k8s故障排查componentstatus-Rancher污点【显哥出品，必为精品】

问题描述

[root@master ~]# kubectl get componentstatus
Warning: v1 ComponentStatus is deprecated in v1.19+
NAME                 STATUS      MESSAGE                                                                                       ERROR
controller-manager   Unhealthy   Get "http://127.0.0.1:10252/healthz": dial tcp 127.0.0.1:10252: connect: connection refused   
scheduler            Unhealthy   Get "http://127.0.0.1:10251/healthz": dial tcp 127.0.0.1:10251: connect: connection refused   
etcd-0               Healthy     {"health":"true"}

解决方法

<a href="https://www.lixian.fun/wp-content/uploads/2022/04/2022041005071510.png"><img src="https://www.lixian.fun/wp-content/uploads/2022/04/2022041005071510.png" alt="" class="aligncenter size-full wp-image-5110" /></a>
#修改上面对应的文件，哪个模块不健康就修改哪个
#出现这种情况是kube-controller-manager.yaml和kube-scheduler.yaml设置的默认端口是0，在配置文件中注释掉“- --port=0”并重启服务就可以了。每台master节点都要执行操作
vim /etc/kubernetes/manifests/kube-scheduler.yaml
#--port=0

正常

[root@master ~]# kubectl get componentstatus
Warning: v1 ComponentStatus is deprecated in v1.19+
NAME                 STATUS    MESSAGE             ERROR
controller-manager   Healthy   ok                  
scheduler            Healthy   ok                  
etcd-0               Healthy   {"health":"true"}