CentOS7---yum提示Another app is currently holding the yum lock; waiting for it to exit...

使用yum安裝計划任務功能，結果提示：Another app is currently ...........

# yum -y install vixie-cron
Loaded plugins: fastestmirror, refresh-packagekit, security
Existing lock /var/run/yum.pid: another copy is running as pid 25960.
Another app is currently holding the yum lock; waiting for it to exit...

可能是系統自動升級正在運行，yum在鎖定狀態中。 
已經有一個yum進程在運行了，使用kill干掉它：

# kill -s 9 25960
# ps aux|grep yum
root      6744  0.0  0.0 103260   900 pts/1    S+   14:59   0:00 grep yum
root     25960  0.0  0.0      0     0 ?        Z    Sep19   0:01 [yumBackend.py] <defunct>

很遺憾，kill對付不了它，那怎么辦呢？

可以通過強制關掉yum進程：

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

然后就可以使用yum了。

 

該本摘自互聯網。