明的kustomization 模板转换成kubernetes的资源配置。kustomize 可以用于crd也可以用于内置资源(参见文档[manage-kubernetes-objects](https://kubernetes.io/zh/docs/tasks/manage-kubernetes-objects/kustomization/))的管理。 + +安装 + +```bash +go get sigs.k8s.io/kustomize/kustomize/v3 +``` + +使用方法参见[官方指南](https://kubectl.docs.kubernetes.io/zh/guides) + +## 开始 + +安装好相关工具之后，就可以开始愉快的玩耍了。 + +### 初始化项目 + +```bash +PROJECT_DIR=demo # +API_DOMAIN=demo +GO_MODULE_DOMAIN=crd.io +OWNER=bing +mkdir ${PROJECT_DIR} +cd ${PROJECT_DIR} +kubebuilder init --plugins go/v3 --domain ${API_DOMAIN} --owner ${OWNER} --repo ${GO_MODULE_DOMAIN} --skip-go-version-check +``` + +- `PROJECT_DIR` 是项目目录 +- `GO_MODULE_DOMAIN` 是go mod 的名称， 也是api resource group的后缀，如果使用GOPATH则不需要配置 +- `API_DOMAIN` 是api resource的域名，也是group名的一部分 +- `OWNER` 是项目所有人 + +***最终`apiVersion:${API_DOMAIN}.${GO_MODULE_DOMAIN}`*** + +现在，`PROJECT_DIR` 目录下文件(夹)如下 + +```bash +config Dockerfile go.mod go.sum hack main.go Makefile PROJECT +``` + +- `config` 存放kustomization配置 +- `Dockerfile` 生产docker镜像的配置，这个文件包含了代码编译操作 +- `hack` 这个文件夹存放了一个名为`boilerplate.go.txt`的文件 +- `main.go` 程序入口文件,启动一个manager，负责管理crd +- `Makefile` `make`命令的配置文件 +- `PROJECT` 项目配置文件 + +#### main.go + +main.go 是manager启动的入口文件。 + +##### 处理启动参数 + +```go +flag.StringVar(&metricsAddr, "metrics-bind-address", ":8080", "The address the metric endpoint binds to.") +flag.StringVar(&probeAddr, "health-probe-bind-address", ":8081", "The address the probe endpoint binds to.") +flag.BoolVar(&enableLeaderElection, "leader-elect", false, + "Enable leader election for controller manager. "+ + "Enabling this will ensure there is only one active controller manager.") +opts := zap.Options{ + Development: true, +} +opts.BindFlags(flag.CommandLine) +flag.Parse() +``` + +##### 创建manager + +创建了一个manager `mgr` + +```go +mgr, err := ctrl.NewManager(ctrl.GetConfigOrDie(), ctrl.Options{ + Scheme: scheme, + MetricsBindAddress: metricsAddr, + Port: 9443, + HealthProbeBindAddress: probeAddr, + LeaderElection: enableLeaderElection, + LeaderElectionID: "e71592d6.demo", +}) +``` + +##### 为manager添加healthy和ready检查 + +```go +//+kubebuilder:scaffold:builder + +if err := mgr.AddHealthzCheck("healthz", healthz.Ping); err != nil { + setupLog.Error(err, "unable to set up health check") + os.Exit(1) +} +if err := mgr.AddReadyzCheck("readyz", healthz.Ping); err != nil { + setupLog.Error(err, "unable to set up ready check") + os.Exit(1) +} +``` + +***注意：注释`//+kubebuilder:scaffold:builder`也是代码的一部分。所有`//+kubebuilder:开头的注释都有他的特殊意义。*** + +##### 启动manager + +```go +if err := mgr.Start(ctrl.SetupSignalHandler()); err != nil { + setupLog.Error(err, "problem running manager") + os.Exit(1) +} +``` + +### 创建一个CRD + +```bash +kubebuilder create api --group ${API_DOMAIN} --version v1 --kind Demo +``` + +***创建时会询问是否创建resource及controller*** + +现在项目目录下多了几个文件夹 + +```bash +api bin config controllers Dockerfile go.mod go.sum hack main.go Makefile PROJECT +``` + +- `api` api resource 的代码目录，目录下是版本子目录，resource的代码文件位于版本子目录内 + +- `bin` `controller-gen` 可执行文件位于此处 + +- `controllers` controller的代码目录 + +#### main.go + +看一下main.go的新增部分 + +```go +if err = (&controllers.DemoReconciler{ + Client: mgr.GetClient(), + Log: ctrl.Log.WithName("controllers").WithName("Demo"), + Scheme: mgr.GetScheme(), +}).SetupWithManager(mgr); err != nil { + setupLog.Error(err, "unable to create controller", "controller", "Demo") + os.Exit(1) +} +``` +创建一个对应的controller对象(`DemoReconciler`), 并设置这个controller的manager为`mgr` + +#### `api/v1/demo_types.go` + +定义Demo资源规约`DemoSpec`, + +```go +type DemoSpec struct { + // INSERT ADDITIONAL SPEC FIELDS - desired state of cluster + // Important: Run "make" to regenerate code after modifying this file + + // Foo is an example field of Demo. Edit demo_types.go to remove/update + Foo string `json:"foo,omitempty"` +} +``` + +定义Demo状态 + +```go +type DemoStatus struct { + // INSERT ADDITIONAL STATUS FIELD - define observed state of cluster + // Important: Run "make" to regenerate code after modifying this file +} +``` + +注册资源 + +```go +func init() { + SchemeBuilder.Register(&Demo{}, &DemoList{}) +} +``` + +#### `api/v1/groupversion_info.go` + +api 资源组配置。 + +```go +// Package v1 contains API Schema definitions for the demo.io v1 API group +//+kubebuilder:object:generate=true +//+groupName=demo.crd.io +package v1 + +import ( + "k8s.io/apimachinery/pkg/runtime/schema" + "sigs.k8s.io/controller-runtime/pkg/scheme" +) + +var ( + // GroupVersion is group version used to register these objects + GroupVersion = schema.GroupVersion{Group: "demo.crd.io", Version: "v1"} + + // SchemeBuilder is used to add go types to the GroupVersionKind scheme + SchemeBuilder = &scheme.Builder{GroupVersion: GroupVersion} + + // AddToScheme adds the types in this group-version to the given scheme. + AddToScheme = SchemeBuilder.AddToScheme +) +``` + +***注意：注释`+groupName=demo.crd.io`不可删除，与`+kubebuilder:object:generate=true`一样，有他的特殊意义。后续还能看到用于设定的很多注释*** + +#### `api/v1/zz_generated.deepcopy.go` + +这是一个自动生成的深度复制的文件，不要随意修改此文件，除非明确知道要做什么。kubebuilder会自动配置及更新该文件。 + +#### `controllers/demo_controller.go` + +资源demo的控制器文件。 + +##### DemoReconciler + +`DemoReconciler`对象定义。一般来说，无需为其添加任何内容，除非有特别需求 + +```go + +// DemoReconciler reconciles a Demo object +type DemoReconciler struct { + client.Client + Log logr.Logger + Scheme *runtime.Scheme +} +``` +- `DemoReconciler`对象有三个成员，`client.Client` 是kubernetes client接口，提供如Get、Update、Create、Delete等方法。 + +- `Log` 统一的log处理 + +- `Scheme` 这个功能比较多，比如序列化与反序列化对象 + +##### Reconcile + +处理程序。每一次CRD的变更都会调用此方法。 + +```go + +//+kubebuilder:rbac:groups=demo.demo,resources=demoes,verbs=get;list;watch;create;update;patch;delete +//+kubebuilder:rbac:groups=demo.demo,resources=demoes/status,verbs=get;update;patch +//+kubebuilder:rbac:groups=demo.demo,resources=demoes/finalizers,verbs=update + +func (r *DemoReconciler) Reconcile(ctx context.Context, req ctrl.Request) (ctrl.Result, error) { + _ = r.Log.WithValues("demo", req.NamespacedName) + + // your logic here + + return ctrl.Result{}, nil +} +``` + +***注意：`+kubebuilder:rbac`是用于授权的注释，只有在此授权了的资源，才能够使用对应权限访问。`kustomize`会依据此配置生成`config/rbac`配置。*** + +##### SetupWithManager + +设置controller的manager，通常不需要修改这部分代码就可以正常工作，但有时需要进行改动，比如watch其他资源的时候。 + +```go +// SetupWithManager sets up the controller with the Manager. +func (r *DemoReconciler) SetupWithManager(mgr ctrl.Manager) error { + return ctrl.NewControllerManagedBy(mgr). + For(&demov1.Demo{}). + Complete(r) +} +``` + +### 为controller添加功能 + +#### 添加字段 + +首先为crd添加两个字段。一个规约字段`Bar`和一个状态字段`UpdatedAt` + +```go +type DemoSpec struct { + Foo string `json:"foo,omitempty"` + Bar string `json:"Bar,omitempty"` +} + +// DemoStatus defines the observed state of Demo +type DemoStatus struct { + UpdatedAt *metav1.Time `json:"UpdatedAt,omitempty"` +} + +``` + +#### 修改Reconcile + +```go +import apiv1 "demo.crd.io/api/v1" + +func (r *DemoReconciler) Reconcile(ctx context.Context, req ctrl.Request) (ctrl.Result, error) { + _ = r.Log.WithValues("demo", req.NamespacedName) + + // your logic here + demo := apiv1.Demo{} + err := r.Get(context.Background(), req.NamespacedName, &demo) + if err != nil { + r.Log.Error(err, "get demo resource error") + return ctrl.Result{}, nil + } + //更新操作 + if demo.ObjectMeta.DeletionTimestamp.IsZero() { + //更新 + err = r.processUpdate(&demo) + } + return ctrl.Result{}, nil +} + +//处理更新 +func (r *DemoReconciler)processUpdate(demo *apiv1.Demo)error{ + r.Log.Info("the bar of %s is %s", demo.GetName(), demo.Spec.Bar) + now := metav1.Now() + demo.Status.UpdatedAt = &now + err := r.Status().Update(context.Background(), demo) + return err +} +``` + +这里首先获取到触发此次reconcile的对象`demo`, 然后通过`demo.ObjectMeta.DeletionTimestamp.IsZero()`来判断是删除操作还是更新操作(创建对象也是更新操作)。对于更新操作，执行方法`processUpdate` + +在`processUpdate`中，先将`demo.Spec.Bar`打印到日志:`r.Log.Info("the bar of %s is %s", demo.GetName(), demo.Spec.Bar)`， 之后更新`demo.Status.UpdatedAt`字段。 + +这里使用了`r.Status().Update(context.Background(), demo)`，这需要有注释`// +kubebuilder:subresource:status` 默认已经添加了该注释，如果误删除了，需要添加上。 + +```go +//+kubebuilder:object:root=true +//+kubebuilder:subresource:status + +// Demo is the Schema for the demoes API +type Demo struct { +``` + +**注意这里注释的位置和空行。** + +### 多group + +初始化 + +```bash +PROJECT_DIR=demo # +GO_MODULE_DOMAIN=crd.io +OWNER=bing +CRD_VERSION=v1beta1 + + +echo "init crd env" +kubebuilder init --plugins go/v3 --owner ${OWNER} --repo ${GO_MODULE_DOMAIN} --skip-go-version-check +echo "open multi group..." +kubebuilder edit --multigroup +``` + +`kubebuilder edit --multigroup` 开启多组支持 + +创建CRD + +```bash +kubebuilder create api --group group1 --version ${CRD_VERSION} --kind Demo --crd-version ${CRD_VERSION} --controller --resource +kubebuilder create api --group group2 --version ${CRD_VERSION} --kind Demo --crd-version ${CRD_VERSION} --controller --resource +``` \ No newline at end of file diff --git a/kubernetes/extend/extend-node-resource.md b/kubernetes/extend/extend-node-resource.md new file mode 100644 index 0000000..64cee0c --- /dev/null +++ b/kubernetes/extend/extend-node-resource.md @@ -0,0 +1,109 @@ +# 为节点添加扩展资源 + +## 启用apiserver代理 + +启用apiserver代理，以便发送请求 + +```bash +kubectl proxy +``` + +## 添加扩展资源 + +```bash +export NODE=k8snode1 +curl --header "Content-Type: application/json-patch+json" \ + --request PATCH \ + --data '[{"op": "add", "path": "/status/capacity/bing89.com~1demo", "value": "4"}]' \ + http://localhost:8001/api/v1/nodes/${NODE}/status +``` + +输出显示该节点的当前资源容量 + +```json +"capacity": { + "bing89.com/demo": "4", + "cpu": "2", + "ephemeral-storage": "17394Mi", + "hugepages-2Mi": "0", + "memory": "4045168Ki", + "pods": "110" +} +``` + +显示节点信息 + +```bash +kubectl describe node ${NODE} +``` + +输出 + +```bash +Capacity: + bing89.com/demo: 4 + cpu: 2 + ephemeral-storage: 17394Mi + hugepages-2Mi: 0 + memory: 4045168Ki + pods: 110 +``` + +## 测试 + +创建一个申请demo资源的[pod](../apiresources/yaml/pod/demo-extend-resouce.yaml) + +```yaml +apiVersion: v1 +kind: Pod +metadata: + name: demo-extend-resource +spec: + containers: + - name: demo-extend-resource + image: registry.bing89.com/tools/demo:1.0 + ports: + - containerPort: 8080 + name: http-port + resources: + requests: + cpu: 50m + bing89.com/demo: 1 + limits: + cpu: 100m + bing89.com/demo: 1 + restartPolicy: OnFailure +``` + +```bash +kubectl -n mem-demo apply -f kubernetes/apiresources/yaml/pod/demo-extend-resouce.yaml +``` + +查看pod + +```bash +kubectl -n mem-demo get pod -o wide +``` + +现在，pod已经被分配到有资源的`${NODE}(k8snode1)` + +```bash +NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES +demo 1/1 Running 0 2d1h 172.16.98.195 k8snode3 +demo-extend-resource 1/1 Running 0 25s 172.16.249.5 k8snode1 +``` + +## 清理扩展资源 + +```bash +curl --header "Content-Type: application/json-patch+json" \ +--request PATCH \ +--data '[{"op": "remove", "path": "/status/capacity/bing89.com~1demo"}]' \ +http://localhost:8001/api/v1/nodes/${NODE}/status +``` + +验证是否已经被移除 + +```bash +kubectl describe node ${NODE} | grep demo +``` \ No newline at end of file diff --git a/kubernetes/extend/readme.md b/kubernetes/extend/readme.md new file mode 100644 index 0000000..0a1147d --- /dev/null +++ b/kubernetes/extend/readme.md @@ -0,0 +1 @@ +# kubernetes 扩展 \ No newline at end of file diff --git a/kubernetes/installation/config_run_env.md b/kubernetes/installation/config_run_env.md new file mode 100644 index 0000000..cd5df7e --- /dev/null +++ b/kubernetes/installation/config_run_env.md @@ -0,0 +1,231 @@ +# 配置运行环境 + +## 升级内核 + +由于centos内核实在太老旧，需要升级系统内核。 + +```bash +rpm --import https://www.elrepo.org/RPM-GPG-KEY-elrepo.org +rpm -Uvh http://www.elrepo.org/elrepo-release-7.0-4.el7.elrepo.noarch.rpm +yum --enablerepo=elrepo-kernel install kernel-lt -y +sed -i s/saved/0/g /etc/default/grub +grub2-set-default "$(cat /boot/efi/EFI/centos/grub.cfg |grep menuentry|grep 'menuentry '|head -n 1|awk -F "'" '{print $2}')" +#查看默认启动版本 +grub2-editenv list +grub2-mkconfig -o /boot/efi/EFI/centos/grub.cfg && reboot + +``` + +***注意：这里默认升级到最新版本的linux内核， 也可以自行指定内核版本。不升级也能够运行kubernetes*** + +## 配置selinux + +```bash +sed -i 's/SELINUX=enforcing/SELINUX=permissive/' /etc/selinux/config +setenforce 0 +``` + +***也可完全关闭selinux(`sed -i 's/SELINUX=enforcing/SELINUX=disabled/' /etc/selinux/config`)，但并不推荐。*** + +## 配置防火墙 + +为kubernetes创建一个zone + +```bash +firewall-cmd --zone=public --new-service=kubernetes --permanent +#source是源ip +firewall-cmd --zone=public --service=kubernetes --add-source=192.168.0.0/24 +``` + +kubernetes 使用下表所述端口： + +**控制节点** + +协议|方向|端口范围|作用|使用者 +--|--|--|--|-- +TCP|入站|6443*|Kubernetes API 服务器|所有组件 +TCP|入站|10250|Kubelet API|kubelet 自身、Control plane +TCP|入站|10251|kube-scheduler|kube-scheduler 自身 +TCP|入站|10252|kube-controller-manager|kube-controller-manager 自身 + +```bash +firewall-cmd --zone=public --service=kubernetes --add-port=6443/tcp --permanent +firewall-cmd --zone=public --service=kubernetes --add-port=10250/tcp --permanent +firewall-cmd --zone=public --service=kubernetes --add-port=10251/tcp --permanent +firewall-cmd --zone=public --service=kubernetes --add-port=10252/tcp --permanent +``` + +**工作节点** + +协议|方向|端口范围|作用|使用者 +--|--|--|--|-- +TCP|入站|10250|Kubelet API|kubelet 自身、控制平面组件 +TCP|入站|30000-32767|NodePort 服务**|所有组件 + +```bash +firewall-cmd --zone=public --new-service=kubernetes --permanent +#source是源ip +firewall-cmd --zone=public --service=kubernetes --add-source=192.168.0.0/24 + +firewall-cmd --zone=public --service=kubernetes --add-port=10250/tcp --permanent +``` + +**etcd节点** + +协议|方向|端口范围|作用|使用者 +--|--|--|--|-- +TCP|入站|2379-2380|etcd server client API|kube-apiserver, etcd + +```bash +firewall-cmd --zone=public --new-service=kubernetes --permanent +#source是源ip +firewall-cmd --zone=public --service=kubernetes --add-source=192.168.0.0/24 + +firewall-cmd --zone=public --service=kubernetes --add-port=2379/tcp --permanent +firewall-cmd --zone=public --service=kubernetes --add-port=2380/tcp --permanent +``` + +**添加service到zone** + +```bash +firewall-cmd --zone=public --add-service=kubernetes --permanent +``` + +**重新加载配置** + +***确保每一步操作都加了参数`--permanent`持久化配置*** + +```bash +firewall-cmd --reload +``` + +**查看防火墙配置** + +```bash +firewall-cmd --zone=kubernetes --list-all +``` + +应该可以看到输出 + +```bash +kubernetes (active) + target: default + icmp-block-inversion: no + interfaces: enp4s0 + sources: 192.168.0.0/24 10.244.0.0/16 + services: + ports: 6443/tcp 10250/tcp 10251/tcp 10252/tcp + protocols: + masquerade: no + forward-ports: + source-ports: + icmp-blocks: + rich rules: +``` + +***也可完全关闭防火墙(`systemctl disable --now firewalld`)，但并不推荐*** + +## 关闭swap + +```bash +swapoff -a && sysctl -w vm.swappiness=0 +#/etc/fstab中swap相关的需要删除，否则会导致重启时kubelet启动失败 +sed -i 's|\(^/dev/mapper/.*-swap.*\)|#\1|' /etc/fstab +``` + +## 配置系统参数 + +配置完成后需要重启 + +```bash +cat < /etc/sysctl.d/k8s.conf +net.bridge.bridge-nf-call-ip6tables=1 +net.bridge.bridge-nf-call-iptables=1 +vm.swappiness=0 +net.ipv4.ip_forward=1 +EOF +sysctl --system +#添加，rockylinux8.5 + k8s1.22.4 +echo 1 > /proc/sys/net/bridge/bridge-nf-call-iptables +``` + +## 配置hosts + +```bash +cat <>/etc/hosts +#私有仓库地址 +192.168.0.248 registry.bing89.com +#kubernetes cluster nodes +192.168.0.201 k8smaster1 +192.168.0.202 k8smaster2 +192.168.0.203 k8smaster3 +192.168.0.211 k8snode1 +192.168.0.212 k8snode2 +192.168.0.213 k8snode3 +192.168.0.221 etcd1 +192.168.0.222 etcd2 +192.168.0.223 etcd3 +EOF +``` + +## 配置ssh免密登录 + +***若不进行此配置，可能需要频繁输入密码*** + +```bash +HOSTS=(k8smaster1 k8smaster2 k8smaster3 k8snode1 k8snode2 k8snode3) +ssh-keygen +for host in ${HOSTS[@]};do ssh-copyid ${host}; done +``` + +## 安装tc + +***不安装可能会出现`[WARNING FileExisting-tc]: tc not found in system path`*** + +```bash +yum install iproute-tc +``` + +## 配置ipvs内核模块 + +***如果不安装高可用集群，可以不配置*** + +```bash +cat >>/etc/profile< /etc/yum.repos.d/kubernetes.repo +[kubernetes] +name=Kubernetes +baseurl=https://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el7-x86_64 +enabled=1 +gpgcheck=1 +repo_gpgcheck=1 +gpgkey=https://mirrors.aliyun.com/kubernetes/yum/doc/yum-key.gpg https://mirrors.aliyun.com/kubernetes/yum/doc/rpm-package-key.gpg +EOF +yum install -y kubelet kubeadm kubectl +``` \ No newline at end of file diff --git a/kubernetes/installation/containerd.md b/kubernetes/installation/containerd.md new file mode 100644 index 0000000..2a17c2b --- /dev/null +++ b/kubernetes/installation/containerd.md @@ -0,0 +1,133 @@ +# Containerd 安装配置与管理 + +使用[containerd](https://github.com/containerd/cri)的内置CRI插件作为kubernetes CRI + +***注意：本文档仅在1.4.x版本上测试通过*** + +## 安装 + +```bash +#使用aliyun的docker-ce镜像源，方便快速安装最新版containerd +yum install -y yum-utils device-mapper-persistent-data lvm2 wget +wget -O /etc/yum.repos.d/docker-ce.repo https://download.docker.com/linux/centos/docker-ce.repo +sed -i 's+download.docker.com+mirrors.tuna.tsinghua.edu.cn/docker-ce+' /etc/yum.repos.d/docker-ce.repo +yum makecache fast +yum install -y containerd.io +``` + + +## 配置 + +containerd 的配置文件位于`/etc/containerd/config.toml`，若系统种还没有这个文件，执行以下命令生成 + +```bash +sudo mkdir -p /etc/containerd +containerd config default | sudo tee /etc/containerd/config.toml +``` + +### 配置 cri + +1. cgroup driver 为systemd + +2. sandbox image为私有仓库镜像 + +3. 私有镜像仓库不验证证书 + +```bash +[plugins] + [plugins."io.containerd.grpc.v1.cri"] + sandbox_image = "registry.bing89.com/kubernetes/pause:3.2" + #systemd_cgroup = true 似乎不起作用 + [plugins."io.containerd.grpc.v1.cri".containerd] + [plugins."io.containerd.grpc.v1.cri".containerd.runtimes] + [plugins."io.containerd.grpc.v1.cri".containerd.runtimes.runc] + [plugins."io.containerd.grpc.v1.cri".containerd.runtimes.runc.options] + SystemdCgroup = true +``` +```bash +[plugins] + [plugins."io.containerd.grpc.v1.cri"] + [plugins."io.containerd.grpc.v1.cri".registry] + [plugins."io.containerd.grpc.v1.cri".registry.mirrors] + [plugins."io.containerd.grpc.v1.cri".registry.mirrors."docker.io"] + endpoint = ["https://pqbap4ya.mirror.aliyuncs.com"] + [plugins."io.containerd.grpc.v1.cri".registry.mirrors."registry.bing89.com"] + endpoint = ["https://registry.bing89.com"] + [plugins."io.containerd.grpc.v1.cri".registry.configs] + [plugins."io.containerd.grpc.v1.cri".registry.configs."registry.bing89.com".tls] + insecure_skip_verify = true + [plugins."io.containerd.grpc.v1.cri".registry.configs."registry.bing89.com".auth] + username = "xxxx" + password = "xxxx" +``` +### 配置cni + +创建网桥 + +```bash +cat </etc/sysconfig/network-scripts/ifcfg-brcontainerd0 +TYPE="Bridge" +UUID="ba72d9bd-9be9-4a87-a587-ee9e070052d2" +DEVICE="brcontainer0" +ONBOOT="yes" +BOOTPROTO="none" +EOF +#重启network +systemctl restart network +#used in rockylinux 8.5 +nmcli connection reload +``` + +添加cni网络配置 + +```bash +mkdir /etc/cni/net.d -p +cat </etc/cni/net.d/172-my.conf +{ + "cniVersion": "0.2.0", + "name": "mynet", + "type": "bridge", + "bridge": "brcontainer0", + "isGateway": true, + "ipMasq": true, + "ipam": { + "type": "host-local", + "subnet": "172.17.0.0/16", + "routes": [ + { "dst": "0.0.0.0/0" } + ], + "dataDir": "/run/ipam-state" + }, + "dns": { + "nameservers": [ "223.5.5.5", "223.6.6.6", "114.114.114.114" ] + } +} +EOF +``` +### 应用配置 + +重启containerd使配置生效 + +```bash +systemctl daemon-reload && systemctl restart containerd +``` + +### 配置critrl + +crictl是containerd的管理工具，类似于docker-client + +```bash +cat </etc/crictl.yaml +runtime-endpoint: unix:///run/containerd/containerd.sock +image-endpoint: unix:///run/containerd/containerd.sock +timeout: 10 +debug: false +EOF +``` + +## 使用ctr运行一个容器 + +```bash +ctr run --mount type=bind,src=/etc/nginx/nginx.conf,dst=/etc/nginx/nginx.conf,options=rbind:ro --mount type=bind,src=/etc/nginx/conf.d,dst=/etc/nginx/conf.d,options=rbind:ro --memory-limit 1024000000 --net-host -d docker.io/library/nginx:1.9 nginx + +``` \ No newline at end of file diff --git a/kubernetes/installation/crictl.md b/kubernetes/installation/crictl.md new file mode 100644 index 0000000..82bcaba --- /dev/null +++ b/kubernetes/installation/crictl.md @@ -0,0 +1,155 @@ +# crictl +crictl 是一个开源的container runtime 管理工具。 + +## 安装crictl + +crictl是kubeadmin的依赖包，安装kubeadm会自动安装cri-tools包 + +也可以安装指定版本 + +```bash +VERSION="v1.20.0" +wget https://github.com/kubernetes-sigs/cri-tools/releases/download/$VERSION/crictl-$VERSION-linux-amd64.tar.gz +sudo tar zxvf crictl-$VERSION-linux-amd64.tar.gz -C /usr/local/bin +rm -f crictl-$VERSION-linux-amd64.tar.gz +``` + +***21-12-09更新，crictl 工具 1.19版(k8s1.23)已经无法兼容containerd 1.4，Redhat8库里面的是1.4无法正常使用，需要安装1.5版本*** + +## 配置crictl + +配置文件位于`/etc/crictl.yaml` + +docker + +```bash +runtime-endpoint: unix:///var/run/dockershim.sock +image-endpoint: unix:///var/run/dockershim.sock +timeout: 2 +debug: true +pull-image-on-create: false +``` + +containerd + +```bash +cat </etc/crictl.yaml +runtime-endpoint: unix:///run/containerd/containerd.sock +image-endpoint: unix:///run/containerd/containerd.sock +timeout: 10 +debug: false +EOF +``` + +## 创建pod + +编写pod配置,需要两个json文件或两个yaml文件 + +pod.json + +```json +{ + "metadata": { + "name": "nginx-sandbox", + "namespace": "default", + "attempt": 1, + "uid": "hdishd83djaidwnduwk28bcsb" + }, + "log_directory": "/tmp", + "linux": { + } +} +``` + +container.json + +```json +{ + "metadata": { + "name": "busybox" + }, + "image":{ + "image": "busybox" + }, + "command": [ + "top" + ], + "log_path":"busybox.0.log", + "linux": { + } +} +``` +pod.yaml + +```yaml +metadata: + attempt: 1 + name: busybox-sandbox + namespace: default + uid: hdishd83djaidwnduwk28bcsb +log_directory: /tmp +linux: + namespaces: + options: {} +``` + +container.yaml + +```yaml +metadata: + name: busybox +image: + image: busybox:latest +command: +- top +log_path: busybox.0.log +``` + +执行命令 + +```bash +crictl runp container.json pod.json +#crictl runp container.yaml pod.yaml +``` + +## nginx + +container.yaml + +```yaml +metadata: + name: nginx +image: + image: nginx:1.19 +log_path: nginx.0.log +mounts: +- container_path: /etc/nginx/nginx.conf + host_path: /etc/nginx/nginx.conf + readonly: true +- container_path: /etc/nginx/conf.d + host_path: /etc/nginx/conf.d + readonly: true +linux: + namespaces: + options: {} +``` + +pod.yaml + +```yaml +metadata: + attempt: 1 + name: nginx-pod + namespace: default +log_directory: /tmp/nginx +linux: + namespaces: + options: {} +port_mappings: +- host_port: 80 + container_port: 80 + host_ip: 0.0.0.0 +- host_port: 443 + container_port: 443 + host_ip: 0.0.0.0 +``` \ No newline at end of file diff --git a/kubernetes/installation/install_cluster_with_outside_etcd.md b/kubernetes/installation/install_cluster_with_outside_etcd.md new file mode 100644 index 0000000..c4406cd --- /dev/null +++ b/kubernetes/installation/install_cluster_with_outside_etcd.md @@ -0,0 +1,141 @@ +# 使用kubeadm安装基于外部etcd集群的kubernetes + +安装之前，请确认已经按要求准备好正确数量的节点(最低6个，推荐9个)并已经根据[配置运行环境](config_run_env.md)完成了环境配置。 + +**注意：本文档所有安装操作均在第一个controllplane节点完成** + +## 使用kubeadm安装配置外部etcd集群 + +### 创建配置 + +参照[kubeadm 配置示例](kubeadm_config_example.md)创建与准备好的节点符合的配置，每个节点都有各自的配置。配置创建好之后放置于`/tmp/${HOST_IP}`目录下 + +### 创建证书 + +需要为每个节点创建证书。 + +重置当前节点，避免有未清理干净的以前安装的集群 + +```bash +kubeadm reset -f +``` + +生成证书颁发机构 + +```bash +kubeadm init phase certs etcd-ca +``` + +为每个节点创建证书 + +```bash +ETCD_HOSTS=(192.168.0.211 192.168.0.212 192.168.0.213) +for HOST in ${ETCD_HOSTS[@]}; +do +kubeadm init phase certs etcd-server --config=/tmp/${HOST}/etcdcfg.yaml +kubeadm init phase certs etcd-peer --config=/tmp/${HOST}/etcdcfg.yaml +kubeadm init phase certs etcd-healthcheck-client --config=/tmp/${HOST}/etcdcfg.yaml +kubeadm init phase certs apiserver-etcd-client --config=/tmp/${HOST}/etcdcfg.yaml +cp -R /etc/kubernetes/pki /tmp/${HOST}/ +# 清理不可重复使用的证书 +find /etc/kubernetes/pki -not -name ca.crt -not -name ca.key -type f -delete +# 清理不应从此主机复制的证书 +find /tmp/${HOST} -name ca.key -type f -delete +done +``` + +### 初始化etcd + +```bash +scp -r /tmp/kubelet.service.d ${HOST}:/etc/systemd/system/ +scp -r /tmp/${HOST}/* ${HOST}:/tmp +ssh ${HOST} "systemctl daemon-reload" +ssh ${HOST} "kubeadm reset -f && rsync -ivhPr /tmp/pki /etc/kubernetes/" +ssh ${HOST} "systemctl restart kubelet && kubeadm init phase etcd local --config=/tmp/etcdcfg.yaml" +``` + +### 验证安装 + +```bash +docker run --rm -it --net host -v /etc/kubernetes:/etc/kubernetes registry.bing89.com/kubernetes/etcd:3.4.13-0 etcdctl --cert /etc/kubernetes/pki/etcd/peer.crt --key /etc/kubernetes/pki/etcd/peer.key --cacert /etc/kubernetes/pki/etcd/ca.crt --endpoints https://192.168.0.211:2379 endpoint health --cluster +``` + +***如果没有安装docker，可能需要创建pod的json配置，并使用crictl(参考[Containerd 安装配置与管理](containerd.md))来验证*** + +## 安装配置haproxy + +kubernetes可以使用keepalived、haproxy、kube-vip来实现apiserver的高可用，这里使用haproxy。 + +参考[haproxy安装与配置](install_haproxy.md)完成haproxy的配置。 + +## 初始化第一个ControlPlane节点 + +### 创建controlplane节点配置 + +参照[kubeadm 配置示例](kubeadm_config_example.md)创建与准备好的节点符合的配置，只需要一份配置。 + +### 备份并重置节点 + +```bash +if [ -f /etc/kubernetes/manifests/haproxy.yaml ];then + cp /etc/kubernetes/manifests/haproxy.yaml /tmp/haproxy.yaml.backup +fi +if [ -f /etc/kubernetes/pki/ca.crt ];then + cp /etc/kubernetes/pki/ca.crt /tmp/ca.crt.backup +fi +if [ -f /etc/kubernetes/pki/ca.key ];then + cp /etc/kubernetes/pki/ca.key /tmp/ca.key.backup +fi +kubeadm reset -f +``` + +### 复制etcd证书 + +```bash +ETCD_HOST1=192.168.0.211 +if [ ! -d /etc/kubernetes/pki/etcd] + mkdir /etc/kubernetes/pki/etcd +fi +scp /tmp/${ETCD_HOST1}/pki/etcd/ca.crt /etc/kubernetes/pki/etcd/ca.crt +scp /tmp/${ETCD_HOST1}/pki/apiserver-etcd-client.crt /etc/kubernetes/pki/apiserver-etcd-client.crt +scp /tmp/${ETCD_HOST1}/pki/apiserver-etcd-client.key /etc/kubernetes/pki/apiserver-etcd-client.key +scp /tmp/ca.key /etc/kubernetes/pki/ca.key +scp /tmp/ca.crt /etc/kubernetes/pki/ca.crt +``` + +### 初始化controlplane + +```bash +kubeadm init --config /tmp/kubeadmcfg.yaml --upload-certs +``` + +### 还原haproxy 并重启kubelet + +```bash +if [ -f /tmp/haproxy.yaml.backup ];then + cp /tmp/haproxy.yaml.backup /etc/kubernetes/manifests/haproxy.yaml + systemctl restart kubelet +fi +``` + +## 加入其他controlplane节点 + +备份并重置节点 + +```bash +if [ -f /etc/kubernetes/manifests/haproxy.yaml ];then + cp /etc/kubernetes/manifests/haproxy.yaml /tmp/haproxy.yaml.backup +fi +kubeadm reset -f +``` + +使用kubeadm join... 指令加入集群 + +还原haproxy 并重启kubelet + +``` +if [ -f /tmp/haproxy.yaml.backup ];then + cp /tmp/haproxy.yaml.backup /etc/kubernetes/manifests/haproxy.yaml + systemctl restart kubelet +fi +``` \ No newline at end of file diff --git a/kubernetes/installation/install_cluster_with_stacked_etcd.md b/kubernetes/installation/install_cluster_with_stacked_etcd.md new file mode 100644 index 0000000..9d1f5e0 --- /dev/null +++ b/kubernetes/installation/install_cluster_with_stacked_etcd.md @@ -0,0 +1,62 @@ +# 使用kubeadm安装基于堆叠etcd的kubernetes + +安装之前，请确认已经按要求准备好正确数量的节点(最低3个，推荐6个)并已经根据[配置运行环境](config_run_env.md)完成了环境配置。 + +## 安装配置haproxy + +kubernetes可以使用keepalived、haproxy、kube-vip来实现apiserver的高可用，这里使用haproxy。 + +参考[haproxy安装与配置](install_haproxy.md)完成haproxy的配置。 + +## 创建配置 + +参照[kubeadm 配置示例](kubeadm_config_example.md)创建与准备好的节点符合的配置，每个节点都有各自的配置。配置创建好之后放置于`/tmp/${HOST_IP}`目录下 + +## 初始化第一个controlplane + +备份并重置节点 + +```bash +if [ -f /etc/kubernetes/manifests/haproxy.yaml ];then + cp /etc/kubernetes/manifests/haproxy.yaml /tmp/haproxy.yaml.backup +fi +kubeadm reset -f +``` + +初始化controlplane + +```bash +kubeadm init --config /tmp/kubeadmcfg.yaml +``` + +还原haproxy 并重启kubelet + +```bash +if [ -f /tmp/haproxy.yaml.backup ];then + cp /tmp/haproxy.yaml.backup /etc/kubernetes/manifests/haproxy.yaml + systemctl restart kubelet +fi +``` + +## 初始化其他节点 + +备份并重置节点 + +```bash +if [ -f /etc/kubernetes/manifests/haproxy.yaml ];then + cp /etc/kubernetes/manifests/haproxy.yaml /tmp/haproxy.yaml.backup +fi +kubeadm reset -f +``` + +使用kubeadm join... 指令加入集群 + +还原haproxy 并重启kubelet + +```bash +if [ -f /tmp/haproxy.yaml.backup ];then + cp /tmp/haproxy.yaml.backup /etc/kubernetes/manifests/haproxy.yaml + systemctl restart kubelet +fi +``` + diff --git a/kubernetes/installation/install_haproxy.md b/kubernetes/installation/install_haproxy.md new file mode 100644 index 0000000..42538c7 --- /dev/null +++ b/kubernetes/installation/install_haproxy.md @@ -0,0 +1,134 @@ +# haproxy安装与配置 + +安装之前，请确认已经按要求准备好正确数量的节点并已经根据[配置运行环境](config_run_env.md)完成了环境配置。 + +**若无特别说明，本文档所述操作，均在第一个controlplane节点上执行。** + +## 安装软件 + +```bash +export HA_HOSTS=(192.168.0.201 192.168.0.202 192.168.0.203) +export VIP=192.168.0.200 +export HAPASSWORD="hapassword2020" +export HOST_PREFIX="k8smaster" +for HOST in ${HA_HOSTS[@]} +do +ssh ${HOST} "yum install corosync pacemaker pcs fence-agents resource-agents -y && systemctl enable --now pcsd" +done +``` + +## 创建VIP + +```bash +for HOST in ${HA_HOSTS[@]} +do + ssh ${HOST} "echo ${HAPASSWORD} | passwd --stdin hacluster && pcs cluster auth -u hacluster -p ${HAPASSWORD} ${HA_HOSTS}" + ssh ${HOST} "pcs cluster setup --start --name k8s_cluster ${HA_HOSTS}" + ssh ${HOST} "pcs cluster enable --all && pcs cluster start --all && pcs cluster status && pcs status corosync" + ssh ${HOST} "pcs property set stonith-enabled=false && pcs property set no-quorum-policy=ignore && crm_verify -L -V" +done +ssh ${HA_HOSTS[0]} "pcs resource create vip ocf:heartbeat:IPaddr2 ip=${VIP} cidr_netmask=28 op monitor interval=28s" +``` + +## 创建haproxy配置 + +```bash +#haproxy 配置 +cat </tmp/haproxy.cfg +# /etc/haproxy/haproxy.cfg +#--------------------------------------------------------------------- +# Global settings +#--------------------------------------------------------------------- +global + log /dev/log local0 + log /dev/log local1 notice + daemon + +#--------------------------------------------------------------------- +# common defaults that all the 'listen' and 'backend' sections will +# use if not designated in their block +#--------------------------------------------------------------------- +defaults + mode http + log global + option httplog + option dontlognull + option http-server-close + option forwardfor except 127.0.0.0/8 + option redispatch + retries 1 + timeout http-request 10s + timeout queue 20s + timeout connect 5s + timeout client 20s + timeout server 20s + timeout http-keep-alive 10s + timeout check 10s + +#--------------------------------------------------------------------- +# apiserver frontend which proxys to the masters +#--------------------------------------------------------------------- +frontend apiserver + bind *:8443 + mode tcp + option tcplog + default_backend apiserver + +#--------------------------------------------------------------------- +# round robin balancing for apiserver +#--------------------------------------------------------------------- +backend apiserver + option httpchk GET /healthz + http-check expect status 200 + mode tcp + option ssl-hello-chk + balance roundrobin +EOF +INDEX=0 +for HOST in ${HA_HOSTS[@]} +do + echo " server ${HOST} ${HOST_PREFIX}${INDEX}:6443 weight 1 maxconn 1000 check inter 2000 rise 2 fall 3\n" >> /tmp/haproxy.cfg + INDEX=$(expr ${INDEX} + 1) +done +#haproxy pod配置 +cat </tmp/haproxy.yaml +apiVersion: v1 +kind: Pod +metadata: + name: haproxy + namespace: kube-system +spec: + containers: + - image: registry.bing89.com/dockerhub/haproxy:lts-alpine + name: haproxy + livenessProbe: + failureThreshold: 8 + httpGet: + host: localhost + path: /healthz + port: 8443 + scheme: HTTPS + volumeMounts: + - mountPath: /usr/local/etc/haproxy/haproxy.cfg + name: haproxyconf + readOnly: true + hostNetwork: true + volumes: + - hostPath: + path: /etc/haproxy/haproxy.cfg + type: FileOrCreate + name: haproxyconf +EOF +``` + +## 配置并启动haproxy + +```bash + for HOST in ${HA_HOSTS[@]} + do + ssh ${HOST} "if [ ! -d /etc/haproxy ];then mkdir /etc/haproxy; fi" + scp /tmp/haproxy.cfg ${HOST}:/etc/haproxy/haproxy.cfg + scp /tmp/haproxy.yaml ${HOST}:/etc/kubernetes/manifests/haproxy.yaml + ssh ${HOST} "systemctl restart kubelet" + done +``` \ No newline at end of file diff --git a/kubernetes/installation/kubeadm_config_example.md b/kubernetes/installation/kubeadm_config_example.md new file mode 100644 index 0000000..fd33d84 --- /dev/null +++ b/kubernetes/installation/kubeadm_config_example.md @@ -0,0 +1,101 @@ +# kubeadm 配置示例 + +## 单ControlPlane节点 + +```yaml +# 配置kubelet使用systemd作为cgroups驱动 +apiVersion: kubelet.config.k8s.io/v1beta1 +kind: KubeletConfiguration +cgroupDriver: systemd +--- +apiVersion: kubeadm.k8s.io/v1beta2 +kind: ClusterConfiguration +kubernetesVersion: stable +controlPlaneEndpoint: "192.168.0.200:8443" +imageRepository: registry.bing89.com/kubernetes +networking: + podSubnet: 10.244.0.0/16 +``` + +## 基于堆叠etcd的cluster + +```yaml +# 配置kubelet使用systemd作为cgroups驱动 +apiVersion: kubelet.config.k8s.io/v1beta1 +kind: KubeletConfiguration +cgroupDriver: systemd +--- +apiVersion: kubeadm.k8s.io/v1beta2 +kind: ClusterConfiguration +kubernetesVersion: stable +imageRepository: registry.bing89.com/kubernetes +controlPlaneEndpoint: 192.168.0.200:8443 +apiServer: + certSANs: + - "k8smaster1" + - "k8smaster2" + - "k8smaster3" + - "192.168.0.200" + - "192.168.0.201" + - "192.168.0.202" + - "192.168.0.203" +networking: + podSubnet: 10.244.0.0/16 + +--- +#配置kubeproxy使用ipvs。似乎不配置也行 +apiVersion: kubeproxy.config.k8s.io/v1alpha1 +kind: KubeProxyConfiguration +mode: ipvs +EOF +``` + +## 基于外部etcd集群的cluster + +```yaml +# 配置kubelet使用systemd作为cgroups驱动 +apiVersion: kubelet.config.k8s.io/v1beta1 +kind: KubeletConfiguration +cgroupDriver: systemd +--- +apiVersion: kubeadm.k8s.io/v1beta2 +kind: ClusterConfiguration +kubernetesVersion: stable +controlPlaneEndpoint: "192.168.0.200:8443" +imageRepository: registry.bing89.com/kubernetes +etcd: + external: + endpoints: ["https://192.168.0.211:2379","https://192.168.0.212:2379","https://192.168.0.213:2379"] + caFile: /etc/kubernetes/pki/etcd/ca.crt + certFile: /etc/kubernetes/pki/apiserver-etcd-client.crt + keyFile: /etc/kubernetes/pki/apiserver-etcd-client.key +apiServer: + certSANs: ["192.168.0.201","192.168.0.202","192.168.0.203"] +``` + +## 外部etcd集群配置 + +```yaml +# 配置kubelet使用systemd作为cgroups驱动 +apiVersion: kubelet.config.k8s.io/v1beta1 +kind: KubeletConfiguration +cgroupDriver: systemd +--- +apiVersion: "kubeadm.k8s.io/v1beta2" +kind: ClusterConfiguration +imageRepository: registry.bing89.com/kubernetes +etcd: + local: + serverCertSANs: + - "192.168.0.211" + peerCertSANs: + - "192.168.0.211" + extraArgs: + initial-cluster: infra0=https://192.168.0.211:2380,infra1=https://192.168.0.212:2380,infra2=https://192.168.0.213:2380 + initial-cluster-state: new + name: infra0 + listen-peer-urls: https://192.168.0.211:2380 + listen-client-urls: https://192.168.0.211:2379 + advertise-client-urls: https://192.168.0.211:2379 + initial-advertise-peer-urls: https://192.168.0.211:2380 +``` \ No newline at end of file diff --git a/kubernetes/installation/metrics.md b/kubernetes/installation/metrics.md new file mode 100644 index 0000000..d70d6d2 --- /dev/null +++ b/kubernetes/installation/metrics.md @@ -0,0 +1,19 @@ +# 安装metrics server + +```bash +kubectl apply -f https://github.com/kubernetes-sigs/metrics-server/releases/latest/download/components.yaml +``` + +如果出现错误`unable to fully scrape metrics from node` 或 `x509: cannot validate certificate for 10.0.1.41 because it doesn't contain any IP SANs`, 在配置文件中添加启动参数`--kubelet-insecure-tls` + +```yaml +spec: + containers: + - args: + - --cert-dir=/tmp + - --secure-port=4443 + - --kubelet-preferred-address-types=InternalIP,ExternalIP,Hostname + - --kubelet-use-node-status-port + - --kubelet-insecure-tls #这里是新增的 + image: registry.bing89.com/kubernetes/metrics-server:v0.4.1 +``` diff --git a/kubernetes/installation/promethues.md b/kubernetes/installation/promethues.md new file mode 100644 index 0000000..1b36ccd --- /dev/null +++ b/kubernetes/installation/promethues.md @@ -0,0 +1,13 @@ +# 安装Prometheus监控 + +使用项目 ：[kube-prometheus](https://github.com/prometheus-operator/kube-prometheus.git) + +选择版本可用的release版本。 + +执行命令 + +```bash +kubectl create -f manifests/setup +until kubectl get servicemonitors --all-namespaces ; do date; sleep 1; echo ""; done +kubectl create -f manifests/ +``` diff --git a/kubernetes/installation/readme.md b/kubernetes/installation/readme.md new file mode 100644 index 0000000..d84a47c --- /dev/null +++ b/kubernetes/installation/readme.md @@ -0,0 +1,44 @@ +# 安装kubernetes集群 + +本文档使用centos7.2009作为基础操作系统，使用kubeadm为安装工具。可以使用本文档逐步操作安装kubernetes集群，也可使用自动化安装脚本[install.sh](scripts/readme.md)来快速安装。 + +安装不同配置的集群需要不同的节点数，每节点CPU核心不低于2，内存不少于2GB，至多需要9个节点。 + +本文档使用192.168.0.0/24 为节点网络。 + +## 环境配置 + +使用[配置运行环境](config_run_env.md)文档来配置运行环境，建议所有节点使用完全一致的配置。 + +## 创建kubeadm配置 + +参照[kubeadm配置示例](kubeadm_config_example.md)创建正确的集群配置。 + +## 初始化集群 + +### 初始化单controlplane节点集群 + +```bash +kubeadm init --config /etc/kubernetes/kubeadmcfg.yaml +``` +如果只为集群准备了一个节点，需要取消节点的污点标记，用于调度pod。 + +```bash +kubectl taint nodes --all node-role.kubernetes.io/master- +``` + +### 初始化基于堆叠etcd的集群 + +参照[使用kubeadm安装基于堆叠etcd的kubernetes](install_cluster_with_stacked_etcd.md) + +### 初始化基于外部etcd集群的集群 + +参照[使用kubeadm安装基于外部etcd集群的kubernetes](install_cluster_with_outside_etcd.md) + +## 安装网络 + +### 安装calico + +```bash +kubectl apply -f https://docs.projectcalico.org/manifests/calico.yaml +``` \ No newline at end of file diff --git a/kubernetes/installation/scripts/install.sh b/kubernetes/installation/scripts/install.sh new file mode 100755 index 0000000..e9fadc5 --- /dev/null +++ b/kubernetes/installation/scripts/install.sh @@ -0,0 +1,366 @@ +#!/bin/bash + +## +HAPASSWORD="4orLcyKqDFWrmGlQ" + +init_etcd(){ + echo "init etcd cluster: $@" + echo "create config files..." + kubeadm reset -f + if [ ! -d /tmp/kubelet.service.d ];then + mkdir /tmp/kubelet.service.d + fi + cat << EOF > /tmp/kubelet.service.d/20-etcd-service-manager.conf +[Service] +ExecStart= +# Replace "systemd" with the cgroup driver of your container runtime. The default value in the kubelet is "cgroupfs". +ExecStart=/usr/bin/kubelet --container-runtime=remote --container-runtime-endpoint=unix:///run/containerd/containerd.sock --address=127.0.0.1 --pod-manifest-path=/etc/kubernetes/manifests --pod-infra-container-image=registry.bing89.com/kubernetes/pause:3.2 +Restart=always +EOF + if [[ -f etc/kubernetes/pki/etcd/ca.crt ]] && [[ -f etc/kubernetes/pki/etcd/ca.key ]];then + echo 'using exists key.' + else + if [[ -f etc/kubernetes/pki/etcd/ca.crt ]] || [[ -f etc/kubernetes/pki/etcd/ca.key ]]; then + echo 'ssl key config error, maybe there one key is exists. exit ' + exit 2 + fi + echo 'init kubernetes ssh keys' + kubeadm init phase certs etcd-ca + fi + NAME_PREFIX="infra" + INDEX=0 + INIT_CLUSTERS="" + for ETCD_HOST in $@; do + if [ "x${INIT_CLUSTERS}" == "x" ]; then + INIT_CLUSTERS="${NAME_PREFIX}${INDEX}=https://${ETCD_HOST}:2380" + else + INIT_CLUSTERS="${INIT_CLUSTERS},${NAME_PREFIX}${INDEX}=https://${ETCD_HOST}:2380" + fi + INDEX=$(expr ${INDEX} + 1) + done + echo "init_clusters: ${INIT_CLUSTERS}" + INDEX=0 + for HOST in ${@}; + do + if [ ! -d /tmp/${HOST} ];then + mkdir /tmp/${HOST} + else + rm -rf /tmp/${HOST}/* + fi + cat </tmp/${HOST}/etcdcfg.yaml +apiVersion: kubelet.config.k8s.io/v1beta1 +kind: KubeletConfiguration +cgroupDriver: systemd +--- +apiVersion: "kubeadm.k8s.io/v1beta2" +kind: ClusterConfiguration +imageRepository: registry.bing89.com/kubernetes +etcd: + local: + serverCertSANs: + - "${HOST}" + peerCertSANs: + - "${HOST}" + extraArgs: + initial-cluster: ${INIT_CLUSTERS} + initial-cluster-state: new + name: ${NAME_PREFIX}${INDEX} + listen-peer-urls: https://${HOST}:2380 + listen-client-urls: https://${HOST}:2379 + advertise-client-urls: https://${HOST}:2379 + initial-advertise-peer-urls: https://${HOST}:2380 +EOF + + kubeadm init phase certs etcd-server --config=/tmp/${HOST}/etcdcfg.yaml + kubeadm init phase certs etcd-peer --config=/tmp/${HOST}/etcdcfg.yaml + kubeadm init phase certs etcd-healthcheck-client --config=/tmp/${HOST}/etcdcfg.yaml + kubeadm init phase certs apiserver-etcd-client --config=/tmp/${HOST}/etcdcfg.yaml + cp -R /etc/kubernetes/pki /tmp/${HOST}/ + # 清理不可重复使用的证书 + find /etc/kubernetes/pki -not -name ca.crt -not -name ca.key -type f -delete + # 清理不应从此主机复制的证书 + if [ "x${INDEX}" != "x0" ];then + find /tmp/${HOST} -name ca.key -type f -delete + fi + INDEX=$(expr ${INDEX} + 1) + done + echo "configure etcd hosts" + for HOST in ${@}; + do + scp -r /tmp/kubelet.service.d ${HOST}:/etc/systemd/system/ + scp -r /tmp/${HOST}/* ${HOST}:/tmp + ssh ${HOST} "systemctl daemon-reload" + ssh ${HOST} "kubeadm reset -f && rsync -ivhPr /tmp/pki /etc/kubernetes/" + ssh ${HOST} "systemctl restart kubelet && kubeadm init phase etcd local --config=/tmp/etcdcfg.yaml" + done + echo "cluster init finished. use this command to check cluster status" + echo "docker run --rm -it --net host -v /etc/kubernetes:/etc/kubernetes registry.bing89.com/kubernetes/etcd:3.4.13-0 etcdctl --cert /etc/kubernetes/pki/etcd/peer.crt --key /etc/kubernetes/pki/etcd/peer.key --cacert /etc/kubernetes/pki/etcd/ca.crt --endpoints https://${HOST}:2379 endpoint health --cluster" +} + +init_controller(){ + echo "init controller: $@" + echo "warning: your kubelet will reset" + echo "backup ha pod if exists" + if [ -f /etc/kubernetes/manifests/haproxy.yaml ];then + cp /etc/kubernetes/manifests/haproxy.yaml /tmp/haproxy.yaml.backup + fi + + + echo "creating kubeadm config file" + ENDPOINTS="[" + for ETCD_HOST in ${ETCD_HOSTS[@]}; do + if [ "x${ENDPOINTS}" == "x[" ];then + ENDPOINTS="${ENDPOINTS}\"https://${ETCD_HOST}:2379\"" + else + ENDPOINTS="${ENDPOINTS},\"https://${ETCD_HOST}:2379\"" + fi + done + ENDPOINTS="${ENDPOINTS}]" + echo "etcd end points: ${ENDPOINTS}" + APISERVERSANS="[" + for CONTROLLER_HOST in ${CONTROLLER_HOSTS[@]} + do + if [ "x${APISERVERSANS}" == "x[" ];then + APISERVERSANS="${APISERVERSANS}\"${CONTROLLER_HOST}\"" + else + APISERVERSANS="${APISERVERSANS},\"${CONTROLLER_HOST}\"" + fi + done + APISERVERSANS="${APISERVERSANS}]" + cat </tmp/kubeadmcfg.yaml +apiVersion: kubelet.config.k8s.io/v1beta1 +kind: KubeletConfiguration +cgroupDriver: systemd +--- +apiVersion: kubeadm.k8s.io/v1beta2 +kind: ClusterConfiguration +kubernetesVersion: stable +controlPlaneEndpoint: "${APIHOST}:8443" +imageRepository: registry.bing89.com/kubernetes +etcd: + external: + endpoints: ${ENDPOINTS} + caFile: /etc/kubernetes/pki/etcd/ca.crt + certFile: /etc/kubernetes/pki/apiserver-etcd-client.crt + keyFile: /etc/kubernetes/pki/apiserver-etcd-client.key +apiServer: + certSANs: ${APISERVERSANS} +EOF + + kubeadm reset -f + echo "restore ha pod if exists" + if [ -f /tmp/haproxy.yaml.backup ];then + cp /tmp/haproxy.yaml.backup /etc/kubernetes/manifests/haproxy.yaml + systemctl restart kubelet + fi + mkdir /etc/kubernetes/pki/etcd/ + scp /tmp/$1/pki/etcd/ca.crt /etc/kubernetes/pki/etcd/ca.crt + scp /tmp/$1/pki/apiserver-etcd-client.crt /etc/kubernetes/pki/apiserver-etcd-client.crt + scp /tmp/$1/pki/apiserver-etcd-client.key /etc/kubernetes/pki/apiserver-etcd-client.key + kubeadm init --config /tmp/kubeadmcfg.yaml --upload-certs +} + +init_haproxy(){ + echo 'init haproxy' + echo 'install pcs' + for HOST in ${HA_HOSTS[@]} + do + ssh ${HOST} "yum install corosync pacemaker pcs fence-agents resource-agents -y && systemctl enable --now pcsd" + done + echo 'config pcs' + for HOST in ${HA_HOSTS[@]} + do + ssh ${HOST} "echo ${HAPASSWORD} | passwd --stdin hacluster && pcs cluster auth -u hacluster -p ${HAPASSWORD} ${HA_HOSTS}" + ssh ${HOST} "pcs cluster setup --start --name k8s_cluster ${HA_HOSTS}" + ssh ${HOST} "pcs cluster enable --all && pcs cluster start --all && pcs cluster status && pcs status corosync" + ssh ${HOST} "pcs property set stonith-enabled=false && pcs property set no-quorum-policy=ignore && crm_verify -L -V" + done + ssh ${HA_HOSTS[0]} "pcs resource create vip ocf:heartbeat:IPaddr2 ip=${APIHOSTS} cidr_netmask=28 op monitor interval=28s" + + echo 'write haproxy config...' + APISERVERS="" + INDEX=1 + PREFIX="k8smaster" + + cat </tmp/haproxy.cfg +# /etc/haproxy/haproxy.cfg +#--------------------------------------------------------------------- +# Global settings +#--------------------------------------------------------------------- +global + log /dev/log local0 + log /dev/log local1 notice + daemon + +#--------------------------------------------------------------------- +# common defaults that all the 'listen' and 'backend' sections will +# use if not designated in their block +#--------------------------------------------------------------------- +defaults + mode http + log global + option httplog + option dontlognull + option http-server-close + option forwardfor except 127.0.0.0/8 + option redispatch + retries 1 + timeout http-request 10s + timeout queue 20s + timeout connect 5s + timeout client 20s + timeout server 20s + timeout http-keep-alive 10s + timeout check 10s + +#--------------------------------------------------------------------- +# apiserver frontend which proxys to the masters +#--------------------------------------------------------------------- +frontend apiserver + bind *:8443 + mode tcp + option tcplog + default_backend apiserver + +#--------------------------------------------------------------------- +# round robin balancing for apiserver +#--------------------------------------------------------------------- +backend apiserver + option httpchk GET /healthz + http-check expect status 200 + mode tcp + option ssl-hello-chk + balance roundrobin +EOF +INDEX=0 +for HOST in ${HA_HOSTS[@]} +do + echo " server ${HOST} ${CONTROLLER_HOSTS[${INDEX}]}:6443 weight 1 maxconn 1000 check inter 2000 rise 2 fall 3\n" >> /tmp/haproxy.cfg + INDEX=$(expr ${INDEX} + 1) +done +echo "write haproxy pod yaml" +cat </tmp/haproxy.yaml +apiVersion: v1 +kind: Pod +metadata: + name: haproxy + namespace: kube-system +spec: + containers: + - image: registry.bing89.com/dockerhub/haproxy:lts-alpine + name: haproxy + livenessProbe: + failureThreshold: 8 + httpGet: + host: localhost + path: /healthz + port: 8443 + scheme: HTTPS + volumeMounts: + - mountPath: /usr/local/etc/haproxy/haproxy.cfg + name: haproxyconf + readOnly: true + hostNetwork: true + volumes: + - hostPath: + path: /etc/haproxy/haproxy.cfg + type: FileOrCreate + name: haproxyconf +status: {} +EOF + for HOST in ${CONTROLLER_HOSTS[@]} + do + ssh ${HOST} "if [ ! -d /etc/haproxy ];then mkdir /etc/haproxy; fi" + scp /tmp/haproxy.cfg ${HOST}:/etc/haproxy/haproxy.cfg + scp /tmp/haproxy.yaml ${HOST}:/etc/kubernetes/manifests/haproxy.yaml + done + echo 'init haproxy finished' +} + +init_kube_vip(){ + echo "init kube_vip..." + echo "exit" + exit 0 + for HOST in ${CONTROLLER_HOSTS[@]} + do + if [ ! -d /tmp/${HOST}/kube-vip ]; then + mkdir -p /tmp/${HOST}/kube-vip + fi + done +} + +init_network(){ + echo "init cni: $@" + +} + +USAGE_EXITS(){ + echo "this is help message." + exit 1 +} + +check_args(){ + if [ "x${ETCD_HOSTS}" == "x" ];then + USAGE_EXITS + fi + if [ "x${CONTROLLER_HOSTS}" == "x" ];then + USAGE_EXITS + fi + if [ "x${APIHOST}" == "x" ];then + USAGE_EXITS + fi +} +main(){ + COMMAND=$1 + shift + while getopts "c:e:n:a:p:h" arg + do + case ${arg} in + e) + ETCD_HOSTS=(${OPTARG//,/ }) + ;; + c) + CONTROLLER_HOSTS=(${OPTARG//,/ }) + ;; + n) + NETWORK_CNI=${OPTARG} + ;; + a) + APIHOST=${OPTARG} + ;; + p) + HA_HOSTS=(${OPTARG//,/ }) + ;; + h) + USAGE_EXITS + ;; + esac + done + check_args + case ${COMMAND} in + etcd) + # echo ${ETCD_HOSTS[0]} + init_etcd ${ETCD_HOSTS[@]} + ;; + controllplane) + init_controller ${ETCD_HOSTS} + ;; + network) + init_network ${NETWORK_CNI} + ;; + haproxy) + init_haproxy + ;; + kubevip) + init_kube_vip + ;; + help) + USAGE_EXITS + ;; + *) + USAGE_EXITS + ;; + esac +} + +main $@ diff --git a/kubernetes/installation/scripts/readme.md b/kubernetes/installation/scripts/readme.md new file mode 100644 index 0000000..1561cfb --- /dev/null +++ b/kubernetes/installation/scripts/readme.md @@ -0,0 +1,17 @@ +# install.sh 使用帮助 + +```bash +install.sh [command] -c [controlplane_hosts] -e [etcd_hosts] -n [network_name] -a [apiserver_host] [-p [haproxy_hosts]] [-h] +``` +## command + +现在脚本支持以下命令 + +- etcd 初始化etcd集群 必须使用-e指定etcd集群的节点列表 +- controlplane 初始化controlplane 必须使用-e指定etcd集群的节点列表，-c 指定controlplane节点列表，-a 指定apiserver的IP地址或域名 +- network 安装网络，必须使用-n指定要安装的网络名称，***该功能暂未开发完成*** +- haproxy 初始化haproxy， 必须-c 指定controlplane节点列表， -p 指定haproxy节点列表，***暂时配置为haproxy与controlplane位于同一节点，所以两个列表需要一一对应。*** + +## args + +节点列表使用`,`分隔，例如`192.168.1.2,192.168.1.3`或`node1,node2` \ No newline at end of file diff --git a/kubernetes/installation/ubuntu.md b/kubernetes/installation/ubuntu.md new file mode 100644 index 0000000..67aa980 --- /dev/null +++ b/kubernetes/installation/ubuntu.md @@ -0,0 +1,22 @@ +# ubuntu下安装kubernetes + +添加key + +```bash +https_proxy=192.168.0.11:1080 curl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg | apt-key add - +``` + +添加源 + +```bash +cat </etc/apt/sources.list.d/kubernetes.list +deb https://mirrors.tuna.tsinghua.edu.cn/kubernetes/apt kubernetes-xenial main +EOF +``` + +安装 + +```bash +apt update && apt install docker.io kubelet kubectl kubeadm -y +``` + diff --git a/kubernetes/kubectl/completion.md b/kubernetes/kubectl/completion.md new file mode 100644 index 0000000..47c1e9e --- /dev/null +++ b/kubernetes/kubectl/completion.md @@ -0,0 +1,23 @@ +# kubectl 命令自动填充配置 + +安装依赖 + +```bash +yum install -y bash-completion +``` + +生成自动完成配置 + +```bash +kubectl completion bash >.kubectl +``` + +添加配置到profile + +```bash +cat <>~/.bashrc +if [ -f ~/.kubectl ];then + . ~/.kubectl +fi +EOF +``` \ No newline at end of file diff --git a/kubernetes/mantaince/add_new_node.md b/kubernetes/mantaince/add_new_node.md new file mode 100644 index 0000000..202cc54 --- /dev/null +++ b/kubernetes/mantaince/add_new_node.md @@ -0,0 +1,25 @@ +# kubeadm添加一个新的节点 + +首先获取证书的hash值， 这个值用于 `--discovery-token-ca-cert-hash` + +```bash +HASH=$(openssl x509 -pubkey -in /etc/kubernetes/pki/ca.crt | openssl rsa -pubin -outform der 2>/dev/null | openssl dgst -sha256 -hex | sed 's/^.* //') +``` + +获取token, 这个值用于 `--token` + +```bash +kubeadm token list +``` + +如果没有任何token列出，创建一个 + +```bash +TOKEN=$(kubeadm token create) +``` + +添加节点到集群 + +```bash +kubeadm join k8smaster:6443 --token ${TOKEN} --discovery-token-ca-cert-hash sha256:${HASH} +``` diff --git a/kubernetes/mantaince/calico.md b/kubernetes/mantaince/calico.md new file mode 100644 index 0000000..e69de29 diff --git a/kubernetes/mantaince/change_master_ip.md b/kubernetes/mantaince/change_master_ip.md new file mode 100644 index 0000000..a373cd3 --- /dev/null +++ b/kubernetes/mantaince/change_master_ip.md @@ -0,0 +1,41 @@ +# 修改主节点IP地址 + +***本文只在单master节点上测试通过*** + +首先修改etcd和api-server的地址 + +```bash +OLD_IP="" +NEW_IP="" +sed -e "s/${OLD_IP}/${NEW_IP}/g" -i /etc/kubernetes/manifests/etcd.yaml +sed -e "s/${OLD_IP}/${NEW_IP}/g" -i /etc/kubernetes/manifests/kube-apiserver.yaml +``` + +生成新的conf + +```bash +kubeadm init phase kubeconfig admin --apiserver-advertise-address ${NEW_IP} +``` + +生成新的证书 + +```bash +mv /etc/kubernetes/pki/apiserver.key /etc/kubernetes/pki/apiserver.key.bak +mv /etc/kubernetes/pki/apiserver.crt /etc/kubernetes/pki/apiserver.crt.bak +kubeadm init phase certs apiserver --apiserver-advertise-address 192.168.0.31 +``` + +重启服务 + +***由于docker已被kubernetes抛弃，这里使用的containerd，使用docker的旧版kubernetes要重启docker*** + +```bash +systemctl restart containerd kubelet +``` + +更新kubectl的管理conf + +```bash +rm -f ~/.kube/config +cp /etc/kubernetes/admin.conf ~/.kube/config +``` \ No newline at end of file diff --git a/kubernetes/mantaince/delete_terminating_resource.md b/kubernetes/mantaince/delete_terminating_resource.md new file mode 100644 index 0000000..3ce9f44 --- /dev/null +++ b/kubernetes/mantaince/delete_terminating_resource.md @@ -0,0 +1,19 @@ +# 删除处于terminating状态无法删除的资源 + +以namespace为例 + +```bash +cat </tmp/m.json +{ + "apiVersion": "v1", + "kind": "Namespace", + "metadata": { + "name": "monitoring" + } +} +EOF + +kubectl proxy + +curl -k -H 'Content-Type:application/json' -X PUT --data-binary @/tmp/m.json http://127.0.0.1:8001/api/v1/namespaces/monitoring/finalize +```` \ No newline at end of file diff --git a/kubernetes/mantaince/nfs.md b/kubernetes/mantaince/nfs.md new file mode 100644 index 0000000..1fea0b5 --- /dev/null +++ b/kubernetes/mantaince/nfs.md @@ -0,0 +1,15 @@ +# nfs 使用问题 + +## `unexpected error getting claim reference: selfLink was empty, can't make reference` 导致pvc无法绑定挂载 + +编辑文件 `/etc/kubernetes/manifests/kube-apiserver.yaml` 添加内容 `--feature-gates=RemoveSelfLink=false` + +```yaml +- command: +.... +- --feature-gates=RemoveSelfLink=false +image: registry.aliyuncs.com/k8sxio/kube-apiserver:v1.21.2 +``` + +参见 [isuse](https://github.com/kubernetes-sigs/nfs-subdir-external-provisioner/issues/25) + diff --git a/kubernetes/network/dns/dns-autoscaler.yaml b/kubernetes/network/dns/dns-autoscaler.yaml new file mode 100644 index 0000000..36b4a59 --- /dev/null +++ b/kubernetes/network/dns/dns-autoscaler.yaml @@ -0,0 +1,35 @@ +apiVersion: apps/v1 +kind: Deployment +metadata: + name: dns-autoscaler + namespace: kube-system + labels: + k8s-app: dns-autoscaler +spec: + selector: + matchLabels: + k8s-app: dns-autoscaler + template: + metadata: + labels: + k8s-app: dns-autoscaler + spec: + containers: + - name: autoscaler + image: registry.bing89.com/gcrio/cluster-proportional-autoscaler-amd64:1.8.0 + resources: + requests: + cpu: 20m + memory: 10Mi + command: + - /cluster-proportional-autoscaler + - --namespace=kube-system + - --configmap=dns-autoscaler + - --target=deployment/coredns + # When cluster is using large nodes(with more cores), "coresPerReplica" should dominate. + # If using small nodes, "nodesPerReplica" should dominate. + - --default-params={"linear":{"coresPerReplica":256,"nodesPerReplica":16,"min":1}} + - --logtostderr=true + - --v=2 + imagePullSecrets: + - name: registry-bing89 \ No newline at end of file diff --git a/kubernetes/network/policy/pod_access_limit.md b/kubernetes/network/policy/pod_access_limit.md new file mode 100644 index 0000000..dfcec35 --- /dev/null +++ b/kubernetes/network/policy/pod_access_limit.md @@ -0,0 +1,56 @@ +# 限制pod访问 + +## 前期准备 + +创建一个pod + +```bash +kubectl create deployment nginx --image=nginx +``` + +暴露端口 + +``` +kubectl expose deployment nginx --port=80 +``` + +测试访问 + +``` +kubectl run busybox --rm -i --image=busybox /bin/sh +wget --spider --timeout=1 nginx +``` + +## 配置策略 + +nginx-policy.yaml + +```yaml +apiVersion: networking.k8s.io/v1 +kind: NetworkPolicy +metadata: + name: access-nginx +spec: + podSelector: + matchLabels: + app: nginx + ingress: + - from: + - podSelector: + matchLabels: + access: "true" +``` + +应用策略 + +``` +kubectl apply -f nginx-policy.yaml +``` + +***使用之前的测试方法，已经无法访问。*** + +测试访问 + +```bash +kubectl run busybox --rm -ti --labels="access=true" --image=busybox -- /bin/sh +``` \ No newline at end of file diff --git a/kubernetes/readme.md b/kubernetes/readme.md new file mode 100644 index 0000000..412b7dd --- /dev/null +++ b/kubernetes/readme.md @@ -0,0 +1,5 @@ +# Kubernetes + +安装[配置kubernetes](installation/readme.md) + +[kubernetes资源配置参考](demo/readme.md) \ No newline at end of file diff --git a/kubernetes/secrets/create_docker_pull.md b/kubernetes/secrets/create_docker_pull.md new file mode 100644 index 0000000..a9d59ec --- /dev/null +++ b/kubernetes/secrets/create_docker_pull.md @@ -0,0 +1,12 @@ +# 创建Docker镜像下载secret + +创建一个镜像下载secret + +```bash + kubectl create secret generic registry-bing89 --from-file=.dockerconfigjson=/root/.docker/config.json --type=kubernetes.io/dockerconfigjson +``` +或者 + +```bash +kubectl create secret docker-registry myregistrykey --docker-server=registry.bing89.com --docker-username=admin --docker-password=abcd1234 --docker-email=kun1.huang@outlook.com +``` \ No newline at end of file diff --git a/kubernetes/secrets/encryption.md b/kubernetes/secrets/encryption.md new file mode 100644 index 0000000..554bbbd --- /dev/null +++ b/kubernetes/secrets/encryption.md @@ -0,0 +1,139 @@ +# Secret 的静态加密 + +kubernetes 集群中，secret默认是明文存储(base64编码)。可以通过开启静态加密来对secret进行加密。 + +## 开启静态加密 + +通过配置apiserver来开启静态加密功能。 + +### 创建静态加密配置 + +开启静态加密需要一个配置文件。以下是配置示例： + +```yaml +apiVersion: apiserver.config.k8s.io/v1 +kind: EncryptionConfiguration +resources: + - resources: + - secrets + providers: + - identity: {} + - aesgcm: + keys: + - name: key1 + secret: c2VjcmV0IGlzIHNlY3VyZQ== + - name: key2 + secret: dGhpcyBpcyBwYXNzd29yZA== + - aescbc: + keys: + - name: key1 + secret: c2VjcmV0IGlzIHNlY3VyZQ== + - name: key2 + secret: dGhpcyBpcyBwYXNzd29yZA== + - secretbox: + keys: + - name: key1 + secret: YWJjZGVmZ2hpamtsbW5vcHFyc3R1dnd4eXoxMjM0NTY= +``` + +***这个配置示例是从官方文档复制来的。这是一个包含许多类型的配置，直接使用是无法加密的(可能是因为`- identity: {}`是列表第一项)，使用时请参考后面的配置*** + +kubernetes 支持 `identity`、`aescbc`、`secretbox`、`aesgcm`、`kms` 这几种加密方式，其中`aescbc`为官方推荐加密类型，`aesgcm`为不推荐加密类型，`kms`需要第三方工具管理。 + +加密密钥获取方式 + +```bash +head -c 32 /dev/urandom | base64 +``` +此命令会获得一个随机的32位密钥 + +***只提供需要的加密类型的配置*** + +```yaml +apiVersion: apiserver.config.k8s.io/v1 +kind: EncryptionConfiguration +resources: + - resources: + - secrets + providers: + - aescbc: + keys: + - name: key1 + secret: eGy+iOygy5lN1jWWYRVtVXywe5HDc1Op9lUgR5MRaPo= + - identity: {} +``` + +### 配置apiserver + +编辑文件`kube-apiserver.yaml` + +```yaml +apiVersion: v1 +kind: Pod +metadata: + ... +spec: + containers: + - command: + - kube-apiserver + ... + - --experimental-encryption-provider-config=/etc/kubernetes/pki/encryption.yaml +``` + +***如果是kubeadm安装的集群，配置文件位于`/etc/kubernetes/manifests/kube-apiserver.yaml`*** + +**注意：这里的加密配置文件放在`/etc/kubernetes/pki/encryption.yaml`，因为这个目录是默认挂载到apiserver的pod里的，也可以放在其他目录并修改挂载选项挂载进去** + +**注意：必须先写好配置文件，在修改apiserver的配置，否则apiserver可能需要多次重启** + +配置文件修改完成后，apiserver的pod会自动重启。 + +现在，新创建的secret会自动加密了。 + +## 验证 + +创建一个secret + +```bash +kubectl create secret generic secret1 -n default --from-literal=mykey=mydata +``` + +使用 etcdctl 命令行，从 etcd 中读取 secret： + +```bash +ETCD_POD=$(kubectl -n kube-system get pod -l component=etcd -o name) +kubectl -n kube-system exec -it ${ETCD_POD} -- etcdctl get /registry/secrets/default/secret1 --endpoints=localhost:2379 --cert=/etc/kubernetes/pki/etcd/peer.crt --key=/etc/kubernetes/pki/etcd/peer.key --cacert=/etc/kubernetes/pki/etcd/ca.crt |hexdump -C +``` +***这个是从官方文档改成kubectl的命令，原命令`ETCDCTL_API=3 etcdctl get /registry/secrets/default/secret1 [你的参数] | hexdump -C`*** + +可以在结果中找到`1..k8s:enc:aescb`表示加密成功，这是文件的其他内容都是乱码 + +```text +00000000 2f 72 65 67 69 73 74 72 79 2f 73 65 63 72 65 74 |/registry/secret| + 00000010 73 2f 64 65 66 61 75 6c 74 2f 73 65 63 72 65 74 |s/default/secret| + 00000020 31 0d 0a 6b 38 73 3a 65 6e 63 3a 61 65 73 63 62 |1..k8s:enc:aescb| + 00000030 63 3a 76 31 3a 6b 65 79 31 3a c6 76 5c ca d4 9a |c:v1:key1:.v\...| + 00000040 ee 49 87 86 98 7e d9 22 30 42 16 c7 9a 7e e1 08 |.I...~."0B...~..| + 00000050 71 e1 8b 1d bc 57 44 ae 04 77 5f 8f 5c f6 29 ee |q....WD..w_.\.).| + 00000060 8f 3c ed 2b cc 8a cb d2 25 fd b2 ba 3a c3 c5 5e |.<.+....%...:..^| + 00000070 70 99 03 6e 0d 0a e9 c4 90 a4 cb e3 09 92 ec de |p..n............| + 00000080 2f 20 eb 35 b7 be 93 f0 09 a1 84 48 8c 3a ed 43 |/ .5.......H.:.C| + 00000090 47 b6 cf 96 cc 25 7e 54 f3 c2 93 34 cc 0c 25 6d |G....%~T...4..%m| + 000000a0 d9 df ca f3 ed a1 d8 8e 55 1b 26 58 d9 3f f2 fc |........U.&X.?..| + 000000b0 58 ed a1 0f 4d 4b e9 11 bf ba e0 52 4f 74 8e 5b |X...MK.....ROt.[| + 000000c0 47 c3 68 db f9 6c e9 b5 f5 3c 1c 64 a4 49 9b 68 |G.h..l...<.d.I.h| + 000000d0 18 30 de d9 1c 36 fb 43 e2 d7 0f 18 84 09 2d 46 |.0...6.C......-F| + 000000e0 b1 97 31 87 0f eb 68 83 2c 4f 0b 42 1c 01 d0 ca |..1...h.,O.B....| + 000000f0 e2 88 b9 0c 97 cf 77 8d d1 73 83 ed 1d c2 19 57 |......w..s.....W| + 00000100 2f f0 cd 5e 39 19 d6 67 fd 73 88 ab 09 bf 90 09 |/..^9..g.s......| + 00000110 78 69 1e 60 22 60 97 b9 83 c4 38 0c ea e2 02 9a |xi.`"`....8.....| + 00000120 16 ac 6e ca 3e c1 28 77 21 32 4a 7a 5a a0 11 4f |..n.>.(w!2JzZ..O| + 00000130 d4 1f 2b a8 6b 85 43 47 fb 43 ea 0d 0a |..+.k.CG.C...| +0000013d +``` + +通过api查看 + +```bash +kubectl describe secret secret1 -n default +``` \ No newline at end of file diff --git a/kubernetes/secrets/readme.md b/kubernetes/secrets/readme.md new file mode 100644 index 0000000..dddd7a9 --- /dev/null +++ b/kubernetes/secrets/readme.md @@ -0,0 +1,5 @@ +# Secrets + +[静态加密](encryption.md) + +[创建Docker镜像下载secret](create_docker_pull.md) \ No newline at end of file diff --git a/kubernetes/upgrade/readme.md b/kubernetes/upgrade/readme.md new file mode 100644 index 0000000..3b6abfb --- /dev/null +++ b/kubernetes/upgrade/readme.md @@ -0,0 +1,94 @@ +# Kubernetes集群升级 + +只能从一个次版本升级到下一个次版本，或者在次版本相同时升级补丁版本。 也就是说，升级时不可以跳过次版本。 例如，你只能从 1.y 升级到 1.y+1，而不能从 1.y 升级到 1.y+2。 + +## 升级control plane + +必须先升级第一个controlplane + +升级`kubeadm` + +```bash +export VERSION="1.20.1" +yum install -y kubeadm-${VERSION}-0 --disableexcludes=kubernetes +``` + +腾空controlplane + +```bash +export NODE="k8smaster1" +kubectl drain ${NODE} --ignore-daemonsets +``` + +查看是否可以升级以及可升级的版本 + +```bash +kubeadm upgrade plan +``` + +升级到指定版本 + +```bash +kubeadm upgrade apply v${VERSION} +``` + +取消控制面节点的保护 + +```bash +kubectl uncordon ${NODE} +``` + +升级其他controlplane, 参考[升级node](##升级node) + +## 升级node + +升级之前，请确保control plane已经升级，建议一次只升级1个或部分节点，避免影响服务。 + +升级`kubeadm`，在node执行 + +```bash +export VERSION="1.20.1-0" +yum install -y kubeadm-${VERSION} --disableexcludes=kubernetes +``` + +将节点标记为不可调度并逐出工作负载，为维护做好准备。在control执行 + +```bash +export NODE="k8snode1" +kubectl drain ${NODE} --ignore-daemonsets +``` + +输出类似下文 + +```bash +node/k8snode1 already cordoned +WARNING: ignoring DaemonSet-managed Pods: kube-system/calico-node-jcpf2, kube-system/kube-proxy-rsskt +evicting pod kube-system/calico-kube-controllers-744cfdf676-g86dz +pod/calico-kube-controllers-744cfdf676-g86dz evicted +node/k8snode1 evicted +``` + +升级kubelet配置，在node执行 + +```bash +kubeadm upgrade node +``` + +升级kubelet服务，在node执行 + +```bash +yum install -y kubelet-${VERSION} kubectl-${VERSION} --disableexcludes=kubernetes +``` + +重启服务 + +```bash +systemctl daemon-reload +systemctl restart kubelet +``` + +将节点标记为可调度，让节点重新上线 + +```bash +kubectl uncordon ${NODE} +``` \ No newline at end of file diff --git a/kvm/bridge/readme.md b/kvm/bridge/readme.md new file mode 100644 index 0000000..ec25f94 --- /dev/null +++ b/kvm/bridge/readme.md @@ -0,0 +1,11 @@ +# 创建bridge + +centos 7.6 之后没有brctl了 + +```bash +nmcli connection +nmcli connection add type bridge con-name vir0 ifname vir0 autoconnect yes +sudo nmcli connection add type bridge con-name vir0 ifname vir0 autoconnect yes +nmcli connection +sudo nmcli connection add type bridge-slave ifname enp4s0 master vir0 && sudo nmcli connection down enp4s0 && sudo nmcli connection up vir0 && nmcli connection +``` \ No newline at end of file diff --git a/kvm/qemu/qemu-img.md b/kvm/qemu/qemu-img.md new file mode 100644 index 0000000..3f2ab50 --- /dev/null +++ b/kvm/qemu/qemu-img.md @@ -0,0 +1,8 @@ +# qemu-img +qemu-img 是kvm的卷管理工具。 + +## 创建一个卷 + +```bash +qemu-img create -f qcow2 centos7.qcow2 20G +``` \ No newline at end of file diff --git a/kvm/qemu/readme.md b/kvm/qemu/readme.md new file mode 100644 index 0000000..9141c5c --- /dev/null +++ b/kvm/qemu/readme.md @@ -0,0 +1 @@ +# qemu \ No newline at end of file diff --git a/kvm/readm.md b/kvm/readm.md new file mode 100644 index 0000000..a03b4b3 --- /dev/null +++ b/kvm/readm.md @@ -0,0 +1,2 @@ +# kvm +linux 虚拟机 \ No newline at end of file diff --git a/kvm/virsh/example.xml b/kvm/virsh/example.xml new file mode 100644 index 0000000..7f1a20c --- /dev/null +++ b/kvm/virsh/example.xml @@ -0,0 +1,37 @@ + + test_ubuntu + 4194304 + 4194304 + 2 + + hvm + + + + + + + + + destroy + restart + destroy + + /usr/libexec/qemu-kvm + + + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/kvm/virsh/readme.md b/kvm/virsh/readme.md new file mode 100644 index 0000000..6ab8da1 --- /dev/null +++ b/kvm/virsh/readme.md @@ -0,0 +1,4 @@ +# virsh +kvm 命令行管理工具virsh + +# \ No newline at end of file diff --git a/linux/centos/kde.md b/linux/centos/kde.md new file mode 100644 index 0000000..7f3cfb7 --- /dev/null +++ b/linux/centos/kde.md @@ -0,0 +1,43 @@ +# centos 8 安装kde5 + +本安装方法适用于 centos8， rockylinux8 + +kde5 并未包含在系统软件仓库中，需要添加epel源 + +```bash +yum install https://dl.fedoraproject.org/pub/epel/epel-release-latest-8.noarch.rpm +``` + +或者 + +```bash +dnf install epel-release +``` + +使用国内源 + +```bash +sed -e 's!^metalink=!#metalink=!g' -e 's!^#baseurl=!baseurl=!g' -e 's!//download\.fedoraproject\.org/pub!//mirrors.tuna.tsinghua.edu.cn!g' -e 's!http://mirrors!https://mirrors!g' -i /etc/yum.repos.d/epel.repo + +sed -e 's!^metalink=!#metalink=!g' -e 's!^#baseurl=!baseurl=!g' -e 's!//download\.example/pub!//mirrors.tuna.tsinghua.edu.cn!g' -e 's!http://mirrors!https://mirrors!g' -i /etc/yum.repos.d/epel.repo +``` + +开启epel-extra包 + +```bash +dnf config-manager --set-enabled powertools +``` + +安装kde5 + +```bash +yum group install 'KDE Plasma Workspaces' +systemctl set-default graphical.target +systemctl enable sddm +``` + +重启电脑 + +```bash +reboot +``` \ No newline at end of file diff --git a/linux/centos/xrdp.md b/linux/centos/xrdp.md new file mode 100644 index 0000000..17c693c --- /dev/null +++ b/linux/centos/xrdp.md @@ -0,0 +1,16 @@ +# CentOS安装xrdp + +xrdp需要安装桌面环境。 + +```bash +sudo yum group install "Server with GUI" +``` + +安装xrdp + +```bash +sudo yum install xrdp +sudo systemctl enable --now xrdp +echo 'exec gnome-session' >> /etc/xrdp/xrdp.ini +sudo systemctl restart xrdp +``` \ No newline at end of file diff --git a/linux/rocky/install.md b/linux/rocky/install.md new file mode 100644 index 0000000..958bb03 --- /dev/null +++ b/linux/rocky/install.md @@ -0,0 +1,10 @@ +# 安装 rocky + +## 配置rocky使用国内源 + +```bash +sed -e 's|^mirrorlist=|#mirrorlist=|g' \ + -e 's|^#baseurl=http://dl.rockylinux.org/$contentdir|baseurl=https://mirrors.sjtug.sjtu.edu.cn/rocky|g' \ + -i.bak \ + /etc/yum.repos.d/Rocky-*.repo +``` \ No newline at end of file diff --git a/parser/fluent.css b/parser/fluent.css new file mode 100644 index 0000000..8fd1f96 --- /dev/null +++ b/parser/fluent.css @@ -0,0 +1,728 @@ +:root { + --side-bar-bg-color: #fafafa; + --control-text-color: #777; + --monospace: "Jetbrains Mono", "思源黑体 CN"; +} + +.title-text { + font-size: 14px; +} + +body, .title-text { + background-color: white; + font-family: "Inter", "思源黑体 CN"; + color: rgb(12, 12, 12); + line-height: 1.6; +} + +#write { + max-width: 960px; + margin: 0 auto; + padding: 30px; + padding-bottom: 100px; +} + +#write>ul:first-child, #write>ol:first-child { + margin-top: 30px; +} + +a.md-inner-link { + color: #3b78e7; +} + +h1, h2, h3, h4, h5, h6 { + position: relative; + margin-top: 1rem; + margin-bottom: 1rem; + font-weight: 700; + line-height: 1.4; + cursor: text; + 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+ opacity: 0.5; +} + +@media print { + html { + font-size: 13px; + background-color: white; + line-height: 3!important; + } + body { + margin-top: 24px!important; + margin-bottom: 24px!important; + } + table, pre { + page-break-inside: avoid; + } + pre { + word-wrap: break-word; + } + ol { + border: 1px solid rgb(238, 238, 238); + border-radius: 4px; + padding-top: 12px; + padding-bottom: 8px; + padding-right: 4px; + } + a>span>code, a>code, a code { + background-color: #3b78e718!important; + } + a { + color: #3b78e7!important; + text-decoration: none!important; + } + .md-plain { + line-height: 3!important; + } + .page-break { + page-break-after: always; + break-after: page; + } + .page-break:before { + content: none + } + code { + font-variant-ligatures: common-ligatures!important; + } +} + +.page-break:before { + background-color: #05685b; +} + +.page-break:before { + content: "Page Break" +} + +.md-toc-inner { + margin: 2px; +} + +.md-toc-h1 { + margin-top: 16px; +} + +.md-toc-h2 { + margin-top: 8px; +} + +/* h1 strong, h2 strong, h3 strong, h4 strong, h6 strong, .md-toc strong{ + font-weight: 800; + border-radius: 4px; + background-color: #f1f3f4; +} */ + +.md-p a, a.md-toc-inner { + color: #3b78e7!important; + text-decoration: none!important; + border-bottom: 2px solid #3b78e700; + transition: all 0.16s; +} + +.md-p a:hover, a.md-toc-inner:hover { + color: #3b78e7!important; + text-decoration: none!important; + border-bottom: 2px solid #3b78e7; + transition: all 0.16s; +} + +.md-content.md-url { + color: #05685b!important; + text-decoration: none!important; + font-family: 'Jetbrains Mono'; +} + +a>span>code, a>code, a code { + color: #3b78e7!important; + text-decoration: none!important; + background-color: #3b78e718!important; +} + +.md-link { + text-decoration: none!important; + border-bottom: 2px solid #3b78e700; + transition: all .2s; +} + +.md-link:hover { + border-bottom: 2px solid #3b78e7ff; + transition: all .2s; +} + +.md-fences { + background-color: #f4f7f8; + border-radius: 4px; + padding: 12px; + font-size: 0.9em; + font-family: 'Jetbrains Mono', '思源黑体 CN'; +} + +#write pre.md-meta-block { + padding: 1rem; + font-size: 85%; + line-height: 1.45; + background-color: #f7f7f7; + border: 0; + border-radius: 3px; + color: #777777; + margin-top: 0 !important; +} + +.mathjax-block>.code-tooltip { + bottom: .2rem; +} + +.md-mathjax-midline { + background: #fafafa; +} + +#write>h3.md-focus:before { + left: -1.5625rem; + top: .375rem; +} + +#write>h4.md-focus:before { + left: -1.5625rem; + top: .285714286rem; +} + +#write>h5.md-focus:before { + left: -1.5625rem; + top: .285714286rem; +} + +#write>h6.md-focus:before { + left: -1.5625rem; + top: .285714286rem; +} + +.md-image>.md-meta { + /*border: 1px solid #ddd;*/ + border-radius: 3px; + padding: 2px 0px 0px 4px; + font-size: 0.9em; + color: inherit; +} + +.md-tag { + color: #a7a7a7; + opacity: 1; +} + +.md-toc { + margin-top: 20px; + padding-bottom: 20px; +} + +.sidebar-tabs { + border-bottom: none; +} + +#typora-quick-open { + border: 1px solid #ddd; + background-color: #f8f8f8; +} + +#typora-quick-open-item { + background-color: #FAFAFA; + border-color: #FEFEFE #e5e5e5 #e5e5e5 #eee; + border-style: solid; + border-width: 1px; +} + +/** focus mode */ + +.on-focus-mode blockquote { + border-left-color: rgba(85, 85, 85, 0.12); +} + +header, .context-menu, .megamenu-content, footer { + font-family: "Inter", "思源黑体 CN"; +} + +.file-node-content:hover .file-node-icon, .file-node-content:hover .file-node-open-state { + visibility: visible; +} + +.mac-seamless-mode #typora-sidebar { + background-color: #fafafa; + background-color: var(--side-bar-bg-color); +} + +.md-lang { + color: #b4654d; +} + +.html-for-mac .context-menu { + --item-hover-bg-color: #E6F0FE; +} + +#md-notification .btn { + border: 0; +} + +.dropdown-menu .divider { + border-color: #e5e5e5; +} + +.ty-preferences .window-content { + background-color: #fafafa; +} + +.ty-preferences .nav-group-item.active { + color: white; + background: #00000010; +} + +.CodeMirror-linenumber { + color: rgba(20, 20, 20, 0.3); +} + +.CodeMirror-gutters { + border-right: none; + /* border-right: 1.08px solid rgba(20, 20, 20, 0.3); */ +} + +.context-menu { + border: none!important; + backdrop-filter: saturate(180%) blur(20px) brightness(1.1); + background-color: #ffffffd0; + box-shadow: 0 25.6px 57.6px 0 rgba(0, 0, 0, .22), 0 4.8px 14.4px 0 rgba(0, 0, 0, .18)!important; +} + +.divider { + background-color: #00000020!important; + border: none!important; +} + +.ty-footer, .sidebar-footer { + backdrop-filter: saturate(180%) blur(20px) brightness(1.1); + border: none!important; + background: none; + background-color: #ffffff70; + box-shadow: 0 25.6px 57.6px 0 rgba(0, 0, 0, .22), 0 4.8px 14.4px 0 rgba(0, 0, 0, .18); +} + +#sidebar-files-menu { + border-radius: 4px; + border: none!important; + background-color: #ffffff; + box-shadow: 0 25.6px 57.6px 0 rgba(0, 0, 0, .22), 0 4.8px 14.4px 0 rgba(0, 0, 0, .18); +} + +@media (min-width: 1000px) { + footer.ty-footer { + background-color: #ffffff70; + border: none!important; + right: 0!important; + backdrop-filter: saturate(180%) blur(20px) brightness(1.1); + } +} + +@media (max-width: 1000px) { + footer.ty-footer { + background-color: #ffffff70; + border: none!important; + backdrop-filter: saturate(180%) blur(20px) brightness(1.1); + box-shadow: 0 25.6px 57.6px 0 rgba(0, 0, 0, .22), 0 4.8px 14.4px 0 rgba(0, 0, 0, .18); + } +} + +.code-tooltip.md-tooltip-hide.md-hover-tip { + box-shadow: 0 25.6px 57.6px 0 rgba(0, 0, 0, .22), 0 4.8px 14.4px 0 rgba(0, 0, 0, .18); +} + +.md-rawblock-control.md-rawblock-after { + margin-bottom: 12px; +} + +#typora-sidebar { + background-color: #fafafa!important; + border: none!important; + box-shadow: 0 6.4px 14.4px 0 rgba(0, 0, 0, .132), 0 1.2px 3.6px 0 rgba(0, 0, 0, .108)!important; +} + +.file-node-title { + color: #0f0f0f; +} + +#footer-word-count-info, #spell-check-panel { + border: none!important; + background-color: #ffffff!important; + box-shadow: 0 25.6px 57.6px 0 rgba(0, 0, 0, .22), 0 4.8px 14.4px 0 rgba(0, 0, 0, .18)!important; +} + +content { + bottom: 4px; +} + +@font-face { + font-family: 'FontAwesome2'; + src: url('fluent/fontawesome-webfont.eot?v=4.7.0'); + src: url('fluent/fontawesome-webfont.eot?#iefix&v=4.7.0') format('embedded-opentype'), url('fluent/fontawesome-webfont.woff2?v=4.7.0') format('woff2'), url('fluent/fontawesome-webfont.woff?v=4.7.0') format('woff'), url('fluent/fontawesome-webfont.ttf?v=4.7.0') format('truetype'), url('fluent/fontawesome-webfont.svg?v=4.7.0#fontawesomeregular') format('svg'); + font-weight: normal; + font-style: normal; +} + +blockquote>h4, blockquote>h5, blockquote>h6 { + font-size: 1em; + columns: inherit; +} + +blockquote>h4::before { + width: 24px; + content: "\f097"; + display: inline-block; + font: normal normal normal 14px/1 FontAwesome2; + font-size: 1em; + text-rendering: auto; + -webkit-font-smoothing: antialiased; + -moz-osx-font-smoothing: grayscale; +} + +blockquote>h5::before { + width: 32px; + content: "e.g."; + display: inline-block; + font-style: italic; + font-size: 1.2em; + text-rendering: auto; + -webkit-font-smoothing: antialiased; + -moz-osx-font-smoothing: grayscale; + opacity: 0.5; +} + +blockquote>h6::before { + width: 24px; + content: "\f27b"; + display: inline-block; + font: normal normal normal 14px/1 FontAwesome2; + font-size: 1em; + text-rendering: auto; + -webkit-font-smoothing: antialiased; + -moz-osx-font-smoothing: grayscale; + columns: inherit; +} + +.ol-list { + border: 1px solid rgb(238, 238, 238); + border-radius: 4px; + padding-top: 12px; + padding-bottom: 12px; + padding-right: 12px; +} + +.MetaInfo-Author { + opacity: 0.6; + margin-top: -6px +} + +.MetaInfo-Deadline { + display: none; + opacity: 0 +} + +.cm-keyword, .cm-variable-3, .cm-tag { + color: #3b78e7!important +} + +.cm-def, .cm-attribute { + color: #9c27b0!important +} + +.cm-comment { + color: #d81b60!important; + font-style: oblique!important; + font-variant-ligatures: common-ligatures!important; + font-variation-settings: 'slnt' -9; +} + +.cm-string { + color: #0d904f!important; + font-style: italic!important; + font-variant-ligatures: common-ligatures!important; +} + +.cm-tag:not(.cm-bracket) { + font-weight: 700; +} + +.cm-operator { + color: #d81b60!important; +} + +.cm-number { + color: #d81b60!important; +} + +.cm-meta { + color: #9c27b0!important; + font-weight: 700!important; +} + +.cm-builtin { + font-style: italic!important; +} + +.file-tree-node.active>.file-node-background { + background-color: var(--active-file-bg-color); + border-left: 4px solid #3b78e7!important; + border-color: #3b78e7!important; + background-color: #3b78e718!important; +} \ No newline at end of file diff --git a/parser/go.mod b/parser/go.mod new file mode 100644 index 0000000..3b2c6c4 --- /dev/null +++ b/parser/go.mod @@ -0,0 +1,5 @@ +module blog.bing89.com/parser + +go 1.16 + +require github.com/gomarkdown/markdown v0.0.0-20210208175418-bda154fe17d8 diff --git a/parser/go.sum b/parser/go.sum new file mode 100644 index 0000000..876f1d5 --- /dev/null +++ b/parser/go.sum @@ -0,0 +1,3 @@ +github.com/gomarkdown/markdown v0.0.0-20210208175418-bda154fe17d8 h1:nWU6p08f1VgIalT6iZyqXi4o5cZsz4X6qa87nusfcsc= +github.com/gomarkdown/markdown v0.0.0-20210208175418-bda154fe17d8/go.mod h1:aii0r/K0ZnHv7G0KF7xy1v0A7s2Ljrb5byB7MO5p6TU= +golang.org/dl v0.0.0-20190829154251-82a15e2f2ead/go.mod h1:IUMfjQLJQd4UTqG1Z90tenwKoCX93Gn3MAQJMOSBsDQ= diff --git a/parser/main.go b/parser/main.go new file mode 100644 index 0000000..19a7508 --- /dev/null +++ b/parser/main.go @@ -0,0 +1,38 @@ +package main + +import ( + "fmt" + "io/ioutil" + "os" + + "github.com/gomarkdown/markdown" + "github.com/gomarkdown/markdown/html" + "github.com/gomarkdown/markdown/parser" +) + +func main(){ + file, err := os.Open("test.md") + if err != nil { + panic(err) + } + defer file.Close() + data, err := ioutil.ReadAll(file) + if err != nil { + panic(err) + } + htmlFlags := html.CommonFlags | html.HrefTargetBlank | html.CompletePage + var extensions = parser.NoIntraEmphasis | + parser.Tables | + parser.FencedCode | + parser.Autolink | + parser.Strikethrough | + parser.SpaceHeadings + opts := html.RendererOptions{ + Flags: htmlFlags, + CSS: "http://www.bing89.com/css/markdown/fluent.css", + } + renderer := html.NewRenderer(opts) + parser := parser.NewWithExtensions(extensions) + html := markdown.ToHTML(data, parser, renderer) + fmt.Println(string(html)) +} \ No newline at end of file diff --git a/parser/test.html b/parser/test.html new file mode 100644 index 0000000..51ae3b9 --- /dev/null +++ b/parser/test.html @@ -0,0 +1,29 @@ + + + + + + + + + + +

this is a test

+ +

this is a test

+ +

test subtitle

+ +
#include <iostream>
+using namespace std;
+int main(){
+    cout<<"helloworld!"
+    return 0
+}
+
+ +

this is a test link

+ + + + diff --git a/parser/test.md b/parser/test.md new file mode 100644 index 0000000..4ced3dd --- /dev/null +++ b/parser/test.md @@ -0,0 +1,16 @@ +# this is a test + +this is a test + +## test subtitle + +```c++ +#include +using namespace std; +int main(){ + cout<<"helloworld!" + return 0 +} +``` + +[this is a test link](main.go) \ No newline at end of file