How to solve the MySQL server PID file could not be found problem

This article introduces the relevant knowledge of "how to solve the MySQL server PID file could not be found problem". In the operation of actual cases, many people will encounter such a dilemma. Next, let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

Root@s1 Downloads] # service mysql restart

MySQL server PID file could not be found! [FAILED]

[root@s1 Downloads] # service mysql stop

MySQL server PID file could not be found! [FAILED]

Solution:

1. View services through the ss-tnl command

[root@s1 Downloads] # ss-tnl

State Recv-Q Send-Q Local Address:Port Peer Address:Port

LISTEN 0 50 *: 3306 *: *

2. Stop the mysql service

[root@s1 Downloads] # killall mysqld

3. Restart the mysql service

4. Mysql data directory permissions exception found

[root@s1 Downloads] # mysql

ERROR 2002 (HY000): Can't connect to local MySQL server through socket'/ var/lib/mysql/mysql.sock' (2)

5. Modify mysql data directory permissions

[root@s1 Downloads] # chown-R mysql.mysql / var/lib/mysql/

6. Restart the service and log in to mysql normally.

This is the end of "how to solve the MySQL server PID file could not be found problem". Thank you for reading. If you want to know more about the industry, you can follow the website, the editor will output more high-quality practical articles for you!