python 升级到2.7.8 导致yum 运行异常：No module named yum

os version：

[[email protected] etc]# cat redhat-release

Red Hat Enterprise Linux Server release 5.4 (Tikanga)

---运行yum 报错

[[email protected] ~]# yum install dialog

There was a problem importing one of the Python modules

required to run yum. The error leading to this problem was:

No module named yum

Please install a package which provides this module, or

verify that the module is installed correctly.

It‘s possible that the above module doesn‘t match the

current version of Python, which is:

2.7.8 (default, Jul 16 2014, 08:48:25)

[GCC 4.1.2 20080704 (Red Hat 4.1.2-52)]

If you cannot solve this problem yourself, please go to

the yum faq at:

http://wiki.linux.duke.edu/YumFaq

[[email protected] ~]# rpm -qa |grep yum

yum-security-1.1.16-21.el5

yum-updatesd-0.9-2.el5

yum-metadata-parser-1.1.2-3.el5

yum-3.2.22-39.0.2.el5

yum-rhn-plugin-0.5.4-26.0.1.el5

[[email protected] ~]# whereis python

python: /usr/bin/python2.4 /usr/bin/python /usr/lib/python2.4 /usr/include/python2.4 /usr/share/man/man1/python.1.gz

[[email protected] ~]# which yum

/usr/bin/yum

[[email protected] ~]# vi /usr/bin/yum

#!/usr/bin/python2.4   ----这一行需要修改为 /usr/bin/python2.4

import sys

try:

。。。。

"/usr/bin/yum" 32L, 806C written

-----再次运行yum 正常运行

[[email protected] ~]# yum install list

Loaded plugins: rhnplugin, security

This system is not registered with ULN.

ULN support will be disabled.

file:///media/oel/Server/repodata/repomd.xml: [Errno 5] OSError: [Errno 2] No such file or directory: ‘/media/oel/Server/repodata/repomd.xml‘

Trying other mirror.

Setting up Install Process

No package list available.

---- 同时也更新下/usr/sbin/yum-updatesd

[[email protected] etc]# vi /usr/sbin/yum-updatesd

#!/usr/bin/python2.4 -tt

---重启服务

[[email protected] etc]# service yum-updatesd restart

Stopping yum-updatesd: [FAILED]

Starting yum-updatesd: [  OK  ]