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How to change root passwd/gain access to an official .qcow2 image from Red Hat et al.
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| source info: https://access.redhat.com/solutions/641193#comment-1104651 | |
| virt-customize -a rhel-guest-image-7.2-20160302.0.x86_64.qcow2 --root-password password:PASSW0RD --uninstall cloud-init |
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You can also run a script to do things that virt-customize does not perform internally. For example, replace the "--root-password" and "--uninstall" parameters with "-- run MyScriptName.sh" and put commands in the scripts. RTFM for specifics.