Rules

Notifications

As we mentioned earlier, assertions are not alerts. If you want to get notified, you can add notification rules. Asserts uses Prometheus Alert Manager for notification internally, so we support all the receivers listed on its official page (Email, Pagerduty, Slack, etc.)

Notifications are organized into different sections, just like the thresholds, and the same hierarchical granularity levels apply. You can set notifications for an assertion whenever it fires or when it fires on a specific job or a job and request type. Free-form label conditions are also supported here.

There is also a quick shortcut from the Workbench to bring you to the notification settings with all the labels pre-populated.

Suppressions

Similar to notifications, you can also choose a subset of assertions to suppress, so they don’t fire. Suppressed assertions are ignored in Asserts processing. They will not be available in Top Insights, Graph, or the Workbench. Note this is very different from an assertion that fires but does not notify.

Bring your own

If you have your own rules, you can also bring them into the Asserts system by defining custom assertion rules. You can add them individually on the UI or upload a rule file.