rancher证书过期导致k8s集群异常

rancher版本是2.5.12。
本文参考 https://blog.csdn.net/qq_54738879/article/details/138723820

1. 错误

time="2021-12-29T08:27:32.616638402Z" level=info msg="Waiting for master node  startup: resource name may not be empty"
2021-12-29 08:27:32.985756 I | http: TLS handshake error from 127.0.0.1:35568: remote error: tls: bad certificate
time="2021-12-29T08:27:32.987398748Z" level=error msg="server https://127.0.0.1:6443/cacerts is not trusted: Get https://127.0.0.1:6443/cacerts: x509: certificate has expired or is not yet valid"
2021-12-29 08:27:32.987447 I | http: TLS handshake error from 127.0.0.1:35570: remote error: tls: bad certificate
time="2021-12-29T08:27:33.620623487Z" level=info msg="Waiting for master node  startup: resource name may not be empty"
2021/12/29 08:27:34 [INFO] Waiting for server to become available: Get "https://127.0.0.1:6443/version?timeout=15m0s": x509: certificate has expired or is not yet valid: current time 2021-12-29T08:27:34Z is after 2021-12-28T06:35:39

2. 进入rancher容器

docker exec -it rancher /bin/bash

执行命令

kubectl --insecure-skip-tls-verify -n kube-system delete secrets k3s-serving
kubectl --insecure-skip-tls-verify delete secret serving-cert -n cattle-system
rm -f /var/lib/rancher/k3s/server/tls/dynamic-cert.json

3. 重启

docker restart rancher