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  • mysql的错误:The server quit without updating PID file /usr/local/mysql/data/door.pid).

    mysql错误解决:

    先 参考:http://www.jb51.net/article/48625.htm

    参考第四条:

    mysql在启动时没有指定配置文件时会使用/etc/my.cnf配置文件,请打开这个文件查看在[mysqld]节下有没有指定数据目录(datadir)。

    mysql版本:mysql  Ver 14.14 Distrib 5.5.44, for linux2.6 (i686) using readline 5.1


    错误原因:my.conf放置在/etc目录下,当安装mysql-admin(mysql客户端,里面包含了mysql-common等包,)后,, 问题出现

    toor@door:/lib$ sudo /etc/init.d/mysql.server start
    Starting MySQL
    . * The server quit without updating PID file (/var/lib/mysql/door.pid).
    toor@door:/lib$ clear

    然后卸载mysql-admin(同时相应的包也卸载掉了):

    toor@door:/lib$ sudo /etc/init.d/mysql.server start
    /usr/local/mysql/bin/my_print_defaults: Can't read dir of '/etc/mysql/conf.d/' (Errcode: 2)  
    Fatal error in defaults handling. Program aborted
    Starting MySQL
    . * The server quit without updating PID file (/usr/local/mysql/data/door.pid).
    toor@door:/lib$ cd /etc/
    toor@door:/etc$ ls |grep mysql
    mysql
    toor@door:/etc$ cd mysql/
    toor@door:/etc/mysql$ ls
    my.cnf
    问题发生变化!


    然后再安装mysql-admin客户端

    toor@door:/lib$ sudo /etc/init.d/mysql.server start
    Starting MySQL
    . * The server quit without updating PID file (/var/lib/mysql/door.pid).

    然后把/etc目录下的my.conf文件移动到/etc/mysql/目录下(这里覆盖了安装某些包生成的默认my.cnf文件。

    toor@door:/etc$ sudo mv my.cnf mysql
    toor@door:/etc$ cd mysql
    toor@door:/etc/mysql$ ls
    conf.d  my.cnf
    toor@door:/etc/mysql$ gedit my.cnf
    toor@door:/etc/mysql$ ls
    conf.d  my.cnf
    toor@door:/etc/mysql$ sudo /etc/init.d/mysql.server start
    Starting MySQL
    ... *
    toor@door:/etc/mysql$ sudo /etc/init.d/mysql.server status
     * MySQL running (9965)



    要注意的是,mysql的配置文件有一个加载顺序,加载顺序参考:http://www.linuxidc.com/Linux/2012-02/53855.htm


    会先加载/etc/mysql/my.cnf,如果安装了某些软件,在/etc/mysql目录下创建了my.cnf,然而这个文件是新生成的默认文件,却不是我们的配置文件,启动的过程加载就不成功了!所以安装了某些包后出现启动不成功!当这些包或者程序卸载后如果my.cnf也没有删除掉的话,仍然启动失败!


    以上说的是mysql5.54版本!! 仅供参考!!!


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  • 原文地址:https://www.cnblogs.com/37sky/p/5055547.html
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