Hi Brian, Thanks for your reply. Could you share a sample config / query to fix this issue if possible ? I am a beginner and did not understand your reply fully.
Thanks and regards Sreehari On Tue, Mar 8, 2022 at 12:00 AM Brian Candler <[email protected]> wrote: > My guess is: when the plugin queries over a large time range, it is > sending a large step time to the prometheus API > <https://prometheus.io/docs/prometheus/latest/querying/api/#range-queries>, > which is skipping over the times of interest. > > Now, you can argue that this is a problem with the way that the panel > queries Prometheus. However, querying a 1 month range with a 30 second step > would be extremely inefficient (returning ~86,000 data points). So really, > it would be better if you were to have a *counter* of how many times a 502 > status code is returned, and then the plugin can calculate a rate over each > step. > > You can use a recording rule, running at the same interval as your > blackbox scrapes, to increment a counter for each 502 response from > blackbox_exporter. > > (Incidentally, the query that you've posted is syntactically invalid - it > has mismatched quotes) > > On Monday, 7 March 2022 at 14:20:13 UTC [email protected] wrote: > >> Hi Team, >> >> We use a discrete plugin(panel) in Grafana to display the data from >> blackbox_exporter to track the end-point(URL) availability and prometheus >> data retention period is 50 days. This panel shows URL available and >> unavailable time in percentage. >> >> Issue is smaller down time (E.g: 502 return code for 1hr ) is getting >> ignored when we select a larger time range in Grafana (above 1 month) and >> the panel is showing 100% URL available. But if we select a smaller time >> frame in Grafana, the URL unavailable time is displayed. >> >> Suspecting issue with below query mentioned in panel. Can somebody >> please provide a solution for this issue ? >> >> >> *Prom query Used in Grafana discrete plugin * >> probe_httpd_status_code{instance="https://xxxxxxx >> ",job=blackbox-generic-endpoints"} >> >> >> Prometheus Version - 2.31.0 >> Blackbox exporter - 0.13.0 >> Grafana Version - 6.7.4 >> Scrape_interval: 30s >> >> Thanks and regards >> SreeHari >> > -- > You received this message because you are subscribed to the Google Groups > "Prometheus Users" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/prometheus-users/5a281000-2be7-4f9b-8e9d-2062be33d99fn%40googlegroups.com > <https://groups.google.com/d/msgid/prometheus-users/5a281000-2be7-4f9b-8e9d-2062be33d99fn%40googlegroups.com?utm_medium=email&utm_source=footer> > . > -- You received this message because you are subscribed to the Google Groups "Prometheus Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/prometheus-users/CANY0OSRzCWjsBx%2Bnt6fg8OTdFnh66ZfmnkBddr%2Bd%2ByM-xoXLdg%40mail.gmail.com.
