For each resource, you can configure any number of rules that determine the status of its entities. The Condition field determines whether:
- all rules must pass (
AllOf); - at least one rule must pass (
AnyOf).
If at least one check returns an error, the entity status is set to error, regardless of the other check results and the condition.
Schedule
The check scheduler runs every minute. For each rule, you can specify a five-field cron expression in the Schedule field. The rule then runs only at the specified times. If the field is empty, the rule runs every time the scheduler starts (once a minute).
Example: 0 * * * * runs the check at the beginning of every hour.
If a rule is not scheduled to run at the current time, its latest check result is used to calculate the entity status.
Logs for the latest checks are available under Health checks in the resource menu.
Entity statuses
An entity can have one of four statuses:
healthy— rules are configured, and the entity parameters satisfy them;unhealthy— rules are configured, but the entity parameters do not satisfy them;unknown— no rules are configured, or the check cannot run;error— an error occurred while at least one rule was running.
Click an entity status badge to open a table with rule results and additional information. The table shows only rules that have run at least once.
The ENTITY_UPDATED event is generated only when the entity status changes.