centos yum Existing lock /var/run/yum.pid: another copy is running as pid 12498

在运行yum install的时候出现如下错误

Existing lock /var/run/yum.pid: another copy is running as pid 12498

错误原因是yum正在运行或者正在自动更新

解决方法把进程关掉

 rm -f    /var/run/yum.pid