VMware加载其他宿主机上的虚拟机以后，mySQL没法启动。如何解决？

Posted 2020-10-02 梁汉立

IP地址已经修改过来，与宿主机在一个网段（Bridge模式）。但是，mysql无法连接上。

[root@localhost ~]# mysql
ERROR 2002 (HY000): Can\'t connect to local MySQL server through socket \'/var/lib/mysql/mysql.sock\' (2)

[root@localhost ~]# ps -A | grep -i mysql
[root@localhost ~]# service mysql start
Redirecting to /bin/systemctl start mysql.service
Failed to start mysql.service: Unit not found.

[root@localhost ~]# ps -ef|grep mysql
root 4560 4126 0 20:40 pts/0 00:00:00 grep --color=auto mysql

 

[root@localhost ~]# /etc/init.d/mysql start
bash: /etc/init.d/mysql: 没有那个文件或目录

在/etc/rc.d/init.d里面没有mysqld，

[root@localhost ~]# /usr/bin/mysqladmin version
/usr/bin/mysqladmin: connect to server at \'localhost\' failed
error: \'Can\'t connect to local MySQL server through socket \'/var/lib/mysql/mysql.sock\' (2)\'
Check that mysqld is running and that the socket: \'/var/lib/mysql/mysql.sock\' exists!

[root@localhost ~]# rpm -qa | grep -i mysql
qt5-qtbase-mysql-5.6.1-10.el7.x86_64
qt3-MySQL-3.3.8b-51.el7.x86_64
akonadi-mysql-1.9.2-4.el7.x86_64
perl-DBD-MySQL-4.023-5.el7.x86_64
qt-mysql-4.8.5-13.el7.x86_64
MySQL-python-1.2.5-1.el7.x86_64

 [root@localhost ~]# whereis mysql
mysql: /usr/bin/mysql /usr/lib/mysql /usr/lib64/mysql /usr/include/mysql /usr/share/mysql /usr/share/man/man1/mysql.1.gz

 

 [root@localhost ~]# find / -name mysql.sock

[root@localhost ~]# touch /var/lib/mysql/mysql.sock

[root@localhost ~]# service mysql start
Redirecting to /bin/systemctl start  mysql.service
Failed to start mysql.service: Unit not found.
[root@localhost ~]# systemctl start mysql.service
Failed to start mysql.service: Unit not found.

 

 

 [root@localhost ~]# service mysqld status
Redirecting to /bin/systemctl status  mysqld.service
Unit mysqld.service could not be found.
[root@localhost ~]# service mysqld stop
Redirecting to /bin/systemctl stop  mysqld.service
Failed to stop mysqld.service: Unit mysqld.service not loaded.
[root@localhost ~]# rm -fr /var/lib/mysql/*
[root@localhost ~]# rm /var/lock/subsys/mysqld
rm: 无法删除"/var/lock/subsys/mysqld": 没有那个文件或目录
[root@localhost ~]# killall mysqld 
mysqld: no process found
[root@localhost ~]# service mysql start
Redirecting to /bin/systemctl start  mysql.service
Failed to start mysql.service: Unit not found.

 

看了很多帖子，实际都不是这个问题。最后这个帖子解决了，老外遇到的。还是外国的帖子有价值些，内容广些，原创多。Google很重要。

http://www.cnblogs.com/aleafo/p/4946037.html

# mysql -u root -p
Enter password:
Welcome to the MariaDB monitor.  Commands end with ; or \\g.
Your MariaDB connection id is 11
Server version: 5.5.37-MariaDB MariaDB Server

Copyright (c) 2000, 2014, Oracle, Monty Program Ab and others.

Type \'help;\' or \'\\h\' for help. Type \'\\c\' to clear the current input statement.

MariaDB [(none)]>

So the 3 steps to enable and run MariaDB are as follows, assuming it was previously installed during the initial setup for the system or with yum install mariadb mariadb-server:

systemctl start mariadb.service
systemctl enable mariadb.service
mysql_secure_installation