[root@tao Desktop]# service mysql start
Starting MySQL SUCCESS!
[root@tao Desktop]# service mysql status
ERROR! Multiple MySQL running but PID file could not be found ( )
提示如上所述。解决办法：
[root@tao Desktop]# kill
[root@tao Desktop]# kill 4245
service mysql restart
出现：
ERROR! MySQL server PID file could not be found!
查看mysql运行状态发现正常，并登陆Mysql：
[root@tao Desktop]# service mysql status
SUCCESS! MySQL running ()
[root@tao Desktop]# mysql
ERROR (): Access denied for user 'root'@'localhost' (using password: NO)
[root@tao Desktop]# mysql -u root
ERROR (): Access denied for user 'root'@'localhost' (using password: NO)
[root@tao Desktop]# mysql -u root -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is
Server version: 5.7.-m13 MySQL Community Server (GPL) Copyright (c) , , Oracle and/or its affiliates. All rights reserved. Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. mysql> show databases;
+--------------------------+
| Database |
+--------------------------+
| information_schema |
| cems |
| hive |
| mysql |
| performance_schema |
| test |
| #mysql50#untitled folder |
+--------------------------+
rows in set (0.08 sec)