查看系统中是否已安装 MySQL 服务

yum list installed | grep mysql

下载 mysql57的 yum 源

wget http://repo.mysql.com/mysql57-community-release-el7-8.noarch.rpm

查看下载

ll

安装源

rpm -ivh mysql57-community-release-el7-8.noarch.rpm

安装 MySQL

yum install mysql-server

yum install mysql-server  --nodeps

一堆满满安装

启动mysql

service mysqld start

查看mysql启动

ps -ef | grep mysql

查看初始化密码

grep "password" /var/log/mysqld.log

 登录到 MySQL 服务端

mysql -u root -p

更新用户 root 的密码

SET PASSWORD = PASSWORD('chengxuyuan');

ALTER USER 'root'@'localhost' PASSWORD EXPIRE NEVER;

flush privileges;

设置用户 root 可以在任意 IP 下被访问

grant all privileges on *.* to root@"%" identified by "chengxuyuan";

刷新权限

MySQL控制命令

• 启动 ：service mysqld start
• 停止：service mysqld stop
• 重启：service mysqld restart
• 查看状态：service mysqld status

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问题1：源 "MySQL 5.7 Community Server" 的 GPG 密钥已安装，但是不适用于此软件包。请检查源的公钥 URL 是否配置正确。

总计：220 M
Is this ok [y/d/N]: y
Downloading packages:
警告：/var/cache/yum/x86_64/7/mysql57-community/packages/mysql-community-libs-5.7.44-1.el7.x86_64.rpm: 头V4 RSA/SHA256 Signature, 密钥 ID 3a79bd29: NOKEY
从 file:///etc/pki/rpm-gpg/RPM-GPG-KEY-mysql 检索密钥


源 "MySQL 5.7 Community Server" 的 GPG 密钥已安装，但是不适用于此软件包。请检查源的公钥 URL 是否配置正确。


 失败的软件包是：mysql-community-libs-5.7.44-1.el7.x86_64
 GPG  密钥配置为：file:///etc/pki/rpm-gpg/RPM-GPG-KEY-mysql

执行命令

rpm --import https://repo.mysql.com/RPM-GPG-KEY-mysql-2022

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