Cloudera CDH3 installation failure, how to get around this?
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I am attempting to install CHD3 onto a 3 node cluster.  I launch the installations via the Cloudera Manager.  All three installations fail. 

I see this error after the Cloudera installation fails in /var/log/cloudera-scm-agent/cloudera-scm-agent.out:

      File "/usr/lib64/cmf/agent/src/cmf/agent.py", line 19, in <module>
        import psutil
      File "/usr/lib64/cmf/agent/build/env/lib/python2.6/site-packages/psutil-0.3.0-py2.6-linux-x86_64.egg/psutil/__init__.py", line 84, in <module>
        TOTAL_PHYMEM = _psplatform.phymem_usage()[0]
      File "/usr/lib64/cmf/agent/build/env/lib/python2.6/site-packages/psutil-0.3.0-py2.6-linux-x86_64.egg/psutil/_pslinux.py", line 122, in phymem_usage
        percent = usage_percent(total - (free + buffers + cached), total,
    TypeError: unsupported operand type(s) for +: 'int' and 'NoneType'

Apparently the Python interpreter running on start up sees "free", "buffers", or "cached" as having a NoneType and this error causes the entire installation to roll back.

Can anyone advise as to why this occurs and/or a way around the problem?

Thanks in advance.