Hello,
While restarting MySQL service, you may get a error
"MySQL is running but PID file could not be found"
Let us see how to fix this error:
Login to the server as a root user with SSH
Create the directory var/run/mysql
#mkdir /var/run/mysql
Now create file mysqld.pid
#touch mysqld.pid
and change its ownership to mysql:mysql
#chown mysql:mysql mysqld.pid
Restart MySQL service and you will see no more error
Thank you for checking this post
