什麼是停止 mysql docker 容器的安全方法？

我使用 Docker 執行 mysql 容器。我開始喜歡

sudo docker -d --name mysql -p 3306:3306 -v /var/lib/mysql:/var/lib/mysql mysql_image 

我懷疑通過停止 docker 來停止 mysql 是不安全的。我錯了嗎？

sudo docker stop mysql

首先在容器內停止mysql是否更安全？

sudo docker exec mysql /usr/bin/mysqladmin shutdown

看起來很安全，來自文件：

容器內的主程序將收到 SIGTERM，並在寬限期後收到 SIGKILL。

因此，如果主程序是 mysqld，它將有一個不錯的機會刷新所有內容。

似乎在不關閉 MySQL 的情況下停止 docker 容器會創建損壞的 MySQL 數據量。因此，有必要在停止容器之前執行 MySQL 關閉，以便 MySQL 將所有更改刷新到磁碟。

這是在卷上啟動 mysql 的日誌，從容器創建，由 docker 停止。注意 XA 崩潰恢復步驟是否存在。

2021-05-18 06:34:51+00:00 [Note] [Entrypoint]: Entrypoint script for MySQL             
Server 8.0.25-1debian10 started.
2021-05-18 06:34:54+00:00 [Note] [Entrypoint]: Switching to dedicated user 
'mysql'
2021-05-18 06:34:54+00:00 [Note] [Entrypoint]: Entrypoint script for MySQL 
Server 8.0.25-1debian10 started.
2021-05-18T06:34:54.844455Z 0 [System] [MY-010116] [Server] /usr/sbin/mysqld 
(mysqld 8.0.25) starting as process 1
2021-05-18T06:34:54.887402Z 1 [System] [MY-013576] [InnoDB] InnoDB 
initialization has started.
2021-05-18T06:35:00.523370Z 1 [System] [MY-013577] [InnoDB] InnoDB 
initialization has ended.
2021-05-18T06:35:11.094092Z 0 [System] [MY-011323] [Server] X Plugin ready for 
connections. Bind-address: '::' port: 33060, socket: 
/var/run/mysqld/mysqlx.sock
2021-05-18T06:35:11.181732Z 0 [System] [MY-010229] [Server] Starting XA crash 
recovery...
2021-05-18T06:35:11.198947Z 0 [System] [MY-010232] [Server] XA crash recovery 
finished.
2021-05-18T06:35:11.375917Z 0 [Warning] [MY-010068] [Server] CA certificate 
ca.pem is self signed.
2021-05-18T06:35:11.376529Z 0 [System] [MY-013602] [Server] Channel mysql_main 
configured to support TLS. Encrypted connections are now supported for this 
channel.
2021-05-18T06:35:11.397202Z 0 [Warning] [MY-011810] [Server] Insecure 
configuration for --pid-file: Location '/var/run/mysqld' in the path is 
accessible to all OS users. Consider choosing a different directory.
2021-05-18T06:35:11.628776Z 0 [System] [MY-010931] [Server] /usr/sbin/mysqld: 
ready for connections. Version: '8.0.25'  socket: 
'/var/run/mysqld/mysqld.sock'  port: 3306  MySQL Community Server - GPL.

使用時

docker exec tu-live-db /usr/bin/mysqladmin -uroot -proot shutdown

在殺死一個容器之前，XA 崩潰恢復沒有啟動，並且數據量對於下一個容器啟動是有效的

2021-05-18 06:36:44+00:00 [Note] [Entrypoint]: Entrypoint script for MySQL 
Server 8.0.25-1debian10 started.
2021-05-18 06:36:47+00:00 [Note] [Entrypoint]: Switching to dedicated user 
'mysql'
2021-05-18 06:36:47+00:00 [Note] [Entrypoint]: Entrypoint script for MySQL 
Server 8.0.25-1debian10 started.
2021-05-18T06:36:48.040045Z 0 [System] [MY-010116] [Server] /usr/sbin/mysqld 
(mysqld 8.0.25) starting as process 1
2021-05-18T06:36:48.082740Z 1 [System] [MY-013576] [InnoDB] InnoDB 
initialization has started.
2021-05-18T06:36:53.426493Z 1 [System] [MY-013577] [InnoDB] InnoDB 
initialization has ended.
2021-05-18T06:36:57.611953Z 0 [System] [MY-011323] [Server] X Plugin ready for 
connections. Bind-address: '::' port: 33060, socket: 
/var/run/mysqld/mysqlx.sock
2021-05-18T06:36:57.827561Z 0 [Warning] [MY-010068] [Server] CA certificate 
ca.pem is self signed.
2021-05-18T06:36:57.828060Z 0 [System] [MY-013602] [Server] Channel mysql_main 
configured to support TLS. Encrypted connections are now supported for this 
channel.
2021-05-18T06:36:57.845291Z 0 [Warning] [MY-011810] [Server] Insecure 
configuration for --pid-file: Location '/var/run/mysqld' in the path is 
accessible to all OS users. Consider choosing a different directory.
2021-05-18T06:36:58.014550Z 0 [System] [MY-010931] [Server] /usr/sbin/mysqld: 
ready for connections. Version: '8.0.25'  socket: 
'/var/run/mysqld/mysqld.sock'  port: 3306  MySQL Community Server - GPL.

引用自：https://serverfault.com/questions/661691