CentOS 7.4 使用yum源安装MySQL 5.7

先卸载mariadb。

检查mariadb是否已安装

[root@localhost ~]# yum list installed | grep mariadb

mariadb-libs.x86_64 1:5.5.56-2.el7 @anaconda

全部卸载

[root@localhost ~]# yum -y remove mariadb*

下面进行MySQL的安装。

[root@localhost src]# wget https://dev.mysql.com/get/mysql57-community-release-el7-11.noarch.rpm
[root@localhost src]# rpm -ivh mysql57-community-release-el7-11.noarch.rpm

检查mysql的yum源是否安装成功：

yum repolist enabled | grep "mysql.*-community.*" 

使用yum install mysql-server安装:

[root@localhost src]# yum install mysql-server

查看版本信息：

 [root@localhost src]# rpm -qi mysql-community-server

启动mysql-server：

[root@localhost src]# service mysqld start

使用初始密码登陆：

[root@localhost src]# cat /var/log/mysqld.log|grep 'A temporary password'
2018-02-11T06:47:54.773267Z 1 [Note] A temporary password is generated for root@localhost: 3=v/i;z/Y;P>
最后一行冒号后面的部分3=v/i;z/Y;P>就是初始密码。 

[root@localhost src]# mysql -u root -p

修改初始密码

mysql> SET PASSWORD=password('password');

添加一个可远程登录的帐号

mysql>GRANT all privileges on *.* TO 'root'@'%' identified by 'password 'WITH GRANT OPTION;
mysql>FLUSH PRIVILEGES;

mysql>SET PASSWORD FOR 'root'@'%'= PASSWORD('password');

常用的命令：

systemctl start mysqld    #启动mysqld
systemctl stop mysqld    #停止mysqld
systemctl restart mysqld    #重启mysqld
systemctl enable mysqld   #设置开机启动
systemctl status mysqld    #查看 MySQL Server 状态