Linux安裝MySQL(清華大學鏡像源)

1.下載並安裝MySQL官方的 Yum Repository

//下載 [root@localhost ~]# wget http://dev.mysql.com/get/mysql57-community-release-el7-10.noarch.rpm //安裝 [root@localhost ~]# yum -y install mysql57-community-release-el7-10.noarch.rpm 

2.更換repo倉庫里的連接開源軟件鏡像站

 

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[mysql-connectors-community] name=MySQL Connectors Community baseurl=https://mirrors.tuna.tsinghua.edu.cn/mysql/yum/mysql-connectors-community-el7-$basearch/ enabled=1 gpgcheck=1 gpgkey=https://repo.mysql.com/RPM-GPG-KEY-mysql 
[mysql-tools-community]
 name=MySQL Tools Community
 baseurl=https://mirrors.tuna.tsinghua.edu.cn/mysql/yum/mysql-tools-community-el7-$basearch/
 enabled=1
 gpgcheck=1
 gpgkey=https://repo.mysql.com/RPM-GPG-KEY-mysql
 
[mysql-5.6-community]
 name=MySQL 5.6 Community Server
 baseurl=https://mirrors.tuna.tsinghua.edu.cn/mysql/yum/mysql-5.6-community-el7-$basearch/
 enabled=0
 gpgcheck=1
 gpgkey=https://repo.mysql.com/RPM-GPG-KEY-mysql
 
[mysql-5.7-community]
 name=MySQL 5.7 Community Server
 baseurl=https://mirrors.tuna.tsinghua.edu.cn/mysql/yum/mysql-5.7-community-el7-$basearch/
 enabled=1
 gpgcheck=1
 gpgkey=https://repo.mysql.com/RPM-GPG-KEY-mysql
 
[mysql-8.0-community]
 name=MySQL 8.0 Community Server
 baseurl=https://mirrors.tuna.tsinghua.edu.cn/mysql/yum/mysql-8.0-community-el7-$basearch/
 enabled=0//默認安裝最新版本，因為自己要安裝5.7，所有把enabled=1改成enabled=0
 gpgcheck=1
 gpgkey=https://repo.mysql.com/RPM-GPG-KEY-mysql
 

3.安裝MySQL

 sudo yum install -y mysql-community-server

4.啟動MySQL

sudo service mysqld start

5.查看MySQL服務狀態

sudo service mysqld status

 

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6.初始化MySQL

查看初始化密碼：
sudo grep 'temporary password' /var/log/mysqld.log

 

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使用初始密碼進行登錄：
mysql -u root -p

 

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初始化密碼
ALTER USER 'root'@'localhost' IDENTIFIED BY '初始化密碼';

7.設置MySQL密碼策略

查詢MySQL初始的密碼策略

 SHOW VARIABLES LIKE 'validate_password%'; 

 

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修改密碼驗證強度

set global validate_password_policy=LOW; 

修改密碼長度

set global validate_password_length=6; 

設置簡單密碼

ALTER USER 'root'@'localhost' IDENTIFIED BY '123456';

8.設置MySQL遠程連接，在sql里面設置

//這里設置登錄密碼和遠程連接密碼都是123456 GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY '123456' WITH GRANT OPTION; //刷新權限 FLUSH PRIVILEGES; 

9.設置 MySQL開機啟動

systemctl enable mysqld

設置3306端口開放

firewall-cmd --zone=public --add-port=3306/tcp --permanent //重啟防火牆 firewall-cmd --reload //驗證3306是否開放成功 firewall-cmd --zone=public --query-port=3306/tcp 

10.遠程連接