记一次centos7安装mysql5.6

看网上好多人介绍安装mysql直接就是yum install mysql-server.实际测试中这个并不好用，因为centos默认源mysql已经被mariadb替换了，你想直接装mysql是不行的。

下面是yum安装mysql的方法：

1、下载 Yum Repository

wget http://dev.mysql.com/get/mysql-community-release-el7-5.noarch.rpm

2、添加yum源

rpm -ivh mysql-community-release-el7-5.noarch.rpm

3、安装mysql

yum install mysql-community-server

这里需要介绍一下，以上yum源文件，默认**的是mysql5.6版本，如果想启用其他版本需要使用如下事例语句来启用：

yum-config-manager --disable mysql56-community
yum-config-manager --enable mysql57-community-dmr

查看该yum源具体包含哪些版本的安装包可以使用以下命令来实现

yum repolist all

4、启动mysql

service mysqld start

5、设置mysql用户名密码

mysql_secure_installation

在此，因为是首次登陆，输入旧密码时直接回车即可，之后再输入新密码。在此，新密码就设置完了。后面还会询问是否删除test库，是否禁止远程登陆，是否刷新权限。根据自己的需求自己输入y或者n。页面提示如下：

[[email protected] ~]# mysql_secure_installation



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):
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
New password:
Re-enter new password:
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]
 ... 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
 ... 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
 ... skipping.

Reloading the privilege tables will ensure that all changes made so far
will take effect immediately.

Reload privilege tables now? [Y/n] y
 ... Success!




All done!  If you've completed all of the above steps, your MySQL
installation should now be secure.

Thanks for using MySQL!


Cleaning up...

在此，mysql安装完成