mysql安装（centos7）

1、下载rpm

wget -i -c http://dev.mysql.com/get/mysql57-community-release-el7-10.noarch.rpm

2、安装rpm

yum -y install mysql57-community-release-el7-10.noarch.rpm

3、安装mysql

yum -y install mysql-community-server

4、启动mysql

msystemctl start  mysqld

5、查看mysql状态

systemctl status  mysqld

6、关闭mysql

systemctl stop  mysqld

7、重启mysql

systemctl restart  mysqld

8、查看mysql默认临时密码

grep "password" /var/log/mysqld.log

9、连接mysql

mysql -uroot -p

输入原始密码进入

10、修改密码（大小写和特殊符号）

ALTER USER 'root'@'localhost' IDENTIFIED BY 'new password';

11、开启远程访问（所有'%'匹配）

GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY '修改后的密码' WITH GRANT OPTION;

flush privileges;

exit

12、开放3306端口

firewall-cmd --zone=public --add-port=3306/tcp --permanent

firewall-cmd --reload

13、mysql配置字符编码与超时

vim /etc/my.cnf

添加

wait_timeout=31536000
interactive_timeout=31536000

character-set-server=utf8
collation-server=utf8_general_ci

下图来自网络：

13、重启