[Labs-l] [Ops] Slowing down puppet runs?

[Jeff Green]

To be clear frack uses essentially the same apt module as production, and 
this seems to be the behavior of the production puppet as well. Point 
being we should be able to significantly reduce the pain of production 
puppet runs with a fairly minor change.

On Fri, 31 Oct 2014, Jeff Green wrote:

> On a related note, I've been looking at puppet agent run time in frack and 
> I noticed that puppet executes apt-get update literally every run, and 
> this accounts for a large chunk of the agent run time.
>
> Seems like it would be reasonable to reduce the apt update frequency to 
> once or twice per day, and maybe even to handle it by splayed cron job 
> instead of as a puppet exec.
>
> jg
>
> On Fri, 31 Oct 2014, Giuseppe Lavagetto wrote:
>
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>> Puppet is very resource intensive and runs every 20 minutes are a
>> waste of resources even in prod, probably; it is surely taking a
>> not-so-small toll on labs in term of cpu/iowait spikes.
>>
>> +1 to Antoine's proposal.
>>
>> Ciao
>>
>> Giuseppe
>>
>> On 31/10/14 15:17, Andrew Bogott wrote:
>>> On 10/31/14 4:48 AM, Antoine Musso wrote:
>>>> Hello,
>>>> 
>>>> I noticed labs instance run puppet every 20 minutes just like
>>>> Wikimedia production.  I thought on labs it could be run just
>>>> once per hour which would slightly reduce load.
>>> That wouldn't necessarily be bad, but can you explain what problem 
>>> you're hoping to fix?  As far as I know, virt1000 (the labs 
>>> puppetmaster) doesn't have any complaints about load.
>>> 
>>> -A
>>> 
>>> 
>>> _______________________________________________ Labs-l mailing
>>> list Labs-l at lists.wikimedia.org 
>>> https://lists.wikimedia.org/mailman/listinfo/labs-l
>>
>> - -- 
>> Giuseppe Lavagetto
>> Wikimedia Foundation - TechOps Team
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