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
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