1、查看系统中是否自带安装mysql
yum list installed | grep mysql
2、安装wget命令
yum install wget -y
3、给CentOS添加rpm源
wget dev.mysql.com/get/mysql-community-release-el6-5.noarch.rpm
4、安装下载好的rpm文件
yum install mysql-community-release-el6-5.noarch.rpm -y
5、安装成功之后，/etc/yum.repos.d/目录下会增加两个文件
-rw-r--r--. 1 root root 1209 Oct 17 20:49 mysql-community.repo
-rw-r--r--. 1 root root 1060 Dec 2 2013 mysql-community-source.repo
6、修改mysql-community.repo文件
[mysql57-community]
name=MySQL 5.7 Community Server
baseurl=http://repo.mysql.com/yum/mysql-5.7-community/el/7/$basearch/
enabled=1
gpgcheck=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-mysql
7、yum安装mysql
yum install mysql-community-server -y
8、启动mysql服务并设置开机启动
#启动mysql服务
service mysqld start
#设置mysql开机启动
chkconfig mysqld on
9、获取mysql临时密码
grep "password" /var/log/mysqld.log
10、使用临时密码登录
mysql -uroot -p
11、修改密码
set global validate_password_policy=0;
set global validate_password_length=1;
ALTER USER 'root'@'localhost' IDENTIFIED BY 'root';
12、修改远程访问权限
grant all privileges on *.* to 'root'@'%' identified by 'root' with grant option;
flush privileges;
13、修改防火墙配置
yum install iptables-services
vim /etc/sysconfig/iptables
添加上：iptables -A INPUT -m state --state NEW -m tcp -p tcp --dport 3306 -j ACCEPT
退出编辑后输入：service iptables save
再重启iptables：service iptables restart
