centos7 國內鏡像yum安裝mysql5.7

https://www.cnblogs.com/ccsert/p/12296213.html

檢查mysql環境是否已存在

雖然我的是純凈系統，但別人的不能保證，為了避免發生什么問題我們還是先檢查下mysql是否已經安裝過

[root@localhost ~] # rpm -qa | grep mysql [root@localhost ~]# rpm -qa |grep mariadb mariadb-libs-5.5.64-1.el7.x86_64

我這里要卸載mariadb

[root@localhost ~]# yum remove mariadb-libs-5.5.64-1.el7.x86_64

假如你發現類似的就和我一樣刪除就好了

切換阿里雲鏡像源

先安裝wget

[root@localhost ~] # yum install wget -y

然后下載阿里雲yum源配置

[root@localhost ~] # wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo

然后生成緩存

[root@localhost ~] # yum makecache

顯視元數據緩存已建立就代表完成了

然后我們更新一下yum

[root@localhost ~] # yum update -y

這可能需要一點時間，耐心等待一下

下載國內的mysql rpm包並安裝

地址為http://mirrors.ustc.edu.cn/mysql-ftp/Downloads
我這里直接通過下載地址下載

先是server包

[root@localhost ~] # wget http://mirrors.ustc.edu.cn/mysql-ftp/Downloads/MySQL-5.7/mysql-community-server-5.7.32-1.el7.x86_64.rpm

然后是client包

wget http://mirrors.ustc.edu.cn/mysql-ftp/Downloads/MySQL-5.7/mysql-community-client-5.7.32-1.el7.x86_64.rpm

還有common

[root@localhost ~] # wget http://mirrors.ustc.edu.cn/mysql-ftp/Downloads/MySQL-5.7/mysql-community-common-5.7.32-1.el7.x86_64.rpm

最后還有一個lib

[root@localhost ~] # wget http://mirrors.ustc.edu.cn/mysql-ftp/Downloads/MySQL-5.7/mysql-community-libs-5.7.32-1.el7.x86_64.rpm

在此之前我們還要先安裝三個依賴環境
net-tools.x86_64，libaio.x86_64，perl.x86_64

我們直接使用yum安裝

yum install -y perl.x86_64 yum install -y libaio.x86_64 yum install -y net-tools.x86_64

然后按照順序安裝mysql的依賴

[root@localhost ~]# rpm -ivh mysql-community-common-5.7.32-1.el7.x86_64.rpm

[root@localhost ~]# rpm -ivh mysql-community-libs-5.7.32-1.el7.x86_64.rpm

[root@localhost ~]# rpm -ivh mysql-community-client-5.7.32-1.el7.x86_64.rpm

[root@localhost ~]# rpm -ivh mysql-community-server-5.7.32-1.el7.x86_64.rpm

然后我們重啟下mysql服務

[root@localhost ~] # service mysqld.service restart

我們查看下默認密碼

[root@localhost etc] # grep 'temporary password' /var/log/mysqld.log

2020-02-11T09:49:32.224110Z 1 [Note] A temporary password is generated for root@localhost: E;#ySql0!>

我的密碼為 E;#ySql0!>

[root@localhost mysql] # mysql -u root -p Enter password: Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 10 Server version: 5.7.25 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>

登錄成功，接着改下密碼和遠程連接

修改密碼並開啟遠程連接

修改密碼

這里因為mysql的新版本限制了密碼復雜度，所以我們需要設置一個稍微復雜的密碼

mysql> set password=password('這里輸入你想改的密碼'); Query OK, 0 rows affected, 1 warning (0.00 sec)

密碼需要包含數字和特殊符號，以及大寫字母和小寫字母
當然你設置完成以后可以就將密碼限制關閉后在重新改密碼，這里不過多演示

開啟遠程連接

打開mysql數據庫

mysql> use mysql;

修改一條數據使其支持遠程連接

mysql> update user set Host = '%' where Host = 'localhost' and User='root';

刷新系統權限相關表

mysql> flush privileges;