k8s, etcd集羣搭建報報錯：request cluster ID mismatch (got

目前在學習K8S, etcd 集羣搭建，啓動時候報錯：

master-16 etcd[25461]: request cluster ID mismatch (got bdd7c7c32bde1208 want 698851d67fea3c17)
master-16 etcd[25461]: request cluster ID mismatch (got bdd7c7c32bde1208 want 698851d67fea3c17)
master-16 etcd[25461]: request cluster ID mismatch (got bdd7c7c32bde1208 want 698851d67fea3c17)
master-16 etcd[25461]: request cluster ID mismatch (got bdd7c7c32bde1208 want 698851d67fea3c17)
master-16 etcd[25461]: request cluster ID mismatch (got bdd7c7c32bde1208 want 698851d67fea3c17)
master-16 etcd[25461]: request cluster ID mismatch (got bdd7c7c32bde1208 want 698851d67fea3c17)
master-16 etcd[25461]: request cluster ID mismatch (got bdd7c7c32bde1208 want 698851d67fea3c17)
master-16 etcd[25461]: request cluster ID mismatch (got bdd7c7c32bde1208 want 698851d67fea3c17)
master-16 etcd[25461]: request cluster ID mismatch (got bdd7c7c32bde1208 want 698851d67fea3c17)
master-16 etcd[25461]: request cluster ID mismatch (got bdd7c7c32bde1208 want 698851d67fea3c17)

檢查啓動service 和配置etcd.conf ,問題應該沒有出在配置上。

解決辦法：刪除了etcd集羣全部節點中的--data_dir的內容
分析： 由於集羣搭建過程，單獨啓動過單一etcd,作爲測試驗證，集羣內第一次啓動其餘etcd服務時候，是經過發現服務引導的，因此須要刪除舊的成員信息
參考：One of the member was bootstrapped via discovery service. You must remove the previous data-dir to clean up the member information. Or the member will ignore the new configuration and start with the old configuration. That is why you see the mismatch.

k8s 推薦學習博客：https://jimmysong.io/kubernetes-handbook