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The Cloudaware patch process also supports patch groups, meaning that only members of one patch group will be rebooted at a time if necessary.
Rollback Mechanism
Rollback script is located on every patched instance in the following location: /opt/breeze-agent/os_updater/YYYYMMDDhhmmss.sh
If rollback is requested, Cloudaware Cloudaware’s Breeze agent will set repo to the previous GUID, execute the rollback script and verify rollback using yum update against preview repo GUID. After the script execution is complete, the yum update should not introduce any changes to the packages on the host.
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