安装centos7 安装mysql，出现报错MySQL 8.0 Community Server“ repository are already installed but they are not

前置：安装mysql8.0

2.  下载mysql rpm包    wget https://dev.mysql.com/get/mysql80-community-release-el7-1.noarch.rpm
3.  安装源         yum localinstall mysql80-community-release-el7-1.noarch.rpm
4.  检测是否安装成功      yum repolist enabled | grep "mysql.*-community.*"
5.  安装MySQL     yum install mysql-community-server

执行到第5条的时候报错，报错信息如下

Downloading packages:
warning: /var/cache/yum/x86_64/7/mysql80-community/packages/mysql-community-libs-8.0.32-1.el7.x86_64.rpm: Header V4 RSA/SHA256 Signature, key ID 3a79bd29: NOKEY
Retrieving key from file:///etc/pki/rpm-gpg/RPM-GPG-KEY-mysql


The GPG keys listed for the "MySQL 8.0 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-libs-8.0.32-1.el7.x86_64
 GPG Keys are configured as: file:///etc/pki/rpm-gpg/RPM-GPG-KEY-mysql

解决方式参考这位老哥博客，添加链接描述
我用了第一种方式

cd /etc/pki/rpm-gpg/

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

修改此文件

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

在文件中找到mysql8.0

然后继续安装mysql

yum install mysql-community-server

启动mysql

systemctl start mysqld