That's how is usually done in my company (and I suspect that's very 
prevalent but *wrong* in the end, if I understand that link correctly). In 
my company, at team level we have a lot of metrics scraped into a single 
prometheus. Then, at company level we just "replicate" everything with the 
corresponding team label.

The *official* recommendation would be to create aggregation rules in the 
"team" prometheus, and federate that from the "company" prometheus, right?

On Wednesday, 1 April 2020 21:42:20 UTC+2, Brian Brazil wrote:
>
> On Wed, 1 Apr 2020 at 20:11, Albert Serrallé <[email protected] 
> <javascript:>> wrote:
>
>> Hello,
>>
>> I'm trying to figure out how to federate my cloudwatch_exporter metrics. 
>>
>> The default metrics are 10m old, I understand that this is needed because 
>> cloudwatch consolidate metrics over time. My prometheus is scraping the 
>> exporter and saving the values with the original timestamp. Federation 
>> queries (as they are instant queries) cannot retrieve those metrics.
>>
>> So, I think that my only options are:
>>
>>    - set_timestamp -> false (fake illusion of real time metric, which 
>>    are really 10m old)
>>    - delay_seconds -> 1s-5m (metric might not be consolidated in 
>>    cloudwatch)
>>
>> There's anything else I can try? I don't like any of those two methods 
>> for the exposed reasons. I've been looking at the changes in stale logic 
>> for 2.0, but I don't know if this applies to me or how to do it: 
>>
>> If you're federating instance-level metrics, switch to only aggregated 
>>> metrics
>>>
>>
>> So, what's the recommended way to overcome this?
>>
>
> You can't with federation, it's merely a more obvious case where 
> instance-level metrics don't work. See 
> https://www.robustperception.io/federation-what-is-it-good-for
>
> In this case if you need the metrics in a different Prometheus, get that 
> Prometheus to scrape the cloudwatch exporter.
>
> Brian
>  
>
>>
>> Many thanks.
>>
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>> .
>>
>
>
> -- 
> Brian Brazil
> www.robustperception.io
>

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