啓動時MySQL問題

Question

你能幫我嗎？

當服務mysqld_multi的啓動開機，我得到這個錯誤：

161118 13:18:57 mysqld_safe Starting mysqld daemon with databases from /var/lib/mysql/monitor

161118 13:18:58 [Note] /usr/sbin/mysqld (mysqld 5.5.48-MariaDB) starting as process 3076 ...

161118 13:18:58 InnoDB: Mutexes and rw_locks use GCC atomic builtins

161118 13:18:58 InnoDB: Compressed tables use zlib 1.2.3

161118 13:18:58 InnoDB: Using Linux native AIO

161118 13:18:58 InnoDB: Initializing buffer pool, size = 128.0M

161118 13:18:58 InnoDB: Completed initialization of buffer pool

161118 13:18:58 InnoDB: highest supported file format is Barracuda.

161118 13:18:58 InnoDB: Waiting for the background threads to start

161118 13:18:59 Percona XtraDB (http://www.percona.com) 5.5.47-MariaDB-37.7 started; log sequence number 7008339

161118 13:18:59 [Note] Plugin 'FEDERATED' is disabled.

161118 13:18:59 [Note] Plugin 'FEEDBACK' is disabled.

161118 13:18:59 [Note] Server socket created on IP: '0.0.0.0'.

161118 13:18:59 [ERROR] Can't start server: Bind on TCP/IP port. Got error: 13: Permission denied

161118 13:18:59 [ERROR] Do you already have another mysqld server running on port: 13306 ?

161118 13:18:59 [ERROR] Aborting

161118 13:18:59 InnoDB: Starting shutdown...

161118 13:19:00 InnoDB: Shutdown completed; log sequence number 7008339

161118 13:19:00 [Note] /usr/sbin/mysqld: Shutdown complete

161118 13:19:00 mysqld_safe mysqld from pid file /var/lib/mysql/monitor/mysqld002.pid ended

Once the server is up if I do "service mysqld_multi start" as root user I get this output and MYSQL begin to work:

161118 13:25:11 mysqld_safe Starting mysqld daemon with databases from /var/lib/mysql/monitor

161118 13:25:11 [Note] /usr/sbin/mysqld (mysqld 5.5.48-MariaDB) starting as process 3876 ...

161118 13:25:11 InnoDB: Mutexes and rw_locks use GCC atomic builtins

161118 13:25:11 InnoDB: Compressed tables use zlib 1.2.3

161118 13:25:11 InnoDB: Using Linux native AIO

161118 13:25:11 InnoDB: Initializing buffer pool, size = 128.0M

161118 13:25:11 InnoDB: Completed initialization of buffer pool

161118 13:25:11 InnoDB: highest supported file format is Barracuda.

161118 13:25:11 InnoDB: Waiting for the background threads to start

161118 13:25:12 Percona XtraDB (http://www.percona.com) 5.5.47-MariaDB-37.7 started; log sequence number 7008339

161118 13:25:12 [Note] Plugin 'FEDERATED' is disabled.

161118 13:25:12 [Note] Plugin 'FEEDBACK' is disabled.

161118 13:25:12 [Note] Server socket created on IP: '0.0.0.0'.

161118 13:25:12 [Note] Event Scheduler: Loaded 0 events

161118 13:25:12 [Note] /usr/sbin/mysqld: ready for connections.

Version: '5.5.48-MariaDB' socket: '/var/lib/mysql/monitor/mysqld002.sock' port: 13306 MariaDB Server

爲什麼????????

Answer 1

問題已解決。

問題在於SELinux的狀態。 將參數SELINUX改爲「允許」而不是「強制」（在文件/ etc/sysconfig/selinux中），服務在啓動時開始OK。

就是這樣。