Issues with gateway rule or settings changes

Problem: Invalid NRQL rule

The rule deployed contains invalid NRQL syntax.

Solution

• Look for failed rule registration events and check the logs of the gateway pod.
• Validate the NRQL in the query builder using SELECT instead of DELETE, then edit the rule and re-deploy.
• Refer to NRQL documentation for guidance.

Problem: Wrong config map deployment

A ConfigMap containing application configurations was updated with an error.

Solution

• Check if new deployment pods fail to restart.
• Roll back to the previous working configuration.

Problem: K8s deployment job unable to complete

New pods with the latest config changes are unable to be scheduled due to resource exhaustion.

Solution

• Look at the gateway summary page for unhealthy clusters. Use the Kubernetes UI to view pod events and pending jobs.
• Increase node pool sizes or check the resource limit (CPU and memory) requests for pods.
• Verify cloud provider limits for the active number of nodes.

Problem: Data schema mismatch

The rule is written against data in NRDB with a different schema than in the gateway.

Solution

• Follow documentation instructions specific to each MELT type to ensure schema compatibility.