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  • 解决linux(centos7)重新安装mysql systemctl start mysqld.service时报错

    重新安装mysql时,运行

    systemctl status mysqld.service
    报错。

    [root@test-dcruxue ~]# systemctl start mysqld.service
    Job for mysqld.service failed because the control process exited with error code. See "systemctl status mysqld.service" and "journalctl -xe" for details.
    查看mysql服务状态

    [root@test-dcruxue ~]# systemctl status mysqld.service
    ● mysqld.service - MySQL Server
    Loaded: loaded (/usr/lib/systemd/system/mysqld.service; enabled; vendor preset: disabled)
    Active: failed (Result: exit-code) since Tue 2018-07-17 16:14:22 CST; 8min ago
    Docs: man:mysqld(8)
    http://dev.mysql.com/doc/refman/en/using-systemd.html
    Process: 17451 ExecStart=/usr/sbin/mysqld --daemonize --pid-file=/var/run/mysqld/mysqld.pid $MYSQLD_OPTS (code=exited, status=1/FAILURE)
    Process: 17376 ExecStartPre=/usr/bin/mysqld_pre_systemd (code=exited, status=0/SUCCESS)
    Main PID: 16428 (code=exited, status=1/FAILURE)

    Jul 17 16:13:41 test-dcruxue systemd[1]: Starting MySQL Server...
    Jul 17 16:14:20 test-dcruxue mysqld[17451]: Initialization of mysqld failed: 0
    Jul 17 16:14:20 test-dcruxue systemd[1]: mysqld.service: control process exited, code=exited status=1
    Jul 17 16:14:22 test-dcruxue systemd[1]: Failed to start MySQL Server.
    Jul 17 16:14:22 test-dcruxue systemd[1]: Unit mysqld.service entered failed state.
    Jul 17 16:14:22 test-dcruxue systemd[1]: mysqld.service failed.
    无果;

    遂想到查看日志:cat /var/log/mysqld.log

    2018-07-17T08:23:01.745601Z 0 [ERROR] Can't start server: Bind on TCP/IP port: Address already in use
    2018-07-17T08:23:01.745607Z 0 [ERROR] Do you already have another mysqld server running on port: 3306 ?
    2018-07-17T08:23:01.745619Z 0 [ERROR] Aborting
    发现3306端口被占用

    [root@test-dcruxue ~]# ps aux|grep mysql
    root 9861 0.0 0.0 113252 1600 ? S 14:52 0:00 /bin/sh /usr/bin/mysqld_safe --skip-grant-table
    mysql 10009 0.0 5.6 1585376 457120 ? Sl 14:52 0:03 /usr/sbin/mysqld --basedir=/usr --datadir=/var/lib/mysql --plugin-dir=/usr/lib64/mysql/plugin --user=mysql --skip-grant-table --log-error=/var/log/mysqld.log --pid-file=/var/run/mysqld/mysqld.pid --socket=/var/lib/mysql/mysql.sock
    root 17563 0.0 0.0 112648 956 pts/2 R+ 16:32 0:00 grep --color=auto mysql
    然后杀掉进程

    [root@test-dcruxue ~]# kill -9 10009
    就ok了
    ————————————————

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  • 原文地址:https://www.cnblogs.com/shujuyr/p/13080722.html
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