service.dnsService also exposes DNS port of the kubernetes Service (#…

…120)
localstack · May 17, 2024 · d47961e · d47961e
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diff --git a/charts/localstack/README.md b/charts/localstack/README.md
@@ -144,14 +144,16 @@ The following table lists the configurable parameters of the Localstack chart an
 |------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---------------------------------------------------------|
 | `service.type`                                       | Kubernetes Service type                                                                                                                                                                                                               | `NodePort`                                              |
 | `service.edgeService.targetPort`                     | Port number for Localstack edge service                                                                                                                                                                                               | `4566`                                                  |
-| `service.externalServicePorts.start`                   | Start of the external service port range (included). service                                                                                                                                                                        | `4510`                                                  |
+| `service.externalServicePorts.start`                 | Start of the external service port range (included). service                                                                                                                                                                          | `4510`                                                  |
 | `service.externalServicePorts.end`                   | End of the external service port range (excluded). service                                                                                                                                                                            | `4560`                                                  |
 | `service.loadBalancerIP`                             | loadBalancerIP if Localstack service type is `LoadBalancer`                                                                                                                                                                           | `nil`                                                   |
+| `service.dnsService`                                 | Expose the Service and Deployment's DNS port for TCP and UDP DNS traffic                                                                                                                                                              | `""`                                                    |
+| `service.clusterIP`                                  | Set a static clusterIP for the service. Useful for DNS delegation to the Localstack Service                                                                                                                                           | `""`                                                    |
 | `ingress.enabled`                                    | Enable the use of the ingress controller to access Localstack service                                                                                                                                                                 | `false`                                                 |
 | `ingress.annotations`                                | Annotations for the Localstack Ingress                                                                                                                                                                                                | `{}`                                                    |
 | `ingress.hosts[0].host`                              | Hostname to your Localstack Ingress                                                                                                                                                                                                   | `nil`                                                   |
 | `ingress.hosts[0].paths`                             | Path within the url structure                                                                                                                                                                                                         | `[]`                                                    |
-| `ingress.tls`                                        | Exsisting TLS certificates for ingress                                                                                                                                                                                                | `[]`                                                    |
+| `ingress.tls`                                        | Existing TLS certificates for ingress                                                                                                                                                                                                 | `[]`                                                    |
 
 ### Persistence Parameters
 

diff --git a/charts/localstack/templates/service.yaml b/charts/localstack/templates/service.yaml
@@ -37,6 +37,16 @@ spec:
       {{- if and (or (eq $.Values.service.type "NodePort") (eq $.Values.service.type "LoadBalancer")) (not (empty .Values.service.edgeService.nodePort)) }}
       nodePort: {{ .Values.service.edgeService.nodePort }}
       {{- end }}
+    {{- if .Values.service.dnsService }}
+    - name: dns-tcp
+      port: 53
+      containerPort: 53
+      protocol: TCP
+    - name: dns-udp
+      port: 53
+      containerPort: 53
+      protocol: UDP
+    {{- end }}
     {{- range untilStep (.Values.service.externalServicePorts.start|int) (.Values.service.externalServicePorts.end|int) 1 }}
     - name: "external-service-port-{{ . }}"
       port: {{ . }}

diff --git a/charts/localstack/values.yaml b/charts/localstack/values.yaml
@@ -126,6 +126,10 @@ service:
   ## @param service.dnsService Enables or disables the exposure of the LocalStack DNS
   ##
   dnsService: false
+  ## @param service.clusterIP sets a static clusterIP. This is useful alongside the LocalStack DNS setup
+  ##   see https://kubernetes.io/docs/tasks/administer-cluster/dns-custom-nameservers/#configuration-of-stub-domain-and-upstream-nameserver-using-coredns for an example of DNS delegation in Coredns
+  ##
+  clusterIP: ""
 
 ingress:
   enabled: false