# 首先应该删除 CentOS 中自带的 MySQL 安装包, 不然安装时会报错 [root@node1 /]# rpm -qa | mysql # 查询全部自带包中的 MySQL 安装包, 参数q: query查询, 参数a: all mysql-libs-5.1.66-2.el6_3.i686 # 查询结果 [root@node1 /]# rpm -e mysql-libs-5.1.66-2.el6_3.i686 # 这时候删除依然报错 error: Failed dependencies: # 这是由于依赖包的缘故 libmysqlclient.so.16 is needed by (installed) postfix-2:2.6.6-2.2.el6_1.i686 libmysqlclient.so.16(libmysqlclient_16) is needed by (installed) postfix-2:2.6.6-2.2.el6_1.i686 mysql-libs is needed by (installed) postfix-2:2.6.6-2.2.el6_1.i686 [root@node1 /]# rpm -ef mysql-libs-5.1.66-2.el6_3.i686 --nodeps # 使用强制删除, 参数e: erasure擦除, 参数--nodeps: 强制解除依赖 [root@node1 /]# rpm -qa | mysql -bash: mysql: command not found # 这时候再查询 MySQL 安装包, 发现已经被删除了 [root@node1 /]# rpm -ivh MySQL-server-5.1.73-1.glibc23.i386.rpm # 安装本身的 MySQL, 参数i: install安装, 参数v: 显示安装详细信息, 参数h: 显示安装进度 Preparing... ########################################### [100%] 1:MySQL-server ########################################### [100%] 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 node1 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. Please report any problems with the /usr/bin/mysqlbug script! Starting MySQL. SUCCESS! [root@node1 /]# rpm -ivh MySQL-client-5.1.73-1.glibc23.i386.rpm # 安装 MySQL 的client, 参数i: install安装, 参数v: 显示安装详细信息, 参数h: 显示安装进度 Preparing... ########################################### [100%] 1:MySQL-client ########################################### [100%] [root@node1 /]# /usr/bin/mysql_secure_installation # 初始化 MySQL 配置 NOTE: RUNNING ALL PARTS OF THIS SCRIPT IS RECOMMENDED FOR ALL MySQL SERVERS IN PRODUCTION USE! PLEASE READ EACH STEP CAREFULLY! In order to log into MySQL to secure it, we'll need the current password for the root user. If you've just installed MySQL, and you haven't set the root password yet, the password will be blank, so you should just press enter here. Enter current password for root (enter for none): # 直接回车 OK, successfully used password, moving on... Setting the root password ensures that nobody can log into the MySQL root user without the proper authorisation. Set root password? [Y/n] Y # 设置root用户密码 New password: # 输入要设置的root用户密码 Re-enter new password: # 确认密码 Password updated successfully! Reloading privilege tables.. ... Success! By default, a MySQL installation has an anonymous user, allowing anyone to log into MySQL without having to have a user account created for them. This is intended only for testing, and to make the installation go a bit smoother. You should remove them before moving into a production environment. Remove anonymous users? [Y/n] Y # 移除匿名用户 ... Success! Normally, root should only be allowed to connect from 'localhost'. This ensures that someone cannot guess at the root password from the network. Disallow root login remotely? [Y/n] n # 容许root用户远程登陆 ... skipping. By default, MySQL comes with a database named 'test' that anyone can access. This is also intended only for testing, and should be removed before moving into a production environment. Remove test database and access to it? [Y/n] n # 不移除 MySQL 自带的test database ... skipping. Reloading the privilege tables will ensure that all changes made so far will take effect immediately. Reload privilege tables now? [Y/n] Y # 刷新 MySQL 的权限 ... Success! Cleaning up... All done! If you've completed all of the above steps, your MySQL installation should now be secure. Thanks for using MySQL! # (执行下面的语句: *.*: 全部库下的全部表 xxx.xxx.xxx.xxx: 这个指定的IP地址能够链接MySql) mysql> [root@node1 /]#mysql -uroot -p mysql> GRANT ALL PRIVILEGES ON *.* TO 'root'@'xxx.xxx.xxx.xxx' IDENTIFIED BY '密码' WITH GRANT OPTION; mysql> FLUSH PRIVILEGES;