deploy-templates/templates/kong-routes.yaml

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  annotations:
    konghq.com/preserve-host: 'false'
    konghq.com/protocols: 'http,https'
    konghq.com/strip-path: 'true'
    konghq.com/methods: 'POST'
  labels:
  {{- include "external-system-api.metaLabels" . | nindent 4 }}
  name: {{ .Values.externalSystem.service.name }}
spec:
  ingressClassName: kong
  rules:
    - host: {{ template "external-system-api.hostname" . }}
      http:
        paths:
          - path: {{ print .Values.kong.route.rootPath .Values.kong.route.proxyPath }}
            pathType: ImplementationSpecific
            backend:
              service:
                name: {{ .Values.externalSystem.service.name }}
                port:
                  number: {{ .Values.service.port }}