ingress-nginx-helm/docs/examples/customization/custom-errors/custom-default-backend.helm.values.yaml

controller:
  config:
    custom-http-errors: "404,503"
defaultBackend:
  enabled: true
  image:
    registry: registry.k8s.io
    image: ingress-nginx/nginx-errors
    tag: "v20230505@sha256:3600dcd1bbd0d05959bb01af4b272714e94d22d24a64e91838e7183c80e53f7f"
  extraVolumes:
  - name: custom-error-pages
    configMap:
      name: custom-error-pages
      items:
      - key: "404"
        path: "404.html"
      - key: "503"
        path: "503.html"
  extraVolumeMounts:
  - name: custom-error-pages
    mountPath: /www