When installing the dropbox service in Linux command line, I did compile python 2.6.7 from source, and after that, the yum command line stopped working. As you can see, it is terrible case as I cannot install/update program by yum any more.
So here is the operation system:
[root@server ~]# cat /etc/redhat-release CentOS Linux release 6.0 (Final)
And here is the problem:
#yum 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: ...
Searching over the Internet for this case is really hurt, since there are too many “noised” topics regarding this. So, I finally can overcome this as follows:
The installer for the python2.6 I compiled did something like that on the way
echo "/usr/local/lib" >>/etc/ld.so.conf.d/python26-lib.conf /sbin/ldconfig
Which links shared libraries for python to /usr/local/bin.
Seeing this, it was easy to switch back to the original python libaries
echo "/usr/lib64" >>/etc/ld.so.conf.d/python26-lib.conf /sbin/ldconfig
And, bravo, yum is back