generated from bing/readnotes
155 lines
2.5 KiB
Markdown
155 lines
2.5 KiB
Markdown
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# crictl
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crictl 是一个开源的container runtime 管理工具。
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## 安装crictl
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crictl是kubeadmin的依赖包，安装kubeadm会自动安装cri-tools包
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也可以安装指定版本
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```bash
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VERSION="v1.20.0"
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wget https://github.com/kubernetes-sigs/cri-tools/releases/download/$VERSION/crictl-$VERSION-linux-amd64.tar.gz
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sudo tar zxvf crictl-$VERSION-linux-amd64.tar.gz -C /usr/local/bin
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rm -f crictl-$VERSION-linux-amd64.tar.gz
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```
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***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***
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## 配置crictl
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配置文件位于`/etc/crictl.yaml`
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docker
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```bash
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runtime-endpoint: unix:///var/run/dockershim.sock
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image-endpoint: unix:///var/run/dockershim.sock
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timeout: 2
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debug: true
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pull-image-on-create: false
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```
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containerd
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```bash
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cat <<EOF >/etc/crictl.yaml
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runtime-endpoint: unix:///run/containerd/containerd.sock
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image-endpoint: unix:///run/containerd/containerd.sock
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timeout: 10
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debug: false
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EOF
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```
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## 创建pod
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编写pod配置,需要两个json文件或两个yaml文件
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pod.json
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```json
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{
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"metadata": {
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"name": "nginx-sandbox",
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"namespace": "default",
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"attempt": 1,
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"uid": "hdishd83djaidwnduwk28bcsb"
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},
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"log_directory": "/tmp",
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"linux": {
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}
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}
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```
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container.json
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```json
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{
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"metadata": {
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"name": "busybox"
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},
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"image":{
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"image": "busybox"
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},
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"command": [
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"top"
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],
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"log_path":"busybox.0.log",
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"linux": {
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}
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}
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```
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pod.yaml
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```yaml
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metadata:
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attempt: 1
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name: busybox-sandbox
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namespace: default
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uid: hdishd83djaidwnduwk28bcsb
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log_directory: /tmp
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linux:
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namespaces:
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options: {}
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```
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container.yaml
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```yaml
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metadata:
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name: busybox
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image:
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image: busybox:latest
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command:
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- top
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log_path: busybox.0.log
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```
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执行命令
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```bash
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crictl runp container.json pod.json
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#crictl runp container.yaml pod.yaml
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```
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## nginx
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container.yaml
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```yaml
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metadata:
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name: nginx
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image:
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image: nginx:1.19
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log_path: nginx.0.log
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mounts:
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- container_path: /etc/nginx/nginx.conf
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host_path: /etc/nginx/nginx.conf
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readonly: true
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- container_path: /etc/nginx/conf.d
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host_path: /etc/nginx/conf.d
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readonly: true
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linux:
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namespaces:
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options: {}
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```
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pod.yaml
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```yaml
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metadata:
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attempt: 1
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name: nginx-pod
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namespace: default
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log_directory: /tmp/nginx
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linux:
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namespaces:
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options: {}
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port_mappings:
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- host_port: 80
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container_port: 80
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host_ip: 0.0.0.0
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- host_port: 443
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container_port: 443
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host_ip: 0.0.0.0
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```
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