云服务器CentOS 7.2安装MySql 5.7
2021/11/21 19:39:58
本文主要是介绍云服务器CentOS 7.2安装MySql 5.7,对大家解决编程问题具有一定的参考价值,需要的程序猿们随着小编来一起学习吧!
1. 下载rpm包
[root@VM_0_5_centos home]# wget http://repo.mysql.com//mysql57-community-release-el7-9.noarch.rpm
2. 下载安装软件源
[root@VM_0_5_centos home]# yum localinstall mysql57-community-release-el7-9.noarch.rpm
3. 查看系统是否添加该源
[root@VM_0_5_centos home]# yum repolist all | grep mysql
4. 安装MySql
[root@VM_0_5_centos home]# yum install mysql-community-server.x86_64
5. 启动MySql Server
#启动Mysql [root@VM_0_5_centos home]# systemctl start mysqld #查看启动状态 [root@VM_0_5_centos home]# systemctl status mysqld
6. 查看MySQL随机临时密码
[root@VM_0_5_centos home]# grep 'temporary password' /var/log/mysqld.log
7. 修改MySql密码
[root@VM_0_5_centos home]# mysql_secure_installation
MySQL里带了一个密码验证的插件来防止密码设置过于简单。
密码要求:
特殊字符
大小写字母
数字
长度8位
实例密码:Fangchy1120.!
8. 登录MySql修改密码
[root@VM_0_5_centos home]# mysql -uroot -p
原来MySQL5.6.6版本之后增加了密码强度验证插件validate_password,相关参数设置的较为严格。 使用了该插件会检查设置的密码是否符合当前设置的强度规则,若不满足则拒绝设置。影响的语句和函数有:create user,grant,set password,password(),old password。
-
查看mysql全局参数
mysql> SHOW VARIABLES LIKE 'validate_password%'; +--------------------------------------+--------+ | Variable_name | Value | +--------------------------------------+--------+ | validate_password_check_user_name | OFF | | validate_password_dictionary_file | | | validate_password_length | 8 | | validate_password_mixed_case_count | 1 | | validate_password_number_count | 1 | | validate_password_policy | MEDIUM | | validate_password_special_char_count | 1 | +--------------------------------------+--------+ 7 rows in set (0.00 sec)
-
参数解释
-
validate_password_dictionary_file
插件用于验证密码强度的字典文件路径。
-
validate_password_length
密码最小长度,参数默认为8,它有最小值的限制,最小值为:validate_password_number_count + validate_password_special_char_count + (2 * validate_password_mixed_case_count)
-
validate_password_mixed_case_count
密码至少要包含的小写字母个数和大写字母个数。
-
validate_password_number_count
密码至少要包含的数字个数。
-
validate_password_policy
密码强度检查等级,0/LOW、1/MEDIUM、2/STRONG。有以下取值:
Policy Tests Performed 0 or LOW Length 1 or MEDIUM Length; numeric, lowercase/uppercase, and special characters 2 or STRONG Length; numeric, lowercase/uppercase, and special characters; dictionary file 默认是1,即MEDIUM,所以刚开始设置的密码必须符合长度,且必须含有数字,小写或大写字母,特殊字符。
-
validate_password_special_char_count
密码至少要包含的特殊字符数。
-
-
修改上面的各项参数,全部执行成功
mysql> set global validate_password_policy=0; Query OK, 0 rows affected (0.00 sec) mysql> set global validate_password_mixed_case_count=0; Query OK, 0 rows affected (0.00 sec) mysql> set global validate_password_number_count=3; Query OK, 0 rows affected (0.00 sec) mysql> set global validate_password_special_char_count=0; Query OK, 0 rows affected (0.00 sec) mysql> set global validate_password_length=3; Query OK, 0 rows affected (0.00 sec)
-
查看修改后的参数
mysql> show variables like 'validate_password%'; +--------------------------------------+-------+ | Variable_name | Value | +--------------------------------------+-------+ | validate_password_check_user_name | OFF | | validate_password_dictionary_file | | | validate_password_length | 3 | | validate_password_mixed_case_count | 0 | | validate_password_number_count | 3 | | validate_password_policy | LOW | | validate_password_special_char_count | 0 | +--------------------------------------+-------+ 7 rows in set (0.00 sec)
-
修改成简单密码
mysql> SET PASSWORD FOR 'root'@'localhost' = PASSWORD('123'); Query OK, 0 rows affected, 1 warning (0.00 sec)
-
使用新密码登录
[root@VM_0_5_centos ~]# mysql -uroot -p Enter password: Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 16 Server version: 5.7.24 MySQL Community Server (GPL) Copyright (c) 2000, 2018, 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.
-
配置远程连接(腾讯云不需要配置端口)
#查看mysql端口 [root@VM_0_5_centos ~]# netstat -ntlp|grep 3306 tcp6 0 0 :::3306 :::* LISTEN 13929/mysqld
#配置远程连接,赋予任何主机上以root身份访问数据的权限 mysql> GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY '123456' WITH GRANT OPTION; Query OK, 0 rows affected, 1 warning (0.00 sec) mysql> flush privileges; Query OK, 0 rows affected (0.00 sec)
这篇关于云服务器CentOS 7.2安装MySql 5.7的文章就介绍到这儿,希望我们推荐的文章对大家有所帮助,也希望大家多多支持为之网!
- 2024-11-16MySQL资料:新手入门教程
- 2024-11-16MySQL资料:新手入门教程
- 2024-11-15MySQL教程:初学者必备的MySQL数据库入门指南
- 2024-11-15MySQL教程:初学者必看的MySQL入门指南
- 2024-11-04部署MySQL集群项目实战:新手入门教程
- 2024-11-04如何部署MySQL集群资料:新手入门指南
- 2024-11-02MySQL集群项目实战:新手入门指南
- 2024-11-02初学者指南:部署MySQL集群资料
- 2024-11-01部署MySQL集群教程:新手入门指南
- 2024-11-01如何部署MySQL集群:新手入门教程