Centos7安装mysql5.6教程

安装教程

   1、下载mysql的repo源

   wget http://repo.mysql.com/mysql-community-release-el7-5.noarch.rpm
可能遇见的问题：wget未找到命令

解决方案：yum -y install wget

      2、安装mysql-community-release-el7-5.noarch.rpm包
       sudo rpm -ivh mysql-community-release-el7-5.noarch.rpm
安装完这个包后，会获得两个mysql的yum repo源：/etc/yum.repos.d/mysql-community.repo，/etc/yum.repos.d/mysql-community-source.repo。
       3、安装mysql
       sudo yum install mysql-server

安装完的配置

       1、加入开机启动
       systemctl enable mysqld
       2、启动mysql服务进程
       systemctl start mysqld
       3、重置密码
       [root@localhost ~]# 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.
You already have a root password set, so you can safely answer ‘n’.
Change the root password? [Y/n] y [设置root用户密码]
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] y [删除匿名用户]
… 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 [禁止root远程登录]
… 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] y [删除test数据库]
- Dropping test database…
ERROR 1008 (HY000) at line 1: Can’t drop database ‘test’; database doesn’t exist
… Failed! Not critical, keep moving…
- Removing privileges on test database…
… Success!
Reloading the privilege tables will ensure that all changes made so far
will take effect immediately.
Reload privilege tables now? [Y/n] y [刷新权限]
… 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…

      4、授权远程登录
       （1）登录mysql数据库 Mysql -u root -p

       （2）授权登录
  登录mysql之后执行
  GRANT ALL PRIVILEGS ON . TO ‘ROOT’@’%’ IDENTIFIED BY ‘PASSWORD’ WITH GRANT OPTION;（注：此处的password指的是root用户的密码）
  GRANT ALL PRIVILEGS ON . TO ‘ROOT’@’%’ IDENTIFIED BY ‘123456’ WITH GRANT OPTION;

      5、开放防火墙端口
       firewall-cmd –add-port=3306/tcp –permanent

      6、重启防火墙
       service firewalld restart