centos7安装Mysql

2023-02-08 linux 422字 2 min read

1. 下载 MySQL yum包

wget http://repo.mysql.com/mysql57-community-release-el7-10.noarch.rpm

2.安装MySQL源

rpm -Uvh mysql57-community-release-el7-10.noarch.rpm

3.安装MySQL服务端,需要等待一些时间

yum install -y mysql-community-server

4.启动MySQL

systemctl start mysqld.service

5.检查是否启动成功

systemctl status mysqld.service

6.获取临时密码,MySQL5.7为root用户随机生成了一个密码

冒号后面的是随机密码

grep 'temporary password' /var/log/mysqld.log 

7.通过临时密码登录MySQL,进行修改密码操作

mysql -uroot -p

使用临时密码登录后,不能进行其他的操作,否则会报错,这时候我们进行修改密码操作

8.因为MySQL的密码规则需要很复杂,我们一般自己设置的不会设置成这样,所以我们全局修改一下

mysql> set global validate_password_policy=0;
mysql> set global validate_password_length=1;

这时候我们就可以自己设置想要的密码了

ALTER USER 'root'@'localhost' IDENTIFIED BY 'yourpassword';

9.授权其他机器远程登录

GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY 'yourpassword' WITH GRANT OPTION;
 
FLUSH PRIVILEGES;

10.开启开机自启动

先退出mysql命令行,然后输入以下命令

systemctl enable mysqld
systemctl daemon-reload

11.设置MySQL的字符集为UTF-8,令其支持中文

vim /etc/my.cnf

改成如下,然后保存

# For advice on how to change settings please see
# http://dev.mysql.com/doc/refman/5.7/en/server-configuration-defaults.html
 
[mysql]
default-character-set=utf8
 
[mysqld]
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
character_set_server=utf8
 
symbolic-links=0
 
log-error=/var/log/mysqld.log
pid-file=/var/run/mysqld/mysqld.pid

12.重启一下MySQL,令配置生效

service mysqld restart

13.防火墙开放3306端口

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