Management server down would not result in host being rebooted. Primary storage down will.
As you mentioned, you have hosted your primary storage (NFS) on the management server node. So yes, taking it down will cause all host connected to it to reboot. It doesn’t matter how many VMs use that particular storage. I am sure if there is a better way of doing this but you could modify "kvmheartbeat.sh" to disable reboot on loosing primary storage connection. Regards, Somesh -----Original Message----- From: Frank Louwers [mailto:fr...@openminds.be] Sent: Wednesday, August 19, 2015 12:19 PM To: users@cloudstack.apache.org Subject: CS Manager down: all hypervisors reboot Hi all, We had an interesting outage this morning. We took the Cloudstack Manager node down for hardware upgrades and kernel updates, and it seems all “non-dedicated” hosts rebooted. We run KVM on CS 4.4.latest. Is this “normal behaviour”, why does it do that, and how do I disable that? The Manager is also a primary storage provider (NFS export), but all VMs use local storage (except 1). Regards, Frank
