fix(runners): correct regex pattern for extracting AMI ID from SSM parameter ARN #4981
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Dependency Review✅ No vulnerabilities or license issues or OpenSSF Scorecard issues found.Scanned FilesNone |
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@stuartp44 thx, do you know if any example is covering this. Or what change in ane xample can test this case? |
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@npalm this issue has surfaced during the last major version release and is mentioned #4959. Without this PR, stating the "id_ssm_parameter_arn" Fails and wont work as the information that is passed into the scale-up lambdas env is missing the lead "/" and thus causes a IAM permission issue. 
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npalm
approved these changes
Jan 8, 2026
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This PR creates a small change to the regex group that ensures the correct ami_id_ssm_parameter_arn value is passed in its fullest to the env of the scale-up lambda. At the moment, this is missing the leading '/' and thus causes
Error processing batch (size: 3): Failed to lookup runner AMI ID from SSM parameter: github-action-runners/staging-multi/<redacted>-ubuntu-x64/runners/config/ami_id,\n GetParameterError: User: arn:aws:sts::<redacted>:assumed-role/staging-multi-<redacted>-ubu-x64-med-scale-up-lambda-<redacted>/staging-multi-<redacted>-ubu-x64-med-scale-up is not authorized to perform: ssm:GetParameter on resource: arn:aws:ssm:<redacted>:<redacted>:* because no identity-based policy allows the ssm:GetParameter action, ignoring batch",.closes #4959