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

錯(cuò)誤重現(xiàn)：

Existing lock /var/run/yum.pid: another copy is running
as pid 8706.
Another app is currently holding the yum lock; waiting
for it to exit...
The other application is: PackageKit
Memory : 104 M RSS (521 MB VSZ)
Started: Sat Mar 23 15:04:42 2019 - 00:59 ago
State : Sleeping, pid: 8706
Another app is currently holding the yum lock; waiting
for it to exit...
The other application is: PackageKit
Memory : 104 M RSS (521 MB VSZ)
Started: Sat Mar 23 15:04:42 2019 - 01:01 ago
State : Sleeping, pid: 8706
Another app is currently holding the yum lock; waiting
for it to exit...
The other application is: PackageKit
Memory : 104 M RSS (521 MB VSZ)
Started: Sat Mar 23 15:04:42 2019 - 01:03 ago
State : Sleeping, pid: 8706
......

出現(xiàn)以上問題的主要原因在于：另外一個(gè)應(yīng)用正在鎖住進(jìn)程鎖。waiting for it to exit... 意為該應(yīng)用等待解鎖。此外，由上圖可知，yum的pid號(hào)為8706。

解決方案：

[root@itheima ~]# rm -f /var/run/yum.pid

下面是黑馬程序員公開的幾套視頻教程，可以跟著學(xué)習(xí)學(xué)習(xí)，如果想深入學(xué)習(xí)，轉(zhuǎn)到運(yùn)維行業(yè)，建議報(bào)班學(xué)習(xí)黑馬程序員linux云計(jì)算+運(yùn)維開發(fā)培訓(xùn)課程。