CentOS 下安装MySQL 默认源为5.1版本

CentOS——默认为安装5.1版本，如果需要安装5.5版本，需要使用remi源

yum install mysql-server –enablerepo=remi

 

Ubuntu——默认为安装5.5版本

apt-get install mysql-server

CentOS下直接yum安装

[root@10-4-5-9 ~]# yum list mysql
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
Available Packages
mysql.x86_64                                            5.1.73-3.el6_5                                            updates

　　

[root@10-4-5-9 ~]# wget http://dl.fedoraproject.org/pub/epel/5/i386/epel-release-5-4.noarch.rpm

[root@10-4-5-9 ~]# ls
anaconda-ks.cfg  epel-release-5-4.noarch.rpm  install.log  install.log.syslog
[root@10-4-5-9 ~]# rpm -ivh epel-release-5-4.noarch.rpm

#查看MySQL版本

[root@10-4-5-9 ~]# yum --enablerepo=remi,remi-test list mysql mysql-server

#安装MySQL

yum install mysql-server --enablerepo=remi

　

#查看安装好后的MySQL

　

[root@10-4-5-9 ~]# rpm -qa | grep mysql
mysql-5.5.39-1.el6.remi.x86_64
mysql-libs-5.5.39-1.el6.remi.x86_64
compat-mysql51-5.1.54-1.el6.remi.x86_64
mysql-server-5.5.39-1.el6.remi.x86_64

#启动MySQL

[root@10-4-5-9 ~]# service mysqld start
Starting mysqld:                                           [  OK  ]

　　

#登陆MySQL

[root@10-4-5-9 ~]# mysql
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 2
Server version: 5.5.39 MySQL Community Server (GPL) by Remi

Copyright (c) 2000, 2014, 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>

　

#查看MySQL用户

mysql> SELECT user,host FROM mysql.user;
+------+-----------+
| user | host      |
+------+-----------+
|      | 10-4-5-9  |
| root | 10-4-5-9  |
| root | 127.0.0.1 |
| root | ::1       |
|      | localhost |
| root | localhost |
+------+-----------+
6 rows in set (0.00 sec)

　　

#删除空用户

DROP USER ''@'10-4-5-9';

DROP USER ''@'localhost';

DROP USER 'root'@'::1';

　　

#修改密码

mysql> UPDATE mysql.user SET password = PASSWORD('********') WHERE user = 'root';
Query OK, 3 rows affected (0.00 sec)
Rows matched: 3  Changed: 3  Warnings: 0

mysql> FLUSH PRIVILEGES;
Query OK, 0 rows affected (0.00 sec)

　　

#重新登陆

[root@10-4-5-9 ~]# mysql -uroot -p
Enter password:
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 4
Server version: 5.5.39 MySQL Community Server (GPL) by Remi

Copyright (c) 2000, 2014, 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>

一切OK。。。