[Labs-l] Instance scheduler modified, could cause instance creation to fail

Wed Feb 29 19:47:48 UTC 2012

Hm. Something else went wrong here. It was scheduled (nova-scheduler
log shows it casted to virt4), and networked (nova-network log shows
that working properly), but for some reason the instance's directory
wasn't created. It also has no libvirt log on virt4, which means it
was never properly launched. I can't find any specific error as to why
this may have happened.

We'll just need to delete and recreate the instance.

On Wed, Feb 29, 2012 at 10:15 AM, Damian Zaremba
<damian at damianzaremba.co.uk> wrote:
> On 23/02/2012 00:44, Ryan Lane wrote:
>>
>> I've switched from using the chance scheduler to the simple scheduler
>> for nova (https://gerrit.wikimedia.org/r/#change,2731). This means
>> that when instances are created, the compute node with the least
>> number of instances running will be chosen, rather than before where
>> any random compute node was chosen.
>>
>> The new scheduler has some options which limit which nodes are chosen,
>> though, and the defaults may be set a little low. If you create an
>> instance and it stays in the scheduling or pending mode forever (or it
>> eventually fails), let me know and I'll tweak the configuration
>> options.
>>
>> - Ryan
>>
>> _______________________________________________
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>> Labs-l at lists.wikimedia.org
>> https://lists.wikimedia.org/mailman/listinfo/labs-l
>
>
> It looks like wikistream-1 is stuck in pending (and nagios is spamming IRC,
> gah - possibly someone could fix the script so it only gets instances after
> the first puppet run).
>
> If you could magic some tweaking that would be awesome :)
>
> --
> Damian Zaremba
> http://about.me/damianzaremba
>
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