1、现象：
Warning FailedCreatePodSandBox 4m57s kubelet Failed to create pod sandbox: rpc error: code = Unknown desc = failed to setup network for sandbox "32a15f820bde044b8790a1b14bc78cad06aaadf1baf2606e535a78639f9000be": plugin type="calico" failed (add): error getting ClusterInformation: Get "https://[10.96.0.1]:443/apis/crd.projectcalico.org/v1/clusterinformations/default": x509: certificate signed by unknown authority (possibly because of "crypto/rsa: verification error" while trying to verify candidate authority certificate "kubernetes")
2、分析原因
看事件信息报 calico x509 认证错误，原因是缺少了calico-kube-controllers 组件做认证分发
3、解决方案
部署calico-kube-controllers 组件即可
