# rke2 worker 相同名稱註冊問題 * 情境: 如果想要刪除 w2 節點，並且在使用同一個節點名稱註冊會有以下問題。 ``` rancher@w2:~> sudo journalctl -u rke2-agent.service Aug 09 15:28:49 w2 rke2[2856]: time="2023-08-09T15:28:49+08:00" level=info msg="Waiting to retrieve agent configuration; server is not ready: Node password rejected, duplicate hostname or contents of '/etc/rancher/node/password' may not match server node-passwd entry, try enabling a unique node name with the --with-node-id flag" Aug 09 15:28:54 w2 rke2[2856]: time="2023-08-09T15:28:54+08:00" level=info msg="Waiting to retrieve agent configuration; server is not ready: Node password rejected, duplicate hostname or contents of '/etc/rancher/node/password' may not match server node-passwd entry, try enabling a unique node name with the --with-node-id flag" ``` * 原因是因為 w2 註冊時用的 secret 還是使用同一個，因此 k8s 預設就會拿這個 secret 來做註冊，註冊就會有問題 ``` rancher@m1:~> kubectl -n kube-system get secret w1.node-password.rke2 Opaque 1 68d w2.node-password.rke2 Opaque 1 68d w3.node-password.rke2 Opaque 1 68d ``` * 把舊的 secret 刪掉後他就會自動產生一個現在 w2 註冊的 secret ``` rancher@m1:~> kubectl -n kube-system delete secrets w2.node-password.rke2 secret "w2.node-password.rke2" deleted $ kubectl -n kube-system get secret w1.node-password.rke2 Opaque 1 68d w2.node-password.rke2 Opaque 1 14s w3.node-password.rke2 Opaque 1 68d ``` * 最後就可以使用相同名稱順利註冊完成拉 ``` rancher@m1:~> kubectl get nodes NAME STATUS ROLES AGE VERSION m1 Ready control-plane,etcd,master 68d v1.26.6+rke2r1 m2 Ready control-plane,etcd,master 68d v1.26.6+rke2r1 m3 Ready control-plane,etcd,master 68d v1.26.6+rke2r1 w1 Ready worker 68d v1.26.6+rke2r1 w2 Ready worker 18m v1.26.6+rke2r1 w3 Ready worker 68d v1.26.6+rke2r1 ``` ###### tags: `trouble`