Jetstream2 is upgrading compute nodes and infrastructure in preparation for an OpenStack upgrade in December. 

You may see brief pauses in VMs as they are live migrated to other compute nodes. There should not be downtimes. 

GPU nodes are being updated as they empty since we cannot presently live migrate GPU instances. We will likely have a planned outage in coming weeks for GPU node maintenance and will notify users here and via https://jetstream.status.io/ as well.