Kubernetes在master获取node显示状态NotReady排查

　　在Kubernetes的maste获取node信息提示NotReady

?

1 2 3 4

# kubectl get node NAME           STATUS   ROLES    AGE   VERSION 192.168.1.65   NotReady    <none>   9d    v1.13.4 192.168.1.66   Ready    <none>   9d    v1.13.4

 　　原因node端kubelet启动错误日志显示

?

1	Calling handler.OnEndpointsUpda

 　　node端docker也启动失败提示文件不存在

?

1	docker.service failed to run 'start' task: No such file or directory

 

 

 　　查看docker的systemctl配置文件

?

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24

# cat /usr/lib/systemd/system/docker.service [Unit] Description=Docker Application Container Engine Documentation=https://docs.docker.com After=network-online.target firewalld.service Wants=network-online.target    [Service] Type=notify EnvironmentFile=/run/flannel/subnet.env ExecStart=/usr/bin/dockerd $DOCKER_NETWORK_OPTIONS ExecReload=/bin/kill -s HUP $MAINPID LimitNOFILE=infinity LimitNPROC=infinity LimitCORE=infinity TimeoutStartSec=0 Delegate=yes KillMode=process Restart=on-failure StartLimitBurst=3 StartLimitInterval=60s    [Install] WantedBy=multi-user.target

 　　是环境变量文件subnet.env文件不存在原因是网络flanneld没启动，启动即可

?

1 2	systemctl start flanneld systemctl enable flanneld

 　　NotReady原因不是因为docker未启动报错信息如下

?

1	Setting node annotation to enable volume controller attach/detach

 　　原因，证书问题，移动node下证书

?

1	/opt/kubernetes/ssl

 　　重启kubelet

?

1 2	systemctl daemon-reload systemctl restart kubelet

 　　PS：移动时这个证书不要移动

?

1	kubelet-client-2020-03-13-17-19-22.pem

 　　其实证书kubelet-client-current.pem是软链接该证书的