# 1. 確認現在的 node ~$ k get no NAME STATUS ROLES AGE VERSION k8s14-master01-u1604 Ready master 10d v1.14.0 k8s14-worker02-u1604 Ready <none> 4m31s v1.14.0 k8s14-worker03-u1604 Ready <none> 32m v1.14.0 k8s14-worker04-u1604 Ready <none> 24m v1.14.0
## 檢查有哪些 pod 跑在 worker02 ~$ k get po -o wide | grep worker02 kube-proxy-zx6fn 1/1 Running 0 3m53s 192.168.2.16 k8s14-worker02-u1604 weave-net-fkb5w 2/2 Running 1 3m53s 192.168.2.16 k8s14-worker02-u1604
## 2. 到 worker02 裡面，檢查 docker ps root@k8s14-worker02-u1604:~# docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES 239c836beb6a 047e0878ff14 "/tini -- /usr/local…" 3 minutes ago Up 3 minutes k8s_rook-ceph-agent_rook-ceph-agent-bsgqk_rook-ceph_71d9fc74-605e-11e9-a972-92cde7b04430_1 fe68d8f88ed1 1f394ae9e226 "/home/weave/launch.…" 3 minutes ago Up 3 minutes k8s_weave_weave-net-fkb5w_kube-system_6bd4a2fa-605e-11e9-a972-92cde7b04430_1 ae00e498728f 789b7f496034 "/usr/bin/weave-npc" 4 minutes ago Up 4 minutes k8s_weave-npc_weave-net-fkb5w_kube-system_6bd4a2fa-605e-11e9-a972-92cde7b04430_0 ... 略 ...
## 2-1. 檢查 node ~$ k get no NAME STATUS ROLES AGE VERSION k8s14-master01-u1604 Ready master 10d v1.14.0 k8s14-worker03-u1604 Ready <none> 42m v1.14.0 k8s14-worker04-u1604 Ready <none> 33m v1.14.0
## 2-2. 到 worker02 裡執行 kubeadm reset 清除資料, 如下: root@k8s14-worker02-u1604:~# 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 W0416 23:57:25.138327 18457 reset.go:234] [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 stateful directories: [/var/lib/kubelet /etc/cni/net.d /var/lib/dockershim /var/run/kubernetes] [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]
The reset process does not reset or clean up iptables rules or IPVS tables. If you wish to reset iptables, you must do so manually. For example: iptables -F && iptables -t nat -F && iptables -t mangle -F && iptables -X
If your cluster was setup to utilize IPVS, run ipvsadm --clear (or similar) to reset your systems IPVS tables.
### (optional) 到 worker02 機器裡面看看 docker ps, container 很快就刪完了，沒有 container 再跑了 root@k8s14-worker02-u1604:~# docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES bf7310c8d3c6 d9ece03f45e7 "/home/weave/entrypo…" 9 minutes ago Up 9 minutes k8s_scope-agent_weave-scope-agent-wsmd2_weave_6bd48236-605e-11e9-a972-92cde7b04430_0 79d7b777a525 k8s.gcr.io/pause:3.1 "/pause" 9 minutes ago Up 9 minutes k8s_POD_weave-scope-agent-wsmd2_weave_6bd48236-605e-11e9-a972-92cde7b04430_0
root@k8s14-worker02-u1604:~# docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES root@k8s14-worker02-u1604:~#
### (optional) docker images 還在 root@k8s14-worker02-u1604:~# docker images REPOSITORY TAG IMAGE ID CREATED SIZE rook/ceph master 047e0878ff14 3 days ago 698MB wordpress latest 837092bc87de 5 days ago 421MB istio/proxyv2 1.1.2 c7fb421f087e 12 days ago 378MB ... 略 ...
