摘抄自：http://www.centoscn.com/mysql/2016/0626/7537.html
一 安装yum源
1 wget http://dev.mysql.com/get/mysql57-community-release-el7-8.noarch.rpm 2 yum localinstall mysql57-community-release-el7-8.noarch.rpm
检查yum源：
1 yum repolist enabled | grep "mysql.*-community.*"
结果显示如下三行，表示成功：
1 mysql-connectors-community/x86_64 MySQL Connectors Community 42 2 mysql-tools-community/x86_64 MySQL Tools Community 51 3 mysql57-community/x86_64 MySQL 5.7 Community Server 207
二 安装mysql
1 yum install mysql-community-server
三 启动mysql
1 systemctl start mysqld
四 查看mysql状态
1 systemctl status mysqld
显示如下，表示成功：
1 ● mysqld.service - MySQL Server 2 Loaded: loaded (/usr/lib/systemd/system/mysqld.service; enabled; vendor preset: disabled) 3 Active: active (running) since Sat 2017-09-16 16:18:34 CST; 25s ago 4 Docs: man:mysqld(8) 5 http://dev.mysql.com/doc/refman/en/using-systemd.html 6 Process: 5692 ExecStart=/usr/sbin/mysqld --daemonize --pid-file=/var/run/mysqld/mysqld.pid $MYSQLD_OPTS (code=exited, status=0/SUCCESS) 7 Process: 5594 ExecStartPre=/usr/bin/mysqld_pre_systemd (code=exited, status=0/SUCCESS) 8 Main PID: 5694 (mysqld) 9 CGroup: /system.slice/mysqld.service 10 └─5694 /usr/sbin/mysqld --daemonize --pid-file=/var/run/mysqld/mysqld.pid 11 12 Sep 16 16:18:29 centos7-10.211.55.5.shared systemd[1]: Starting MySQL Server... 13 Sep 16 16:18:34 centos7-10.211.55.5.shared systemd[1]: Started MySQL Server.
五 设置开机启动
1 systemctl enable mysqld 2 systemctl daemon-reload
六 密码修改
先查看root的密码：
1 grep 'temporary password' /var/log/mysqld.log
显示密码如下：RK5&C(pW*AG(
1 2017-09-16T08:18:31.881461Z 1 [Note] A temporary password is generated for root@localhost: RK5&C(pW*AG(
登陆：
1 mysql -uroot -p
然后输入上边的密码进行登录，之后修改密码
1 ALTER USER 'root'@'localhost' IDENTIFIED BY 'Zhaojigang123!';
七 配置编码
1 vi /etc/my.cnf 2 添加如下内容： 3 character_set_server=utf8 4 init_connect='SET NAMES utf8'
八 重启mysql
1 systemctl restart mysqld
九 使用mysql客户端进行连接
客户端可以使用navicat或者AquaDataStudio18。
注意：如果mysql部署在远程机器上，此时首先需要关闭远程机器的防火墙，其次需要创建一个用户授予远程访问权限（因为mysql只允许root用户在本机访问）
1 关闭防火墙：centos7关闭防火墙
2 创建一个用户授予远程访问权限：通过root账号登陆mysql，之后执行：
1 GRANT ALL PRIVILEGES ON *.* TO 'zhaojigang'@'%' IDENTIFIED BY 'Zhaojigang123!' WITH GRANT OPTION;