Werk #22294: aws_ec2_limits: Stop reporting UNKNOWN for instance types unknown to Checkmk
| Component | Checks & agents | ||||||
| Title | aws_ec2_limits: Stop reporting UNKNOWN for instance types unknown to Checkmk | ||||||
| Date | Sep 11, 2026 | ||||||
| Level | Trivial Change | ||||||
| Class | Bug Fix | ||||||
| Compatibility | Compatible - no manual interaction needed | ||||||
| Checkmk versions & editions |
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The service "AWS/EC2 Limits" reported the state UNKNOWN with the summary "Unknown resource 'running_ondemand_instances_type'" for every running on-demand instance whose type was missing from the list of instance types shipped with Checkmk. This happened whenever AWS released a new instance family.
Checkmk knows no reliable limit for such a type, so the check no longer compares its instance count against one. It reports the count as a metric, shows the number of such types in the service summary, and names them in the service details, for example "Instance types unknown to Checkmk, no limits checked: r8a.4xlarge (3)". These types no longer affect the service state.