Description of problem:


Version-Release number of selected component (if applicable):


How reproducible:


Steps to Reproduce:
1.Used folloing two templates for image build/push both are failing 


[psharma@dhcp193-66 ~]$ cat /home/psharma/RHEL6.2_Template.xml
<?xml version="1.0" encoding="UTF-8"?>
<template>
<name>RHEL6-2</name>
<description>A Red Hat Enterprise Linux 6.2 image</description>
<os>
<rootpw>password</rootpw>
<name>RHEL-6</name>
<version>2</version>
<arch>x86_64</arch>
<install type="url">
<url>http://download.eng.pnq.redhat.com/pub/rhel/released/RHEL-6/6.2/Server/x86_64/os</url>
</install>
</os>
</template>


[psharma@dhcp193-66 ~]$ cat /home/psharma/fedora15_temp.xml
<?xml version="1.0"?>
  <template>
      <name>Fedora 15</name>
      <description>desc</description>
      <os>
        <rootpw>password</rootpw>
        <name>Fedora</name>
        <arch>x86_64</arch>
        <version>15</version>
        <install type="url">
          <url>http://download.fedoraproject.org/pub/fedora/linux/releases/15/Fedora/x86_64/os/</url>
        </install>
      </os>
      <repositories>
        <repository name="custom">
          <url>http://repos.fedorapeople.org/repos/aeolus/demo/webapp/</url>
          <signed>false</signed>
        </repository>
      </repositories>
  </template> 
The behaviour seems intermitent.It failed to build rhel6.2 for rhevm but build the image of fed15 on same rhevm host for which it was complaining for "kvm not supported".  
PFA for complete image factory logs .

I am using these templates since ages, so i dont feel there is problem with that. Here is what imagesfactory logs says :-


temporary security group (imagefactory-3506defc-e6f6-424e-b266-0c3d01966699)
2012-09-20 23:43:09,476 DEBUG imgfac.builders.BaseBuilder.RHEL6_ec2_Builder thread(3506defc) Message: Exception caught in ImageFactory
2012-09-20 23:43:09,476 DEBUG imgfac.builders.BaseBuilder.RHEL6_ec2_Builder thread(3506defc) Message: Traceback (most recent call last):
  File "/usr/lib/python2.6/site-packages/imgfac/builders/Fedora_ec2_Builder.py", line 458, in push_image
    credentials)
  File "/usr/lib/python2.6/site-packages/imgfac/builders/Fedora_ec2_Builder.py", line 665, in push_image_snapshot_ec2
    self.guest.do_customize(guestaddr)
  File "/usr/lib/python2.6/site-packages/oz/RedHat.py", line 1110, in do_customize
    tunnels=self.tunnels)
  File "/usr/lib/python2.6/site-packages/imgfac/builders/RHEL6_ec2_Builder.py", line 31, in guest_execute_command
    return super(RHEL6RemoteGuest, self).guest_execute_command(guestaddr, command, timeout, tunnels)
  File "/usr/lib/python2.6/site-packages/oz/RedHat.py", line 476, in guest_execute_command
    command, timeout, tunnels)
  File "/usr/lib/python2.6/site-packages/oz/ozutil.py", line 355, in ssh_execute_command
    return subprocess_check_output(cmd)
  File "/usr/lib/python2.6/site-packages/oz/ozutil.py", line 323, in subprocess_check_output
    raise SubprocessException("'%s' failed(%d): %s" % (cmd, retcode, stderr), retcode)
SubprocessException: 'ssh -i /tmp/tmpe2OJZK -F /dev/null -o ServerAliveInterval=30 -o StrictHostKeyChecking=no -o ConnectTimeout=30 -o UserKnownHostsFile=/dev/null -o PasswordAuthentication=no root.compute.amazonaws.com yum -y install "aeolus-audrey-agent" ' failed(1): Warning: Permanently added 'ec2-54-251-1-116.ap-southeast-1.compute.amazonaws.com,54.251.1.116' (RSA) to the list of known hosts.
Error: Nothing to do


2012-09-20 23:43:09,476 DEBUG imgfac.BuildJob.BuildJob thread(3506defc) Message: Builder (3506defc-e6f6-424e-b266-0c3d01966699) changed status from PUSHING to FAILED
2012-09-20 23:43:09,477 DEBUG imgfac.BuildJob.BuildJob thread(3506defc) Message: 3506defc-e6f6-424e-b266-0c3d01966699 for ec2 about to exit ec2 queue...
2012-09-20 23:43:09,477 DEBUG imgfac.ReservationMan



012-09-17 22:43:00,954 DEBUG imgfac.builders.BaseBuilder.RHEL6_rhevm_Builder thread(88f9cbd4) Message: Found neither a call-time config nor a config file - doing nothing
2012-09-17 22:43:00,975 DEBUG oz.Guest.RHEL6Guest thread(88f9cbd4) Message: libvirt bridge name is virbr0
2012-09-17 22:43:00,976 DEBUG imgfac.builders.BaseBuilder.RHEL6_rhevm_Builder thread(88f9cbd4) Message: Exception caught in ImageFactory
2012-09-17 22:43:00,977 DEBUG imgfac.builders.BaseBuilder.RHEL6_rhevm_Builder thread(88f9cbd4) Message: Traceback (most recent call last):
  File "/usr/lib/python2.6/site-packages/imgfac/builders/Fedora_rhevm_Builder.py", line 66, in build_image
    self.build_upload(build_id)
  File "/usr/lib/python2.6/site-packages/imgfac/builders/Fedora_rhevm_Builder.py", line 93, in build_upload
    guest = oz.GuestFactory.guest_factory(self.tdlobj, oz_config, None)
  File "/usr/lib/python2.6/site-packages/oz/GuestFactory.py", line 69, in guest_factory
    klass = oz.RHEL_6.get_class(tdl, config, auto, output_disk)
  File "/usr/lib/python2.6/site-packages/oz/RHEL_6.py", line 57, in get_class
    return RHEL6Guest(tdl, config, auto, output_disk)
  File "/usr/lib/python2.6/site-packages/oz/RHEL_6.py", line 35, in __init__
    "cpio")
  File "/usr/lib/python2.6/site-packages/oz/RedHat.py", line 42, in __init__
    None, None, diskbus, iso_allowed, url_allowed)
  File "/usr/lib/python2.6/site-packages/oz/Guest.py", line 1181, in __init__
    mousetype, diskbus, iso_allowed, url_allowed)
  File "/usr/lib/python2.6/site-packages/oz/Guest.py", line 179, in __init__
    self.connect_to_libvirt()
  File "/usr/lib/python2.6/site-packages/oz/Guest.py", line 122, in connect_to_libvirt
    self._discover_libvirt_type()
  File "/usr/lib/python2.6/site-packages/oz/Guest.py", line 74, in _discover_libvirt_type