CentOS7.6安裝MySQL5.7

1 下載並安裝MySQL官方的 Yum Repository
[root@localhost ~]# wget -i -c http://dev.mysql.com/get/mysql57-community-release-el7-10.noarch.rpm

[root@localhost ~]# yum -y install mysql57-community-release-el7-10.noarch.rpm

[root@localhost ~]# yum -y install mysql-community-server

2 MySQL數據庫設置
[root@localhost ~]# systemctl start mysqld.service

[root@localhost ~]# systemctl enable mysqld 開機啓動

[root@localhost ~]# systemctl status mysqld.service

[root@localhost ~]# grep "password" /var/log/mysqld.log

[root@localhost ~]# mysql -uroot -p

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

mysql> SHOW VARIABLES LIKE 'validate_password%';
+--------------------------------------+-------+
| Variable_name | Value |
+--------------------------------------+-------+
| validate_password_check_user_name | OFF |
| validate_password_dictionary_file | |
| validate_password_length | 4 |
| validate_password_mixed_case_count | 1 |
| validate_password_number_count | 1 |
| validate_password_policy | LOW |
| validate_password_special_char_count | 1 |
+--------------------------------------+-------+
7 rows in set (0.01 sec)