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1. With this setup we kick off the driver script with the following cmd line arguments

   $ python configure.py -v $hypervisor -d $distro -p $profile -l $LOG_LVL

   The $distro argument chooses the hostOS of the mgmt server - this can be ubuntu / rhel. LOG_LVL can be set to INFO/DEBUG/WARN for troubleshooting and more verbose log output.

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1. The configure script does various operations to prepare the environment:

• clears up any dirty cobbler systems from previous runs
• cleans up Puppet certificates of these systems. Puppet recipes will fail if puppetmaster finds an invalid certificate
• starts up a new xenserver VM that will act as the mgmt server. we chose to keep things simple by launching the vm on a xenserver. one could employ jclouds via jenkins to deploy the mgmt server VM on a dogfooded cloudstack.
• in parallel the deployment config of marvin is parsed through to find the hypervisors that need to be cleaned up, pxe booted and prepared for the CloudStack deployment.
• all the hosts in the marvin config are pxe booted via ipmi and cobbler takes over to reimage them with the profile chosen by the jenkins job run.
• while this is happening we also seed the secondary storage with the systemvm template reqd for the hypervisor.
• all the primary stores in the marvin config are then cleaned for the next run.

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