Live‑Migrate OpenStack Instances for Zero‑Downtime Maintenance
Learn how to move running VMs between compute nodes using OpenStack live migration, what prerequisites are needed, and how to verify success.
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openstackUsing OpenStack Shelve/Unshelve to Temporarily Free Compute Resources
Learn how to shelve an instance to shared storage, free its compute host, and later unshelve it safely, with verification steps and known limitations.
Can OpenStack Nova live migration move a small application with zero user-visible downtime?
Goal Move a small, running application between OpenStack compute hosts using Nova live migration while avoiding any user-visible downtime. Constraints and uncertainty Nova live migration pre-copies memory and state, then pauses the instance briefly during cutover to transfer remaining dirty pages. The application must tolerate that pause or recover TCP conne