MySQL [ERROR] Table 'mysql.user' doesn't exist

    一次源码新装的mysql,由于没有复制my-default.cnf到/etc/my.cnf位置，在启动mysql的时候碰到了无法打开mysql.user表的错误。具体错误为：[ERROR] Fatal error: Can't open and lock privilege tables: Table 'mysql.user' doesn't exist。下面是该错误的描述及其解决办法。

1、现象描述 [root@HKBO scripts]# service mysqld start Starting MySQL..The server quit without updating PID file (/var/lib/mysql/HKBO.pid).[FAILED]

#查看错误日志 [root@HKBO scripts]# tail /var/log/mysqld.log InnoDB: Apply batch completed 2014-12-08 11:01:37 15721 [Note] InnoDB: 128 rollback segment(s) are active. 2014-12-08 11:01:37 15721 [Note] InnoDB: Waiting for purge to start 2014-12-08 11:01:37 15721 [Note] InnoDB: 5.6.12 started; log sequence number 1600607 2014-12-08 11:01:37 15721 [Note] Server hostname (bind-address): '*'; port: 3306 2014-12-08 11:01:37 15721 [Note] IPv6 is available. 2014-12-08 11:01:37 15721 [Note]   - '::' resolves to '::'; 2014-12-08 11:01:37 15721 [Note] Server socket created on IP: '::'. 2014-12-08 11:01:37 15721 [ERROR] Fatal error: Can't open and lock privilege tables: Table 'mysql.user' doesn't exist 141208 11:01:37 mysqld_safe mysqld from pid file /var/lib/mysql/HKBO.pid ended

# Author ： Leshami # Blog   :  http://blog.csdn.net/leshami

2、解决办法 #查看当前的my.cnf配置文件 [root@HKBO scripts]# more /etc/my.cnf |grep -v ^# [mysqld] datadir=/var/lib/mysql socket=/var/lib/mysql/mysql.sock user=mysql old_passwords=1

[mysqld_safe] log-error=/var/log/mysqld.log pid-file=/var/run/mysqld/mysqld.pid

#由于编译安装时指定的路径为/opt/data以及mysql_install_db时指定的datadir也为/opt/data,而my.cnf为缺省的路径 #因此修改datadir至正确路径后，问题解决 [root@HKBO scripts]# vi /etc/my.cnf [root@HKBO support-files]# more /etc/my.cnf |grep datadir datadir=/opt/data

[root@HKBO support-files]# service mysqld start Starting MySQL.[  OK  ]

3、更多参考

• Linux 下MySQL源码安装完整版
• MySQL 源码scr.rpm安装的一点注意事项
• Linux 5 下安装MySQL 5.6(RPM方式)
• Linux 下卸载MySQL 5