When I add filter "FROM LOCATION" and choose several locations is it "OR" or "AND" operator?
It is a logical OR, so if your monitor is down in any one of those locations the rule will alert you.
* ALL MONITORS ARE DOWN (from all locations)
Essentially if you create a rule that has no filtering (no query and no filters), that rule should fire for all monitors, regardless of location.
* ANY X MONITORS ARE DOWN (from X locations)
The rule wasn't designed to cover this particular use case. In general we want to know if any monitor from a subset of monitors isn't working correctly, or if any specific monitors are down. Monitoring whether a certain threshold of monitors have gone down before alerting wasn't something we considered when designing this rule.
Hi @jkambic thanks for the quick reply!
Seems I haven't been able to make my question clear. The case is that I want to check a web site from several locations cause if one location reports a problem it can be a problem with internet or problem with CDN for this region or something else and it's not a problem with the web site that is why it's important for me too check that problem has been confirmed from several locations or from all locations to exclude a "false alarm" or differentiate full and partial unavailability.
Anyway I understood that rules do not support this case.