mysql----startup error

 

Got this error today when starting mysql on xshell:

[root@mini1 ~]# service mysql start
Starting MySQL SUCCESS! 
[root@mini1 ~]# mysql -u root -proot
ERROR 2002 (HY000): Can't connect to local MySQL server through socket ' /var/li b/mysql/mysql.sock' (2)

 

Then closing mysql also reported an error:

[root@mini1 ~]# service mysql stop
ERROR! MySQL server PID file could not be found!

Solution:

First look at the process

[root@ irxpert-test /]# ps aux |grep mysq*

root    10274  0.0  0.0  68160  1336 ?        S    13:43   0:00 /bin/sh /usr/bin/mysqld_safe --datadir=/var/lib/mysql --pid-file=/var/lib/mysql/irxpert-test.pid
mysql    10353  0.0  1.0 344360 39464 ?        Sl   13:43   0:00 /usr/sbin/mysqld --basedir=/usr --datadir=/var/lib/mysql --plugin-dir=/usr/lib64/mysql/plugin --user=mysql --log-error=/var/lib/mysql/irxpert-test.err --pid-file=/var/lib/mysql/irxpert-test.pid
root     11884  0.0  0.0  63384   760 pts/1    S+   15:44   0:00 grep mysq*

If you see the above content, it means that the Mysql process is stuck, and then you need to close these stuck processes.

[root@centos mysql]# kill -9 10274

[root@centos mysql]# kill -9 10353

It's ok to start Mysql