I am idiot, that makes sense, yes. Thank you.

On 10/5/23 11:15, Nux wrote:
Hello,

"By definition" you cannot have VM HA with local storage.

If your hypervisor goes down, through what process will the storage of your VM be moved to another hypervisor and started there?

For VM HA you always must have network/shared storage, be it CEPH, Storpool, Linbit etc - and always you need some NFS share for the heartbeat - if the heartbeat NFS share were to become unavailable all the hypervisors will fence themselves (forced reboot).


On 2023-10-05 10:03, Granwille Strauss wrote:
Hi Nux

So we cannot run VM Ha on strict KVM local storage? Or can we keep
this configuration of local storage and set up a temp NFS Primary
storage just for the hearbeat process to work?

On 10/4/23 15:36, Nux wrote:

I would avoid using host HA, I am not sure it can be relied upon
currently and one thing I know for sure is that it breaks VM HA.
I would just rely on the VM HA feature and disable host HA
altogether.
Do note, VM HA requires an NFS storage for the hearbeat etc and it
needs to be stable otherwise hosts will begin to fence themselves.

On 2023-10-04 13:29, W. Verleger - proIO GmbH wrote:

Hi Boris,

Thank you, will check


૘ෞ਀ഀ਀䴀椀琀 昀爀攀甀渀搀氀椀挀栀攀渀 䜀爀ﰀßen
/ With kind regards

Wilken Verleger

proIO GmbH
Kleyerstr. 79 - 89 / Tor 13
D-60326 Frankfurt am Main

- Support -
Mail: supp...@proio.com
24h:  +(49) (0) 1805 522 855

-----Ursprüngliche Nachricht-----
Von: Boris Stoyanov <boris.stoya...@shapeblue.com>
Gesendet: Donnerstag, 28. September 2023 19:55
An: users@cloudstack.apache.org
Betreff: Re: KVM Host HA Settings

Hi Wilken,

Have you checked these article:
https://www.shapeblue.com/host-ha-for-kvm-hosts-in-cloudstack/
You can also see the feature spec here:
https://cwiki.apache.org/confluence/display/CLOUDSTACK/Host+HA it
contains more detailed explanation of all the settings

Regards,
Boris.

From: W. Verleger - proIO GmbH <w.verle...@proio.com>
Date: Thursday, 28 September 2023, 17:28
To: users@cloudstack.apache.org <users@cloudstack.apache.org>
Subject: KVM Host HA Settings
Hi,

Bringing in new KVM hosts to CS 4.18.0.0.
How do you all configure Cloudstack to use "Host HA" for KVM
hypervisor (preferably CS 4.18.0.0)?

Thanks so much!

Mit freundlichen Grüßen / With kind regards

Wilken Verleger

proIO GmbH
Kleyerstr. 79 - 89 / Tor 13
D-60326 Frankfurt am Main

- Support -
Mail: supp...@proio.com
24h:  +(49) (0) 1805 522 855

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