Step1: 检测系统是否自带安装mysql
de >
# yum list installed | grep mysql
de>
Step2: 删除系统自带的mysql及其依赖
命令：
de >
# yum -y remove mysql-libs.x86_64
de>
de >
注：用de>
yum -y remove xxx【
xxx是你第一步骤命令的输出
】，这个步骤不能省略，不然下面会出现一堆莫名其妙的问题；
Step3: 给CentOS添加rpm源，并且选择较新的源
命令：
de >
# wget dev.mysql.com/get/mysql-community-release-el6-5.noarch.rpm
# yum localinstall mysql-community-release-el6-5.noarch.rpm
# yum repolist all | grep mysql
# yum-config-manager --disable mysql55-community
# yum-config-manager --disable mysql56-community
# yum-config-manager --enable mysql57-community-dmr
# yum repolist enabled | grep mysql
de>
de >
注：如果de>
yum-config-manager这个命令没有，直接yum
yum-*即可
Step4:安装mysql 服务器
命令：
de ># yum
install mysql-community-server
de>
Step5: 启动mysql
命令:
de >
# service mysqld start
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Step6: 查看mysql是否自启动,并且设置开启自启动
命令:
de >
# chkconfig --list | grep mysqld
# chkconfig mysqld on
de>
Step7: 获取mysql初始密码：
#######从mysql进程日志中获取root用户的初始密码：ra%yk7urCBIh
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[root@typecodes ~]# grep "password" /var/log/mysqld.log
2016-02-03T10:42:17.272166Z 1 [Note] A temporary password is generated for root@localhost: ra%yk7urCBIh
2016-02-03T10:42:36.776875Z 2 [Note] Access denied for user 'root'@'localhost' (using password: NO)
2016-02-03T10:42:52.063138Z 3 [Note] Access denied for user 'root'@'localhost' (using password: NO)
2016-02-03T10:42:57.564373Z 4 [Note] Access denied for user 'root'@'localhost' (using password: NO)
2016-02-03T10:43:01.477007Z 5 [Note] Access denied for user 'root'@'localhost' (using password: NO)
2016-02-03T10:46:03.642008Z 6 [Note] Access denied for user 'root'@'localhost' (using password: NO)
2016-02-03T10:46:11.217889Z 7 [Note] Access denied for user 'root'@'localhost' (using password: NO)
2016-02-03T10:47:44.755199Z 0 [Note] Shutting down plugin 'validate_password'
2016-02-03T10:47:46.505844Z 0 [Note] Shutting down plugin 'sha256_password'
2016-02-03T10:47:46.505851Z 0 [Note] Shutting down plugin 'mysql_native_password'
Step8: mysql安全设置
命令：# mysql_secure_installation
step9:登陆mysql，创建用户，数据库等
参照：http://cyxinda.blog.163.com/blog/static/36596186201503162841301/
step10:
MySQL的配置文件依然是
de style="box-sizing: border-box; font-size: 12px; padding: 2px 4px; color: rgb(199, 37, 78); white-space: nowrap; border-radius: 2px; overflow: auto; background-color: rgb(249, 242, 244);" >/etc/my.cnf
de>
，其它安装信息可以通过
de style="box-sizing: border-box; font-size: 12px; padding: 2px 4px; color: rgb(199, 37, 78); white-space: nowrap; border-radius: 2px; overflow: auto; background-color: rgb(249, 242, 244);" >mysql_config
de>
命令查看。其中，动态库文件存放在
de style="box-sizing: border-box; font-size: 12px; padding: 2px 4px; color: rgb(199, 37, 78); white-space: nowrap; border-radius: 2px; overflow: auto; background-color: rgb(249, 242, 244);" >/usr/lib64/mysql
de>
目录下。
调优mysql参数：http://cyxinda.blog.163.com/blog/static/365961862016066020391/
[root@master2 ~]# mysql_config
