Kubernetes 节点Node 一直处于 NotReady状态

配置了一个Kubernetes集群做试验。虚拟机移动后一个节点一直处于Not Ready 状态。重启后仍为恢复。查看Kubernetes节点状态kubectl get node -o wide显示如下NAMESTATUSROLESAGEVERSIONINTERNAL-IPEXTERNAL-IPOS-I...

时间牧人

6575人浏览 · 2020-05-08 07:42:25

时间牧人 · 2020-05-08 07:42:25 发布

配置了一个Kubernetes集群做试验。虚拟机移动后一个节点一直处于Not Ready 状态。重启后仍为恢复。
查看Kubernetes节点状态

kubectl get node -o wide

显示如下

NAME                   STATUS     ROLES    AGE   VERSION   INTERNAL-IP       EXTERNAL-IP   OS-IMAGE                KERNEL-VERSION                CONTAINER-RUNTIME
vddall-k8s-master-01   Ready      <none>   16d   v1.14.2   192.168.127.115   <none>        CentOS Linux 7 (Core)   4.4.219-1.el7.elrepo.x86_64   docker://18.9.6
vddall-k8s-node-01     NotReady   <none>   16d   v1.14.2   192.168.127.116   <none>        CentOS Linux 7 (Core)   4.4.219-1.el7.elrepo.x86_64   docker://18.9.6
vddall-k8s-node-02     Ready      <none>   16d   v1.14.2   192.168.127.117   <none>        CentOS Linux 7 (Core)   4.4.219-1.el7.elrepo.x86_64   docker://18.9.6

1. 查看 kubelet状态

systemctl statsu kubelet

显示如下

kubelet.service - Kubernetes Kubelet
   Loaded: loaded (/etc/systemd/system/kubelet.service; enabled; vendor preset: disabled)
   Active: activating (auto-restart) (Result: exit-code) since Fri 2020-05-08 07:33:35 CST; 3s ago
   ause-amd64:3.1 --image-pull-progress-deadline=15m --volume-plugin-dir=/data/k8s/k8s/kubelet/kubelet-plugins/volume/exec/ --logtostderr=true --v=2 (code=exited, status=255)

2. journalctl -u 查看系统日志

journalctl -u kubelet

failed to run Kubelet: Running with swap on is not supported, please disable swap! or set --fail-swap-on flag to false.
 kubelet.service: main process exited, code=exited, status=255/n/a

关闭Swap

swapoff -a 
sed -i '/ swap / s/^\(.*\)$/#\1/g' /etc/fstab

在查看kubelet状态

systemctl statsu kubele

● kubelet.service - Kubernetes Kubelet
   Loaded: loaded (/etc/systemd/system/kubelet.service; enabled; vendor preset: disabled)
   Active: active (running) since Fri 2020-05-08 07:40:03 CST; 14s ago

4.再查看Kubernetes节点状态，恢复正常

kubectl get node -o wide
NAME                   STATUS   ROLES    AGE   VERSION   INTERNAL-IP       EXTERNAL-IP   OS-IMAGE                KERNEL-VERSION                CONTAINER-RUNTIME
vddall-k8s-master-01   Ready    <none>   16d   v1.14.2   192.168.127.115   <none>        CentOS Linux 7 (Core)   4.4.219-1.el7.elrepo.x86_64   docker://18.9.6
vddall-k8s-node-01     Ready    <none>   16d   v1.14.2   192.168.127.116   <none>        CentOS Linux 7 (Core)   4.4.219-1.el7.elrepo.x86_64   docker://18.9.6
vddall-k8s-node-02     Ready    <none>   16d   v1.14.2   192.168.127.117   <none>        CentOS Linux 7 (Core)   4.4.219-1.el7.elrepo.x86_64   docker://18.9.6