diff --git a/go.mod b/go.mod
index b333d71..230152e 100644
--- a/go.mod
+++ b/go.mod
@@ -5,9 +5,9 @@ go 1.17
 require (
 	github.com/coreos/go-oidc/v3 v3.1.0
 	github.com/gin-gonic/gin v1.8.1
+	github.com/skip2/go-qrcode v0.0.0-20200617195104-da1b6568686e
 	github.com/spf13/cobra v1.3.0
 	golang.org/x/oauth2 v0.0.0-20211104180415-d3ed0bb246c8
-	gopkg.in/antage/eventsource.v1 v1.0.0-20150318155416-803f4c5af225
 	k8s.io/api v0.23.1
 	k8s.io/apimachinery v0.23.1
 	k8s.io/client-go v0.23.1
diff --git a/go.sum b/go.sum
index acab370..3910ea5 100644
--- a/go.sum
+++ b/go.sum
@@ -398,6 +398,8 @@ github.com/sagikazarmark/crypt v0.3.0/go.mod h1:uD/D+6UF4SrIR1uGEv7bBNkNqLGqUr43
 github.com/sean-/seed v0.0.0-20170313163322-e2103e2c3529/go.mod h1:DxrIzT+xaE7yg65j358z/aeFdxmN0P9QXhEzd20vsDc=
 github.com/sirupsen/logrus v1.2.0/go.mod h1:LxeOpSwHxABJmUn/MG1IvRgCAasNZTLOkJPxbbu5VWo=
 github.com/sirupsen/logrus v1.4.2/go.mod h1:tLMulIdttU9McNUspp0xgXVQah82FyeX6MwdIuYE2rE=
+github.com/skip2/go-qrcode v0.0.0-20200617195104-da1b6568686e h1:MRM5ITcdelLK2j1vwZ3Je0FKVCfqOLp5zO6trqMLYs0=
+github.com/skip2/go-qrcode v0.0.0-20200617195104-da1b6568686e/go.mod h1:XV66xRDqSt+GTGFMVlhk3ULuV0y9ZmzeVGR4mloJI3M=
 github.com/spaolacci/murmur3 v0.0.0-20180118202830-f09979ecbc72/go.mod h1:JwIasOWyU6f++ZhiEuf87xNszmSA2myDM2Kzu9HwQUA=
 github.com/spf13/afero v1.2.2/go.mod h1:9ZxEEn6pIJ8Rxe320qSDBk6AsU0r9pR7Q4OcevTdifk=
 github.com/spf13/afero v1.3.3/go.mod h1:5KUK8ByomD5Ti5Artl0RtHeI5pTF7MIDuXL3yY520V4=
@@ -868,8 +870,6 @@ google.golang.org/protobuf v1.27.1/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQ
 google.golang.org/protobuf v1.28.0 h1:w43yiav+6bVFTBQFZX0r7ipe9JQ1QsbMgHwbBziscLw=
 google.golang.org/protobuf v1.28.0/go.mod h1:HV8QOd/L58Z+nl8r43ehVNZIU/HEI6OcFqwMG9pJV4I=
 gopkg.in/alecthomas/kingpin.v2 v2.2.6/go.mod h1:FMv+mEhP44yOT+4EoQTLFTRgOQ1FBLkstjWtayDeSgw=
-gopkg.in/antage/eventsource.v1 v1.0.0-20150318155416-803f4c5af225 h1:xy+AV3uSExoRQc2qWXeZdbhFGwBFK/AmGlrBZEjbvuQ=
-gopkg.in/antage/eventsource.v1 v1.0.0-20150318155416-803f4c5af225/go.mod h1:SiXNRpUllqhl+GIw2V/BtKI7BUlz+uxov9vBFtXHqh8=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
diff --git a/go/notify/index.html b/go/notify/index.html
index 87c298b..40eec83 100644
--- a/go/notify/index.html
+++ b/go/notify/index.html
@@ -20,6 +20,7 @@
 <div>
     <ul id="log">
     </ul>
+    <img data=""/>
 </div>
 </body>
 </html>
\ No newline at end of file
diff --git a/go/qrcode/main.go b/go/qrcode/main.go
new file mode 100644
index 0000000..7deb7df
--- /dev/null
+++ b/go/qrcode/main.go
@@ -0,0 +1,25 @@
+package main
+
+import (
+	"image/color"
+	"log"
+	"os"
+
+	"github.com/skip2/go-qrcode"
+)
+
+func main(){
+	code, err := qrcode.New("http://weixin.qq.com/q/02vEhthpJ1fqD1mfbvxzcy", qrcode.High)
+	if err != nil {
+		log.Fatal(err)
+	}
+	code.BackgroundColor = color.Transparent
+	data, err := code.PNG(256)
+	if err != nil {
+		log.Fatal(err)
+	}
+	err = os.WriteFile("tmp.png", data, os.ModePerm)
+	if err != nil {
+		log.Fatal(err)
+	}
+}
\ No newline at end of file
diff --git a/go/qrcode/tmp.png b/go/qrcode/tmp.png
new file mode 100755
index 0000000..b73eccc
Binary files /dev/null and b/go/qrcode/tmp.png differ
diff --git a/kubernetes/installation/containerd.md b/kubernetes/installation/containerd.md
index 563e52f..3bcb853 100644
--- a/kubernetes/installation/containerd.md
+++ b/kubernetes/installation/containerd.md
@@ -92,7 +92,7 @@ cat <<EOF >/etc/cni/net.d/10-my.conf
     "ipMasq": true,
     "ipam": {
         "type": "host-local",
-        "subnet": "10.0.1.0/16",
+        "subnet": "172.16.0.0/12",
         "routes": [
             { "dst": "0.0.0.0/0" }
         ],
diff --git a/kubernetes/mantaince/calico.md b/kubernetes/mantaince/calico.md
index e69de29..8417977 100644
--- a/kubernetes/mantaince/calico.md
+++ b/kubernetes/mantaince/calico.md
@@ -0,0 +1,7 @@
+# Calico
+
+多个网卡时，要添加以下信息来指定bgp绑定的网卡，否则会出现pod不通
+```yaml
+            - name: IP_AUTODETECTION_METHOD
+              value: cidr=10.0.0.0/24
+```
\ No newline at end of file