linux中yum update被占用(Another app is currently holding the yum lock)的解决办法

问题描述：

在运行yum命令时，提示"Another app is currently holding the yum lock; waiting for it to exit"或"Another app is currently holding the yum lock; waiting for it to exit... " 错误信息，具体内容如下：

Another app is currently holding the yum lock; waiting for it to exit...
The other application is: yum
Memory :  37 M RSS (271 MB VSZ)
Started: Thu Nov 24 11:19:33 2016 - 00:01 ago
State  : Traced/Stopped, pid: 8907
Another app is currently holding the yum lock; waiting for it to exit...
The other application is: yum
Memory :  37 M RSS (271 MB VSZ)
Started: Thu Nov 24 11:19:33 2016 - 00:02 ago
State  : Traced/Stopped, pid: 8907
Another app is currently holding the yum lock; waiting for it to exit...
The other application is: yum
Memory :  37 M RSS (271 MB VSZ)
Started: Thu Nov 24 11:19:33 2016 - 00:03 ago
State  : Traced/Stopped, pid: 8907

解决办法:

1.杀掉yum进程

第一步，查找yum进程的PID

ps -ef | grep yum

得到下面的结果：

root  1985  1650  0 16:42 pts/0 0:00 grep --color=auto yum
root  5804     1  0  2017 ?    00:00:00 /usr/bin/python /usr/bin/yum update

其中5804就是yum进程的PID

第二步，使用kill命令杀掉进程：

kill -9 5804

2.删除yum的pid文件

rm -f /var/run/yum.pid

示例操作:

第一种情况，通过杀掉yum进程的方式来解决问题。

ps -ef | grep yum
# 得到yum进程的PID
kill -9 5804

第二种情况，通过删除yum的pid文件来解决问题。

rm -f /var/run/yum.pid

注意：

以上两种方法都需要用root用户执行。