解决yum锁定Another app is currently holding the yum lock； waiting for it to exit...

完整的报警如下：

Another app is currently holding the yum lock; waiting for it to exit...
  The other application is: PackageKit
    Memory : 168 M RSS (594 MB VSZ)
    Started: Wed Nov 10 23:44:56 2021 - 15:09 ago
    State  : Sleeping, pid: 9687

解决方法

sudo rm -f /var/run/yum.pid

或杀掉进程