Hi David (et al),

We encountered the same issue about a year ago, and it was disastrous for us. 
It’s worrying that this has become the default behaviour, although the solution 
is straightforward:

reboot.host.and.alert.management.on.heartbeat.timeout=false

Thanks to Wei for pointing this out so quickly.

What I still find challenging is that when something goes wrong, the logs don’t 
provide much information to work with, and the SSVM still seems a bit too 
fragile for comfort. I stick with ACS because it does many things well, but 
daily operations can be more challenging than they need to be. I sincerely hope 
we see more focus on these practical challenges.

Regards,
Antoine

Antoine Boucher
[email protected]


On Sep 19, 2025, at 07:46, David Sekne <[email protected]> wrote:

Hello,

I had the same problem not long ago.  I added a new primary storage (NFS) 
volume which did not have the proper write permissions (already had multiple 
attached from the same storage and working fine) . When ACS failed to create 
the KVMHA folder on it it rebooted all my hosts which brought down the entire 
zone. Worst thing is the reboots are repeated until you fix the underlying 
cause (or put the storage in maintenance mode).

I've updated the config's already as suggested here and will update our 
procedures to manually do a mount and write permissions test before adding a 
new storage volume.

I do feel this script is a bit trigger happy and an alert would be just fine in 
these cases.

Regards,

On 9/17/25 13:58, rohityadavcloud (via GitHub) wrote:
> GitHub user rohityadavcloud added a comment to the discussion: KVM hosts got 
> rebooted while adding NFS primary storage
> 
> I hit the same issue few weeks ago and can confirm the agent.properties 
> certainly helped.
> 
> GitHub link: 
> https://github.com/apache/cloudstack/discussions/11657#discussioncomment-14427474
> 
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-- 
David Sekne
Systems Administrator
--
DHH Infrastructure team
Webtasy, d.o.o., Slovenia
Plus Hosting Grupa d.o.o., Croatia
mCloud d.o.o., Serbia

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