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StorageGRID node alert Unable to communicate with node due to SSM service after 12.0 upgrade

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storagegrid-webscale
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sgrid
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Applies to

NetApp StorageGRID

Issue

  • Alert Unable to communicate with node triggered against the service SSM, and will not clear automatically. 
  • 502 errors will be reported in the nginx/access.log while the service is unavailable                                                                                                                                                                                        

Example log:                                                                                                                                                                                                                                                                                                                                                10.X.X.X - - [17/Feb/2026:18:30:18 +0000] "GET /metrics/ssm HTTP/2.0" 502 11 "-" "Prometheus/2.53.3"

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