Big Data for Small Business

I have said it before and will say it again you don’t have to be fortune 500 company to use Big Data. Big Data is more about understanding your data, then it is about how big it is and understanding all your different data sources and gathering them into one place, so that you can analyze and understand it better.

CentOS 6.4 service virt-who won’t start – work around

Here is the problem.

[root@bob ~]# service virt-who start

Démarrage de virt-who : Traceback (most recent call last):

File “/usr/share/virt-who/”, line 33, in <module>

from subscriptionmanager import SubscriptionManager, SubscriptionManagerError

File “/usr/share/virt-who/”, line 24, in <module>

import rhsm.connection as rhsm_connection

ImportError: No module named rhsm.connection



There is a simple work around. Install the Scientific Linux 6 python-rhsm package.


Name : python-rhsm

Version : 1.1.8 Vendor : Scientific Linux

Release : 1.el6 Date : 2013-02-22 01:54:26

Group : Development/Libraries Source RPM : python-rhsm-1.1.8-1.el6.src.rpm

Size : 0.27 MB

Packager : Scientific Linux

Summary : A Python library to communicate with a Red Hat Unified Entitlement Platform

Description :

A small library for communicating with the REST interface of a Red Hat Unified

Entitlement Platform. This interface is used for the management of system

entitlements, certificates, and access to content.


First install python-simplejson


[root@bob ~]# yum install python-simplejson


Then pick a mirror from and download python-rhsm-1.1.8-1.el6.x86_64.rpm and install it


[root@bob ~]# rpm –install python-rhsm-1.1.8-1.el6.x86_64.rpm


Then start virt-who


[root@bob ~]# service virt-who start