1.检查是否已经安装过相关服务
rpm -qa | grep -i mysql
2.如果已经安装过，则先卸载之前的
rpm -e --nodeps xxxx
3.解压安装压缩包
tar -zxvf mysql-5.7.11-1.el6.x86_64.rpm-bundle.tar
4.安装
rpm -ivh mysql-community-server-5.7.11-1.el6.x86_64.rpm mysql-community-common-5.7.11-1.el6.x86_64.rpm mysql-community-libs-5.7.11-1.el6.x86_64.rpm mysql-community-client-5.7.11-1.el6.x86_64.rpm
5.启动数据库
service mysqld start
6.查看mysql相关进程
ps -ef | grep mysql
7.查看初始密码
grep 'temporary password' /var/log/mysqld.log
8.登录
mysql -u root -p
9.登录成功之后，修改validate_password_policy参数的值，用于密码修改的复杂度
mysql> set global validate_password_policy=0;
修改密码：
mysql> alter user 'root'@'localhost' identified by 'xxxxx';
10.修改允许远程访问数据库（默认是不允许远程访问的）
vi /etc/sysconfig/iptables
#新增如下语句
-A INPUT -m state --state NEW -m tcp -p tcp --dport 3306 -j ACCEPT
11. 重启防火墙
service iptables restart
12.数据库授权
mysql -u root -p
mysql>grant all on *.* to root@'%' identified by 'xxxxx' --xxxx为root用户的密码
13.重启数据库
/etc/init.d/mysqld restart
