[pve-devel] HA: vm shutdown/stop behaviour and other HA questions

[Thomas Lamprecht]

On 3/6/19 8:06 AM, Michael Rasmussen wrote:
> On Wed, 6 Mar 2019 07:59:14 +0100 (CET)
> Alexandre DERUMIER <aderumier at odiso.com> wrote:
> 
>>
>> In the futur, I would like to add some kind of balancing/scheduling
>> of vm (memory/cpu balancing), I think it's the right place to do it ? 
>>
>> I have looked in /usr/share/perl5/PVE/HA/Manager.pm, sub
>> select_service_node, seem pretty basic for now. (try node by
>> priority, and by nodeid, try_next if it's failing). I think they are
>> lot of improvment possible here.
> 
> One serious HA feature really missing is a way to configure that two or
> more VMs most never run on the same node. Eg. there is really no HA for
> a cluster if every VM member dies with the same node,

As Alexandre noted, there's:
https://bugzilla.proxmox.com/show_bug.cgi?id=2115

I just updated it with a rough proposal of how it could work, as you also
want this and real-world usages are the most importants one it would be
great if you can take a look at this and comment if it seems OK like
proposed or if something does not seems like it could be better.