How to set a root password for RHEL instances on OpenStack

Solution Unverified - Updated -

Issue

  • According to the OpenStack Getting Started Guide, the KVM image was downloaded from Red Hat Common Channel and used to launch multiple instances on our OpenStack environment. How do I set a root password for this image so that I can log in to the instance via vnc console and fix network related issues?
  • Is there a way to modify this image before it's launched so that different root passwords can be given to different instances?

Environment

  • Red Hat Enterprise Linux OpenStack Platform (RHEL-OSP) 3.0

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