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Alerts

Alerts turn “someone should check that” into “you will be told”. The page has two halves: the rules you have written, and what is firing because of them.

Alert rules

Section titled “Alert rules”

The Alerts page split into Active Alerts and Alert Rules

Create Rule opens the form. A rule is a SQL condition, an operator and a threshold, checked on a schedule you set:

Field Meaning
Rule Name What an operator reads when it fires
Condition SQL The query that produces the number to test
Operator / Threshold How the result is compared, and against what
Severity Info, Warning or Critical
Evaluation Interval How often to check, in seconds. Defaults to 300

Rules are evaluated continuously in the background — nobody needs a browser open. They can be disabled without deleting them, which is what you want during planned maintenance.

Each rule carries a severity:

Severity Use for
Critical Stop-the-line conditions — wake someone up
Warning Degradation worth attention this shift
Info Worth recording, not worth interrupting anyone

Rules can be enabled and disabled without deleting them, which is what you want during planned maintenance.

Active alerts

Section titled “Active alerts”

The other half of the page lists what is currently firing. An empty list here is the good outcome.

Acknowledging an alert marks it as seen. For anything that needs actual work, escalate to an incident — alerts tell you something is wrong, incidents track what you did about it.

Writing good rules

Section titled “Writing good rules”

Two failure modes, and both end the same way:

  • Too sensitive and the alert becomes noise people mute
  • Too loose and it fires after the damage is done

Use Explore to look at the metric’s actual distribution before choosing a threshold. Picking a round number without looking is how alerts end up ignored.

Letting an agent write them

Section titled “Letting an agent write them”

Agents can create and refine alert rules. If you can describe the condition you care about, an agent can turn it into a rule — and, given the history, suggest a threshold that would not have cried wolf.

Section titled “Related”