用yum安装后，执行service命令启动：
[root@centos ~]# yum install mysql-server Loaded plugins: fastestmirror, security Setting up Install Process Loading mirror speeds from cached hostfile Resolving Dependencies --> Running transaction check ---> Package mysql-server.i686 0:5.1.73-8.el6_8 will be installed --> Processing Dependency: mysql = 5.1.73-8.el6_8 for package: mysql-server-5.1.73-8.el6_8.i686 --> Processing Dependency: perl-DBD-MySQL for package: mysql-server-5.1.73-8.el6_8.i686 --> Processing Dependency: libmysqlclient_r.so.16(libmysqlclient_16) for package: mysql-server-5.1.73-8.el6_8.i686 --> Processing Dependency: libmysqlclient_r.so.16 for package: mysql-server-5.1.73-8.el6_8.i686 --> Processing Dependency: libmysqlclient.so.16(libmysqlclient_16) for package: mysql-server-5.1.73-8.el6_8.i686 --> Processing Dependency: libmysqlclient.so.16 for package: mysql-server-5.1.73-8.el6_8.i686 --> Running transaction check ---> Package mysql.i686 0:5.1.73-8.el6_8 will be installed ---> Package mysql-libs.i686 0:5.1.73-8.el6_8 will be installed ---> Package perl-DBD-MySQL.i686 0:4.013-3.el6 will be installed --> Finished Dependency Resolution Dependencies Resolved ======================================================================================================================================================================= Package Arch Version Repository Size ======================================================================================================================================================================= Installing: mysql-server i686 5.1.73-8.el6_8 os 8.8 M Installing for dependencies: mysql i686 5.1.73-8.el6_8 os 904 k mysql-libs i686 5.1.73-8.el6_8 os 1.2 M perl-DBD-MySQL i686 4.013-3.el6 os 134 k Transaction Summary ======================================================================================================================================================================= Install 4 Package(s) Total download size: 11 M Installed size: 31 M Is this ok [y/N]: y Downloading Packages: (1/4): mysql-5.1.73-8.el6_8.i686.rpm | 904 kB 00:01 (2/4): mysql-libs-5.1.73-8.el6_8.i686.rpm | 1.2 MB 00:01 (3/4): mysql-server-5.1.73-8.el6_8.i686.rpm | 8.8 MB 00:12 (4/4): perl-DBD-MySQL-4.013-3.el6.i686.rpm | 134 kB 00:00 ----------------------------------------------------------------------------------------------------------------------------------------------------------------------- Total 667 kB/s | 11 MB 00:16 Running rpm_check_debug Running Transaction Test Transaction Test Succeeded Running Transaction Installing : mysql-libs-5.1.73-8.el6_8.i686 1/4 Installing : perl-DBD-MySQL-4.013-3.el6.i686 2/4 Installing : mysql-5.1.73-8.el6_8.i686 3/4 Installing : mysql-server-5.1.73-8.el6_8.i686 4/4 Verifying : mysql-server-5.1.73-8.el6_8.i686 1/4 Verifying : mysql-libs-5.1.73-8.el6_8.i686 2/4 Verifying : perl-DBD-MySQL-4.013-3.el6.i686 3/4 Verifying : mysql-5.1.73-8.el6_8.i686 4/4 Installed: mysql-server.i686 0:5.1.73-8.el6_8 Dependency Installed: mysql.i686 0:5.1.73-8.el6_8 mysql-libs.i686 0:5.1.73-8.el6_8 perl-DBD-MySQL.i686 0:4.013-3.el6 Complete! [root@centos ~]# service mysqld start Initializing MySQL database: Installing MySQL system tables... OK Filling help tables... OK To start mysqld at boot time you have to copy support-files/mysql.server to the right place for your system PLEASE REMEMBER TO SET A PASSWORD FOR THE MySQL root USER ! To do so, start the server, then issue the following commands: /usr/bin/mysqladmin -u root password 'new-password' /usr/bin/mysqladmin -u root -h centos password 'new-password' Alternatively you can run: /usr/bin/mysql_secure_installation which will also give you the option of removing the test databases and anonymous user created by default. This is strongly recommended for production servers. See the manual for more instructions. You can start the MySQL daemon with: cd /usr ; /usr/bin/mysqld_safe & You can test the MySQL daemon with mysql-test-run.pl cd /usr/mysql-test ; perl mysql-test-run.pl Please report any problems with the /usr/bin/mysqlbug script! [ OK ] Starting mysqld: [ OK ]
我们看到6.9的centos安装的mysql是5.1.73版本的，虽然比较老，毕竟还能用。
接着设置root用户密码：
[root@centos ~]# mysql -u root Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 2 Server version: 5.1.73 Source distribution Copyright (c) 2000, 2013, 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> mysql> mysql> mysql> mysql> select user,password,host from mysql.user; +------+----------+-------------------+ | user | password | host | +------+----------+-------------------+ | root | | localhost | | root | | centos | | root | | 127.0.0.1 | | | | localhost | | | | centos | +------+----------+-------------------+ 5 rows in set (0.00 sec) mysql> set password for root@localhost=password('123456'); Query OK, 0 rows affected (0.00 sec) mysql> select user,password,host from mysql.user; +------+-------------------------------------------+-------------------+ | user | password | host | +------+-------------------------------------------+-------------------+ | root | *6BB4837EB74329105EE4568DDA7DC67ED2CA2AD9 | localhost | | root | | centos | | root | | 127.0.0.1 | | | | localhost | | | | centos | +------+-------------------------------------------+-------------------+ 5 rows in set (0.00 sec)
接着就可以开始玩了。