Change scrape_duration_seconds to gauge #90
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So, the bucket gets configured by the user and not by us? Reading up on https://prometheus.io/docs/practices/histograms/ |
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This should be a gauge, which contains the information for that scrape. This was fixed a while back on the node exporter, I'm guessing this was copied from before then. |
… split out collector_success
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@brian-brazil Ah, that makes sense. Yes, the summary is probably from the initial commit, more or less. |
brian-brazil
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exporter.go
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| if err != nil { | ||
| log.Errorf("ERROR: %s collector failed after %fs: %s", name, duration.Seconds(), err) | ||
| result = "error" | ||
| scrapeSuccess.WithLabelValues(name).Set(0) |
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This should use ConstMetrics, so there's no interference from any scrapes happening at the same time
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LGTM! |
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Currently the
scrape_duration_secondsmetric is a summary. When trying to reason about #89, it is hard to look back in time to see if others have this problem as well, since we do not have the buckets. I see no real benefit in using a summary here, and think we should be using a histogram instead.Probably we should be setting the
Bucketsoption as well, rather than using the defaults. My lowest 0.5 quantile with the current summary is ~0.04s, so I would make an initial guess that something like[0.01, 0.015, 0.03, 0.1, 0.15, 0.3, 1.0, 3.0, Inf]would capture the interesting ranges with acceptable precision?