Istio/Envoy
Upstream Connect error
upstream connect error or disconnect/reset before headers. reset reason: connection termination
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This error is most likely caused by an application crash and not by a problem in the infrastructure.
Puma
Unable to add work while shutting down
This error occurs when Puma receives a request after the Puma server has received a SIGTERM signal.
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For more information, see Puma documentation for Kubernetes.
RDS/Postgres
Too Many Connections
You may see one of these errors:
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