On 25/01/2021 12:50, Allenzh li wrote:
I want to count the average value of each hour of a metric and I have
created a recording rule as follow:
```
- name: inspection-platform-CVMAndPhysical
interval: 1h
rules:
- record: vm:xxx_cpu_usage:avg1h
expr: avg_over_time(avg by (label1, lable2)
(xxxx_cpu_usage)[1h:])
```
When I make a range query request to the recording data with step >
5m, return empty.
I have google some case find that range query just eval 5m in every step.
So how should I use recording rule?
As with all metrics (scraped or created via recording rule) you need to
be setting the scrape/interval to less than 5 minutes otherwise a metric
will be marked as stale and not returned. In practice 2 minutes is the
maximum sensible scrape interval, and while you could make it a bit
longer for recording rules it still needs to be short enough to ensure
there is never more than 5 minutes between points.
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