K8S插件Metrics Server安装

背景

自建K8S集群，版本v1.21.2

安装

wget https://github.com/kubernetes-sigs/metrics-server/releases/latest/download/components.yaml
kubectl apply -f components.yaml

可能问题

• metrics-server pod无法启动，出现日志unable to fully collect metrics: ... x509: cannot validate certificate for because ... it doesn't contain any IP SANs ...
  解决方法：在metrics-server中添加--kubelet-insecure-tls参数跳过证书校验

vim components.yaml
kind: Deployment
spec:
  template:
    spec:
      containers:
      - args:
        - --kubelet-insecure-tls

kubectl apply -f components.yaml