背景

最近做公司项目的客户私有化部署方案的时候,验收一键部署脚本发现所有pod都是pending

排查

查看pod状态

kubectl describe pod -n myns mypod

显示

  Warning  NetworkNotReady   24m (x302 over 34m)  kubelet            network is not ready: container runtime network not ready: NetworkReady=false reason:NetworkPluginNotReady message:docker: network plugin is not ready: cni config uninitialized

查看kubelet日志

journalctl -u kubelet

发现

Apr 16 23:28:28 VM-128-221-centos kubelet[17052]: I0416 23:28:28.564264   17052 cni.go:205] "Error validating CNI config list" configList="{\n  \"name\": \"cbr0\",\n  \"cniVersion\": \"0.3.1\",\n  \"plugins\": [\n    {\n      \"type\": \"flannel\",\n      \"delegate\": {\n        \"hairpinMode\": true,\n        \"isDefaultGateway\": true\n      }\n    },\n    {\n      \"type\": \"portmap\",\n      \"capabilities\": {\n        \"portMappings\": true\n      }\n    }\n  ]\n}\n" err="[failed to find plugin \"flannel\" in path [/opt/cni/bin] failed to find plugin \"portmap\" in path [/opt/cni/bin]]"

查看/opt/cni/bin/

ls /opt/cni/bin/

正常显示如下

image.png

实际显示

image.png

解决方式

cat <<EOF > /etc/yum.repos.d/kubernetes.repo
[kubernetes]
name=Kubernetes
baseurl=http://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el7-x86_64
enabled=1
gpgcheck=0
repo_gpgcheck=0
gpgkey=http://mirrors.aliyun.com/kubernetes/yum/doc/yum-key.gpg
       http://mirrors.aliyun.com/kubernetes/yum/doc/rpm-package-key.gpg
EOF

yum install kubernetes-cni -y