CentOS7安装MySQL服务

CentOS7安装MySQL服务

1、安装wget

yum install wget

2、mysql下载

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

3、安装软件源

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

4、 安装mysql服务端

yum install  -y  mysql-community-server

5、启动mysql

service mysqld start

• 如果在启动服务时失败，报如下错误

Job for mysqld.service failed because the control process exited with error code. See “systemctl status mysqld.service” and “journalctl -xe” for details.

参见另一篇文章 虚拟机启动mysql服务遇到的问题

6、检查mysql运行状态

service mysqld status

[root@test-zj ~]# systemctl status mysqld
● mysqld.service - MySQL Server
   Loaded: loaded (/usr/lib/systemd/system/mysqld.service; enabled; vendor preset: disabled)
   Active: active (running) since Wed 2020-04-22 07:15:23 UTC; 37s ago
     Docs: man:mysqld(8)
           http://dev.mysql.com/doc/refman/en/using-systemd.html
 Main PID: 2141 (mysqld)
   CGroup: /system.slice/mysqld.service
           └─2141 /usr/sbin/mysqld --daemonize --pid-file=/var/run/mysqld/mysqld.pid

Apr 22 07:15:08 test-zj systemd[1]: Starting MySQL Server...
Apr 22 07:15:23 test-zj systemd[1]: Started MySQL Server.

7、查看临时密码

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

[root@test-zj ~]# grep 'temporary password' /var/log/mysqld.log
2020-04-22T07:15:19.556900Z 1 [Note] A temporary password is generated for root@localhost: u1J1-TkhsUX<

8、输入临时密码，进行登录

mysql -u root -p

[root@test-zj ~]# mysql -u root -p 
Enter password: 
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 2
Server version: 5.7.29

Copyright (c) 2000, 2020, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql>

9、修改validate_password_policy参数的值

set global validate_password_policy=0;

10、修改密码的长度

set global validate_password_length=1;

11、修改密码

ALTER USER 'root'@'localhost' IDENTIFIED BY '123456';

如果不执行9和10，直接修改密码，会报如下错误 ERROR 1819 (HY000): Your password does not satisfy the current policy requirements

转载文档

https://juejin.im/post/5def2a82518825126e6396be