Implement common alert policies

This section provides examples of fine-grain alert queries that you can use to filter Cloud Logging data. To learn more about query fields specific to Unified Maintenance, see the log schema.

Alert on any new scheduled maintenance

To alert on any new scheduled maintenance, define the logName for maintenance events in your project, and a SCHEDULED state. For example:

log_id("maintenance.googleapis.com/maintenance_events") AND
 jsonPayload.state = "SCHEDULED"

Alert when maintenance is scheduled for a specific resource type

To alert on any new scheduled maintenance for a specific resource type, define the logName for maintenance events in your project, a SCHEDULED state, and define the resource.type. For example, a Cloud SQL instance:

log_id("maintenance.googleapis.com/maintenance_events") AND
 jsonPayload.state = "SCHEDULED" AND
 jsonPayload.resource.type = "sqladmin.googleapis.com/Instance"

Alert when any maintenance starts in a specific location

To alert on any new maintenance starting in a specific location, define the logName for maintenance events in your project, a STARTED state, and define the location. For example, us-central1:

log_id("maintenance.googleapis.com/maintenance_events") AND
 jsonPayload.state = "STARTED" AND
 jsonPayload.resource.labels.location = "us-central1"

Alert when maintenance is complete on a specific resource

To alert on any completed maintenance on a specific resource, define the logName for maintenance events in your project, a COMPLETED state, and define the resourceName. For example, prod-db:

log_id("maintenance.googleapis.com/maintenance_events") AND
 jsonPayload.state = "COMPLETED" AND
 jsonPayload.resource.resourceName = "//sqladmin.googleapis.com/projects/proj-1/instances/prod-db"

Alert when there is a change to the scheduled start time of the maintenance

To alert when there is change to the scheduled start time, define the logName for maintenance events in your project, and check for recent updates to the timeline.schedule.startTime field. For example:

log_id("maintenance.googleapis.com/maintenance_events") AND
 labels."maintenance.googleapis.com/updated_fields" =~ "maintenanceScheduledStartTime"

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