<p dir="ltr">That's exactly what I needed to know, thanks all.</p>
<p dir="ltr">I'll schedule a script for the nodes to reboot and patch once every week or two and then I can let it run without me needing to worry about it.</p>
<p dir="ltr">Thomas</p>
<br><div class="gmail_quote"><div dir="ltr">On Fri, Feb 9, 2018, 2:26 AM Martin Sivak <<a href="mailto:msivak@redhat.com">msivak@redhat.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi,<br>
<br>
the hosts are almost stateless and we set up most of what is needed<br>
during activation. Hosted engine has some configuration stored<br>
locally, but that is just the path to the storage domain.<br>
<br>
I think you should be fine unless you change the network topology<br>
significantly. I would also install security updates once in while.<br>
<br>
We can even shut down the hosts for you when you configure two cluster<br>
scheduling properties: EnableAutomaticPM and HostsInReserve.<br>
HostsInReserve should be at least 1 though. It behaves like this, as<br>
long as the reserve host is empty, we shut down all the other empty<br>
hosts. And we boot another host once a VM does not fit on other used<br>
hosts and is places on the running reserve host. That would save you<br>
the power of just one host, but it would still be highly available (if<br>
hosted engine and storage allows that too).<br>
<br>
Bear in mind that single host cluster is not highly available at all.<br>
<br>
Best regards<br>
<br>
Martin Sivak<br>
<br>
On Fri, Feb 9, 2018 at 8:25 AM, Gianluca Cecchi<br>
<<a href="mailto:gianluca.cecchi@gmail.com" target="_blank">gianluca.cecchi@gmail.com</a>> wrote:<br>
> On Fri, Feb 9, 2018 at 2:30 AM, Thomas Letherby <<a href="mailto:xrs444@xrs444.net" target="_blank">xrs444@xrs444.net</a>> wrote:<br>
>><br>
>> Thanks, that answers my follow up question! :)<br>
>><br>
>> My concern is that I could have a host off-line for a month say, is that<br>
>> going to cause any issues?<br>
>><br>
>> Thanks,<br>
>><br>
>> Thomas<br>
>><br>
><br>
> I think that if in the mean time you don't make any configuration changes<br>
> and you don't update anything, there is no reason to have problems.<br>
> In case of changes done, it could depend on what they are: are you thinking<br>
> about any particular scenario?<br>
><br>
><br>
> _______________________________________________<br>
> Users mailing list<br>
> <a href="mailto:Users@ovirt.org" target="_blank">Users@ovirt.org</a><br>
> <a href="http://lists.ovirt.org/mailman/listinfo/users" rel="noreferrer" target="_blank">http://lists.ovirt.org/mailman/listinfo/users</a><br>
><br>
</blockquote></div>