Please don't just say "it doesn't work". Say what happened. Did you see an error message? Did the alert fire when you were not expecting it, or not fire when you were expecting it?
Adding "if: ..." to an alerting rule shouldn't work - I cannot see that syntax anywhere in the documentation <https://prometheus.io/docs/prometheus/latest/configuration/recording_rules/>. You need to put the logic into the expr: and you can debug your expr using the prometheus query GUI (*). Adding parentheses might help. I suspect that foo and on() bar or baz will be parsed as (foo and (on() bar)) or baz which is not what you require. Because you're using on() I think you're already aware that "and", "or" and "==" don't work the way that newcomers expect. To summarize: Comparison operators <https://prometheus.io/docs/prometheus/latest/querying/operators/#comparison-binary-operators> foo : is a set of timeseries. foo{bar="baz"} : is the same set of timeseries, filtered down to only those with label bar="baz". foo{bar="baz"} == 1 : is the same set of timeseries, filtered down to only those with label bar="baz" and whose value is 1. Logical operators <https://prometheus.io/docs/prometheus/latest/querying/operators/#logical-set-binary-operators> foo and bar : is the set of timeseries from foo, filtered to only those where bar exists with the exact same set of labels (but any value). Given that *day_of_week() == 6* is a scalar value (6) it has no labels. (*) You can test your expression in the PromQL browser like this: try selecting the graph view and scrolling out so you display 2 weeks. up == 1 # ok up == 1 and day_of_week() == 4 # no results up == 1 and on() day_of_week() == 4 # works up == 1 and on () day_of_week() == 4 or day_of_week() == 5 # unexpected: gives value 1 or value 5 up == 1 and on () (day_of_week() == 4 or day_of_week() == 5) # correct I think this confirms that your problem is lack of parentheses. On Thursday, 5 August 2021 at 05:22:47 UTC+1 [email protected] wrote: > Hello All, > > I want to set up an alert monitoring for a job/service which is running > only on weekends. > Alerts should trigger during weekend if the service is not running or goes > down. > > Tried with below query (just for testing, in actual query value would be > 0). PFA > > *d********_status{job="targets",name="d*-*******ise-*****re-coord"} == 1 > and on() day_of_week() == 6 or day_of_week() == 0* > > Also in alert rules applied if condition > - alert: "[EMR]: Java coordinator is down" > *if: day_of_week() == 0 OR day_of_week() == 6* > > But neither of them working*.* > > Thanks, > Kishore > -- 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/de952f8b-8641-4941-8844-03a7f682ca51n%40googlegroups.com.
