1 创建mysql.repo文件
2 [root@centos7 ~]#tee /etc/yum.repos.d/mysql.repo <<EOF
3 [mysql]
4 name=mysql5.7
5 baseurl=https://mirrors.tuna.tsinghua.edu.cn/mysql/yum/mysql-5.7-community-el7-x86_64/
6 gpgcheck=0
7 EOF
8
9 安装msyql
10 [root@centos7 ~]#yum -y install mysql-community-server
11 自启动
12 [root@centos7 ~]#systemctl enable --now mysqld
13
14 查看初始密码
15 [root@centos7 ~]#grep password /var/log/mysqld.log
16 2021-01-27T00:45:09.953242Z 1 [Note] A temporary password is generated for root@localhost: pe%b#S8ah)j- <---密码
17
18
19 #使用初始密码登录无法执行操作,需要修改密码后才可以
20 mysql> status
21 ERROR 1820 (HY000): You must reset your password using ALTER USER statement before executing this statement.
23 #修改简单密码不符合密码策略
24 mysql> alter user root@'localhost' identified by 'ruigu2023';
25 ERROR 1819 (HY000): Your password does not satisfy the current policy requirements
27 #修改为复杂密码
28 mysql> alter user root@'localhost' identified by 'Ruigu2023!';
29 Query OK, 0 rows affected (0.00 sec)
