部署etcd錯誤總結
1、conflicting environment variable "ETCD_NAME" is shadowed by corresponding command-line flag (either unset environment variable or disable flag)
原因：ETCD3.4版本會自動讀取環境變量的參數，所以EnvironmentFile文件中有的參數，不需要再次在ExecStart啟動參數中添加，二選一，如同時配置，會觸發以下類似報錯
etcd: conflicting environment variable "ETCD_NAME" is shadowed by corresponding command-line flag (either unset environment variable or disable flag)
解決：剔除ExecStart中和配置文件重復的內容即可
2、cannot access data directory: directory "/application/kubernetes/data/","drwxr-xr-x" exist without desired file permission "-rwx------".
解決：將權限設置為700即可
3、Failed at step CHDIR spawning /usr/bin/etcd: No such file or directory
原因：etcd.service服務配置文件中設置的工作目錄WorkingDirectory=/var/lib/etcd/必須存在，否則會報以上錯誤