TL;DR Avoid unexpected non-suspect node reboot during maintenance in any High Availability cluster. No need to wait for any grace periods until it becomes inactive by itself, no uncertainties.
ORIGINAL POST How to disable HA for maintenance
Josh McKenna ag14spirit
free-pmx
/ ha-maintenance.free-pmx.rst
Last active
August 18, 2025 09:32
free-pmx
/ corosync-fallacy.free-pmx.rst
Last active
August 18, 2025 09:31
TL;DR Distinguish the role of Corosync in Proxmox clusters from the rest of the stack and appreciate the actual reasons behind unexpected reboots or failed quorums.
ORIGINAL POST The Proxmox Corosync fallacy
free-pmx
/ watchdog-mux.free-pmx.rst
Last active
August 18, 2025 09:33
TL;DR The unexpected reboot you have encountered might have had nothing to do with any hardware problem. Details on specific Proxmox watchdog setup missing from official documentation.
ORIGINAL POST The Proxmox time bomb watchdog
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