feat(socal-tunneller): set localPort to bind

charts/socat-tunneller/Chart.yaml

@@ -2,7 +2,7 @@ apiVersion: v1
 appVersion: "1.0"
 description: A Helm chart for socat-tunneller
 name: socat-tunneller
-version: 0.1.5
+version: 0.2.0
 home: http://www.dest-unreach.org/socat/
 maintainers:
   - name: plumdog

charts/socat-tunneller/templates/NOTES.txt

@@ -1 +1 @@
-Connect to the target by using kubectl port-forward to forward one of your local ports to a tunneller pod's port {{ .Values.tunnel.port }}, or to the service using svc/{{ include "tunneller.fullname" . }}.
+Connect to the target by using kubectl port-forward to forward one of your local ports to a tunneller pod's port {{ include "tunneller.localPort" . }}, or to the service using svc/{{ include "tunneller.fullname" . }}.

charts/socat-tunneller/templates/_helpers.tpl

@@ -30,3 +30,14 @@ Create chart name and version as used by the chart label.
 {{- define "tunneller.chart" -}}
 {{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" -}}
 {{- end -}}
+
+{{/*
+Define local port to bind.
+*/}}
+{{- define "tunneller.localPort" -}}
+{{- if .Values.tunnel.localPort -}}
+{{- .Values.tunnel.localPort -}}
+{{- else -}}
+{{- .Values.tunnel.port -}}
+{{- end -}}
+{{- end -}}

charts/socat-tunneller/templates/deployment.yaml

@@ -30,16 +30,18 @@ spec:
           command:
             - socat
           args:
-            - "TCP-LISTEN:$(TUNNEL_PORT),fork"
+            - "TCP-LISTEN:$(TUNNEL_LOCAL_PORT),fork"
             - "TCP:$(TUNNEL_HOST):$(TUNNEL_PORT)"
           env:
+            - name: TUNNEL_LOCAL_PORT
+              value: {{ include "tunneller.localPort" . | quote }}
             - name: TUNNEL_HOST
               value: {{ required "Must specify a target host for the tunnel." .Values.tunnel.host | quote }}
             - name: TUNNEL_PORT
               value: {{ required "Must specify a target port for the tunnel." .Values.tunnel.port | quote }}
           ports:
             - name: tunnel-port
-              containerPort: {{ (int64 .Values.tunnel.port) }}
+              containerPort: {{ include "tunneller.localPort" . }}
               protocol: TCP
           resources:
 {{ toYaml .Values.resources | indent 12 }}

charts/socat-tunneller/templates/service.yaml

@@ -10,7 +10,7 @@ metadata:
 spec:
   type: {{ .Values.service.type }}
   ports:
-    - port: {{ .Values.tunnel.port }}
+    - port: {{ include "tunneller.localPort" . }}
       targetPort: tunnel-port
       protocol: TCP
       name: tunnel-port

charts/socat-tunneller/values.yaml

@@ -2,7 +2,7 @@ replicaCount: 1
 
 image:
   repository: alpine/socat
-  tag: 1.0.5
+  tag: 1.7.4.4
   pullPolicy: IfNotPresent
 
 nameOverride: ""
@@ -24,3 +24,4 @@ podAnnotations: {}
 tunnel:
   host: myhost
   port: 9999
+  localPort: null