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A concise architecture note for running Mattermost with a PostgreSQL‑backed message store in a clustered HA deployment, covering requirements, minimal design, trust boundaries, ops checks, and failure‑mode triggers.
Learn how Proxmox VE HA automatically restarts VMs after a host failure, reducing downtime to seconds with shared storage and fencing.
The goal is to confirm whether a Proxmox VE HA-managed VM can reliably transition to the running state after live migration when its disk resides on an NFS v4 export, given that the same configuration succeeds in a single‑node test but fails in a multi‑node production cluster. The uncertainty stems from the HA resource agent’s reliance on flock‑based locking
mattermost
proxmox