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Questions to Determine

  • What labels does the Service selector specify?
  • What labels do the running pods actually have?
  • Do the selector labels on the Service match the labels on the pods exactly?
  • Is the Service targetPort matching the port the container is listening on?
  • Are the pods passing their readiness probes?
  • Is the Service in the same namespace as the pods?
  • Was the Service selector changed when the manifest was rewritten?
  • Are there any typos in the label key or value?