【Centos安装mysql】

• centos更换yum源修改成阿里源
• 【联网】yum下载&安装mysql
• • 版本问题
  • mysql默认的四个数据库
• 【无联网】下压缩包或者二进制包需要编译

centos更换yum源修改成阿里源

https://blog.csdn.net/m0_64284147/article/details/126257728

【联网】yum下载&安装mysql

https://blog.csdn.net/m0_67392010/article/details/126034669

版本问题

The GPG keys listed for the "MySQL 5.7 Community Server" repository are already installed but they are not correct for this package.
Check that the correct key URLs are configured for this repository.Failing package is: mysql-community-server-5.7.37-1.el7.x86_64GPG Keys are configured as: file:///etc/pki/rpm-gpg/RPM-GPG-KEY-mysql

解决：

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

https://blog.csdn.net/Jaeger_Java/article/details/124425409

mysql默认的四个数据库

https://blog.csdn.net/u010704350/article/details/122755825

【无联网】下压缩包或者二进制包需要编译