k8s集群删除和添加node节点-创新互联

  在已有k8s云平台中误删除node节点，然后将误删除的节点添加进集群中。如果是一台新服务器必须还要安装docker和k8s基础组件。

企业建站必须是能够以充分展现企业形象为主要目的，是企业文化与产品对外扩展宣传的重要窗口，一个合格的网站不仅仅能为公司带来巨大的互联网上的收集和信息发布平台，创新互联面向各种领域：成都地磅秤等成都网站设计、营销型网站建设解决方案、网站设计等建站排名服务。

1.查看节点数和删除node节点（master节点）

[root@k8s01 ~]# kubectl  get nodes
NAME    STATUS   ROLES    AGE   VERSION
k8s01   Ready    master   40d   v1.15.3
k8s02   Ready       40d   v1.15.3
k8s03   Ready       40d   v1.15.3

[root@k8s01 ~]# kubectl  delete nodes k8s03
node "k8s03" deleted
[root@k8s01 ~]# kubectl  get nodes
NAME    STATUS   ROLES    AGE   VERSION
k8s01   Ready    master   40d   v1.15.3
k8s02   Ready       40d   v1.15.3
[root@k8s01 ~]#

2.在被删除的node节点清空集群信息

[root@k8s03 ~]# kubeadm reset
[reset] WARNING: Changes made to this host by 'kubeadm init' or 'kubeadm join' will be reverted.
[reset] Are you sure you want to proceed? [y/N]: y
[preflight] Running pre-flight checks
W1017 15:43:41.491522    3010 removeetcdmember.go:79] [reset] No kubeadm config, using etcd pod spec to get data directory
[reset] No etcd config found. Assuming external etcd
[reset] Please, manually reset etcd to prevent further issues
[reset] Stopping the kubelet service
[reset] Unmounting mounted directories in "/var/lib/kubelet"
[reset] Deleting contents of config directories: [/etc/kubernetes/manifests /etc/kubernetes/pki]
[reset] Deleting files: [/etc/kubernetes/admin.conf /etc/kubernetes/kubelet.conf /etc/kubernetes/bootstrap-kubelet.conf /etc/kubernetes/controller-manager.conf /etc/kubernetes/scheduler.conf]
[reset] Deleting contents of stateful directories: [/var/lib/kubelet /etc/cni/net.d /var/lib/dockershim /var/run/kubernetes]
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