安装keepalived时报：The GPG keys listed for the "MySQL 8.0 Community Server" repository are alr

参考链接：

执行 yum -y install keepalived 时报：The GPG keys listed for the "MySQL 8.0 Community Server" repository are already installed but they are not correct for this package.

导致 无法安装 keepalived

解决：

如果已安装 mysql8，就跳过 检查数字签名，执行 ：yum -y install keepalived --nogpgcheck  进行安装

查看已安装服务列表：systemctl list-unit-files --type=service

启动：systemctl start keepalived

验证： ip addr