centos7下mysql5.7的安装

Posted 2021-03-14 jenkins

1.通过yum repository安装，地址https://dev.mysql.com/downloads/repo/yum/
2.下载rpm文件

wget https://dev.mysql.com/get/mysql80-community-release-el7-3.noarch.rpm

3.可以参考https://dev.mysql.com/doc/mysql-yum-repo-quick-guide/en/安装mysql5.7
4.Adding the MySQL Yum Repository

rpm -Uvh mysql80-community-release-el7-3.noarch.rpm

[root@iZbp1gg50ddqbgxf1jpqwwZ home]# rpm -Uvh mysql80-community-release-el7-3.noarch.rpm
warning: mysql80-community-release-el7-3.noarch.rpm: Header V3 DSA/SHA1 Signature, key ID 5072e1f5: NOKEY
Preparing...                          ################################# [100%]
Updating / installing...
   1:mysql80-community-release-el7-3  ################################# [100%]

5.查看现在mysql版本

[root@iZbp1gg50ddqbgxf1jpqwwZ home]# [root@iZbp1gg50ddqbgxf1jpqwwZ home]# yum repolist all | grep mysql
mysql-cluster-7.5-community/x86_64 MySQL Cluster 7.5 Community   disabled
mysql-cluster-7.5-community-source MySQL Cluster 7.5 Community - disabled
mysql-cluster-7.6-community/x86_64 MySQL Cluster 7.6 Community   disabled
mysql-cluster-7.6-community-source MySQL Cluster 7.6 Community - disabled
mysql-cluster-8.0-community/x86_64 MySQL Cluster 8.0 Community   disabled
mysql-cluster-8.0-community-source MySQL Cluster 8.0 Community - disabled
mysql-connectors-community/x86_64  MySQL Connectors Community    enabled:     42
mysql-connectors-community-source  MySQL Connectors Community -  disabled
mysql-tools-community/x86_64       MySQL Tools Community         enabled:     19
mysql-tools-community-source       MySQL Tools Community - Sourc disabled
mysql-tools-preview/x86_64         MySQL Tools Preview           disabled
mysql-tools-preview-source         MySQL Tools Preview - Source  disabled
mysql55-community/x86_64           MySQL 5.5 Community Server    disabled
mysql55-community-source           MySQL 5.5 Community Server -  disabled
mysql56-community/x86_64           MySQL 5.6 Community Server    disabled
mysql56-community-source           MySQL 5.6 Community Server -  disabled
mysql57-community/x86_64           MySQL 5.7 Community Server    disabled
mysql57-community-source           MySQL 5.7 Community Server -  disabled
mysql80-community/x86_64           MySQL 8.0 Community Server    enabled:     49
mysql80-community-source           MySQL 8.0 Community Server -  disabled

6.选择自己所需的版本，如5.7

 yum-config-manager --disable mysql80-community
 yum-config-manager --enable mysql57-community

7.如果没有yum-config-manager指令

yum -y install yum-utils 

8.查看现在启用的mysql版本

[root@iZbp1gg50ddqbgxf1jpqwwZ home]# yum repolist all | grep mysql
Not using downloaded mysql-connectors-community/repomd.xml because it is older than what we have:
  Current   : Fri Jan 10 23:51:55 2020
  Downloaded: Fri Jan 10 23:51:49 2020
Not using downloaded mysql-tools-community/repomd.xml because it is older than what we have:
  Current   : Sat Jan 11 02:32:38 2020
  Downloaded: Sat Jan 11 02:32:21 2020
mysql-cluster-7.5-community/x86_64 MySQL Cluster 7.5 Community   disabled
mysql-cluster-7.5-community-source MySQL Cluster 7.5 Community - disabled
mysql-cluster-7.6-community/x86_64 MySQL Cluster 7.6 Community   disabled
mysql-cluster-7.6-community-source MySQL Cluster 7.6 Community - disabled
mysql-cluster-8.0-community/x86_64 MySQL Cluster 8.0 Community   disabled
mysql-cluster-8.0-community-source MySQL Cluster 8.0 Community - disabled
mysql-connectors-community/x86_64  MySQL Connectors Community    enabled:     42
mysql-connectors-community-source  MySQL Connectors Community -  disabled
mysql-tools-community/x86_64       MySQL Tools Community         enabled:     19
mysql-tools-community-source       MySQL Tools Community - Sourc disabled
mysql-tools-preview/x86_64         MySQL Tools Preview           disabled
mysql-tools-preview-source         MySQL Tools Preview - Source  disabled
mysql55-community/x86_64           MySQL 5.5 Community Server    disabled
mysql55-community-source           MySQL 5.5 Community Server -  disabled
mysql56-community/x86_64           MySQL 5.6 Community Server    disabled
mysql56-community-source           MySQL 5.6 Community Server -  disabled
mysql57-community/x86_64           MySQL 5.7 Community Server    enabled:    404
mysql57-community-source           MySQL 5.7 Community Server -  disabled
mysql80-community/x86_64           MySQL 8.0 Community Server    disabled
mysql80-community-source           MySQL 8.0 Community Server -  disabled

9.查看支持的mysql仓库

 cat /etc/yum.repos.d/mysql-community.repo

10.开始安装

yum install mysql-community-server

11.开机启动

systemctl enable mysqld

12.查看是否启动

systemctl list-unit-files |grep 'mysql*'

13.查看随机密码

more /var/log/mysqld.log

2020-01-20T09:07:17.899328Z 1 [Note] A temporary password is generated for root@localhost: 1Xl(r!s4S0jx

14.登录mysql

mysql -u root -p
输入密码

15.修改密码

在执行指令前必须修改密码 不然会报错

ERROR 1820 (HY000): You must reset your password using ALTER USER statement before executing this statement.

又提示密码太简单了

mysql> alter user 'root'@'localhost' identified by '123456';
ERROR 1819 (HY000): Your password does not satisfy the current policy requirements

所以先设置一个复杂密码，修改密码策略后再修改成简单密码

查看密码策略，这里要求长度为8，有大小写，特殊字符，策略中等。
mysql> show variables like '%password%';
+----------------------------------------+-----------------+
| Variable_name                          | Value           |
+----------------------------------------+-----------------+
| default_password_lifetime              | 0               |
| disconnect_on_expired_password         | ON              |
| log_builtin_as_identified_by_password  | OFF             |
| mysql_native_password_proxy_users      | OFF             |
| old_passwords                          | 0               |
| report_password                        |                 |
| sha256_password_auto_generate_rsa_keys | ON              |
| sha256_password_private_key_path       | private_key.pem |
| sha256_password_proxy_users            | OFF             |
| sha256_password_public_key_path        | public_key.pem  |
| 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               |
+----------------------------------------+-----------------+
17 rows in set (0.13 sec)

修改策略后重新设置密码

set global validate_password_length = 6 
set global validate_password_policy = LOW;
alter user 'root'@'localhost' identified by '123456';

16.退出登录试下新密码

quit
mysql -u root -p 

输入密码：123456 登录成功

17.开启远程登录权限

grant all privileges  on *.* to root@'%' identified by "123456";
flush privileges; 刷新

第一个* 数据库    
第二个* 表  
root 用户  
% 所有id  

18.其他指令

show databases; 查看所有数据库
use mysql; 指定操作的数据库
show tables； 查看所有表
desc  table_name; 查看表结构
select host,user,authentication_string from user; 查看用户表