docker容器不会以Mysql docker image开头

Question

我将docker容器与mysql官方映像配合使用，以创建11个以上的数据库容器（container1到container11）。设置后，所有容器都可以正常运行，直到container9。在container10，它仅启动约1分钟，然后再次停止。使用码头工人日志来检查容器，但我什么也没看到。停止container9，然后重新启动container10。它再次运行正常。这种情况似乎仅在我有9个mysql容器并尝试提高第10个容器时发生。如果我停下其中一个，然后再抬起。那就没有问题了。是虫子吗？还是我错过了docker bridge的一些设置？

root@ec8dcb82f64d:/dev/shm# docker restart f4801b57c4cc
f4801b57c4cc
root@ec8dcb82f64d:/dev/shm# docker ps -a | grep f4801b57c4cc
f4801b57c4cc        mysql/mysql-server:5.7             "/entrypoint.sh my..."   2 weeks ago         Exited (1) 3 seconds ago                                                             db
root@ec8dcb82f64d:/dev/shm# docker logs f4801b57c4cc
Initializing database
Database initialized
MySQL init process in progress...
Warning: Unable to load '/usr/share/zoneinfo/iso3166.tab' as time zone. Skipping it.
Warning: Unable to load '/usr/share/zoneinfo/zone.tab' as time zone. Skipping it.
mysql: [Warning] Using a password on the command line interface can be insecure.
mysql: [Warning] Using a password on the command line interface can be insecure.
mysql: [Warning] Using a password on the command line interface can be insecure.
mysql: [Warning] Using a password on the command line interface can be insecure.

/entrypoint.sh: ignoring /docker-entrypoint-initdb.d/*


MySQL init process done. Ready for start up.

root@ec8dcb82f64d:/dev/shm#

Answer 1

即使我不太了解会发生什么，我也想在一周后找到解决方案。以下是我尝试过的内容，到目前为止，我最多可以启动mysql容器达20个。

1：尝试创建一个虚拟的mysql容器进行测试

$ docker run -e MYSQL_ROOT_PASSWORD=password mysql
Unable to find image 'mysql:latest' locally
latest: Pulling from library/mysql
...
Initializing database
2017-08-09T17:58:30.034595Z 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details).
2017-08-09T17:58:30.039274Z 0 [Warning] InnoDB: io_setup() failed with EAGAIN. Will make 5 attempts before giving up.
2017-08-09T17:58:30.039294Z 0 [Warning] InnoDB: io_setup() attempt 1.
2017-08-09T17:58:30.539495Z 0 [Warning] InnoDB: io_setup() attempt 2.
2017-08-09T17:58:31.039701Z 0 [Warning] InnoDB: io_setup() attempt 3.
2017-08-09T17:58:31.539902Z 0 [Warning] InnoDB: io_setup() attempt 4.
2017-08-09T17:58:32.040115Z 0 [Warning] InnoDB: io_setup() attempt 5.
2017-08-09T17:58:32.540330Z 0 [ERROR] InnoDB: io_setup() failed with EAGAIN after 5 attempts.
2017-08-09T17:58:32.540378Z 0 [ERROR] InnoDB: Cannot initialize AIO sub-system
2017-08-09T17:58:32.540390Z 0 [ERROR] InnoDB: Plugin initialization aborted with error Generic error
2017-08-09T17:58:32.540401Z 0 [ERROR] Plugin 'InnoDB' init function returned error.
2017-08-09T17:58:32.540408Z 0 [ERROR] Plugin 'InnoDB' registration as a STORAGE ENGINE failed.
2017-08-09T17:58:32.540412Z 0 [ERROR] Failed to initialize plugins.
2017-08-09T17:58:32.540415Z 0 [ERROR] Aborting

并因EAGAIN导致io_setup（）的错误代码失败

2：检查aio-max-nr的当前值

$ sysctl fs.aio-max-nr
fs.aio-max-nr = 65536

3：将aio-max-nr的值增加到2097152

$ sudo sysctl -w fs.aio-max-nr=2097152

3：启动mysql服务

4：尝试创建更多的mysql-containers并启动没有问题的原始mysql-containers