centos7安装mysql5.7

1 下载并安装MySQL官方的 Yum Repository

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

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

# yum -y install mysql-community-server

# systemctl start  mysqld.service

# systemctl status mysqld.service

# grep "password" /var/log/mysqld.log
2019-12-20T01:11:40.325438Z 1 [Note] A temporary password is generated for root@localhost: GpA)9tjfO9fm

# mysql -uroot -p
Enter password:

Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 2
Server version: 5.7.28

Copyright (c) 2000, 2019, 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> set global validate_password_policy=0;
Query OK, 0 rows affected (0.00 sec)

mysql> set global validate_password_length=1;
Query OK, 0 rows affected (0.00 sec)

mysql> ALTER USER 'root'@'localhost' IDENTIFIED BY 'vonedao1234';
Query OK, 0 rows affected (0.00 sec)

mysql> quit
Bye

# yum -y remove mysql57-community-release-el7-10.noarch

# systemctl enable mysqld

# systemctl daemon-reload

# mysql -uroot -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 3
Server version: 5.7.28 MySQL Community Server (GPL)

Copyright (c) 2000, 2019, 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> use mysql;
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A

Database changed
mysql> update user set Host='%' where User='root';
Query OK, 1 row affected (0.00 sec)
Rows matched: 1 Changed: 1 Warnings: 0

mysql> GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' WITH GRANT OPTION;
ERROR 1819 (HY000): Your password does not satisfy the current policy requirements

mysql> set global validate_password_policy=LOW;
Query OK, 0 rows affected (0.00 sec)

mysql> update user set Host='%' where User='root';
Query OK, 0 rows affected (0.00 sec)
Rows matched: 1 Changed: 0 Warnings: 0

允许任何用户以root账户远程连接

mysql> grant all privileges on *.* to 'root'@'%' identified by 'vonedao1234' with grant option;
Query OK, 0 rows affected, 1 warning (0.00 sec)

mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)