How to troubleshoot MySQL startup error

This article gives you the content is about MySQL start error resolution, there is a certain reference value, the need for friends can refer to, I hope to help you.

Yesterday after resolving the database cross-permission operation, today opened the project suddenly error, and then restart the database, reported error! MySQL server PID file couldnot be found!, command line link database also reported can ' t connect to local MySQL server through socket '/var/li B/mysql/mysql.sock ' (2), the Internet to find some information, incredibly are mutual plagiarism, and did not solve the problem . Then I groped for a bit, the problem is solved, the following is my solution, so that I have the same problems as children shoes to reference and solve the problem.

First look at the process

PS aux |grep mysq*

If you see the red circled above, it means that the MySQL process is dead, and then the process of using these cards will be closed.

Kill 27664

Kill 28873

Kill 30041

Kill 30597

Then restart MySQL

Service MySQL Start

OK, that's the easy way to solve the problem.