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mysql报错Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock'


Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2)

很明显,找不到​​/var/lib/mysql/mysql.sock​​​,这是因为默认的​​socket​​​是在​​/tmp/mysql.sock​

编辑​​/etc/my.cnf​​​ ,修改​​socket​​ (client和server的都要改)

socket          = /var/lib/mysql/mysql.sock   #默认是/tmp/mysql.sock

然后重启mysql,但是shell输出:

mysqld_safe mysqld from pid file /usr/local/mysql/data/iZm5e0mgr2ayoxe7szl6i2Z.pid ended

查看mysql错误日志:

tail -f /usr/local/mysql/data/iZm5e0mgr2ayoxe7szl6i2Z.pid

报错为:

[ERROR] Do you already have another mysqld server running on socket: /var/lib/mysql/mysql.sock ?

2个原因:
/var/lib/mysql 目录不存在
/var/lib/mysql 存在,但是权限不够
创建文件夹并授权:

mkdir -p /var/lib/mysql;   # -p表示如果没有parent文件夹,就创建
chmod -R 777 /var/lib/mysql;

重启mysql,成功。


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