Detect ipv4/ipv6 socket in pod ip for nginx conf

Author: spadgett

charts/openshift-console-plugin/templates/configmap.yaml

@@ -15,8 +15,7 @@ data:
       default_type       application/octet-stream;
       keepalive_timeout  65;
       server {
-        listen              {{ .Values.plugin.port }} ssl;
-        listen              [::]:{{ .Values.plugin.port }} ssl;
+        listen              LISTEN_ADDRESS_PORT_REPLACED_AT_RUNTIME ssl;
         ssl_certificate     /var/cert/tls.crt;
         ssl_certificate_key /var/cert/tls.key;
         root                /usr/share/nginx/html;

charts/openshift-console-plugin/templates/deployment.yaml

@@ -19,6 +19,22 @@ spec:
       containers:
         - name: {{ template "openshift-console-plugin.name" . }}
           image: {{ required "Plugin image must be specified!" .Values.plugin.image }}
+          command:
+          - /bin/sh
+          - -c
+          - |
+            if echo "$POD_IP" | grep -qE '^([0-9]{1,3}\.){3}[0-9]{1,3}$'; then
+              LISTEN_ADDRESS_PORT_REPLACED_AT_RUNTIME="{{ .Values.plugin.port }}"
+            else
+              LISTEN_ADDRESS_PORT_REPLACED_AT_RUNTIME="[::]:{{ .Values.plugin.port }}"
+            fi
+            sed "s/LISTEN_ADDRESS_PORT_REPLACED_AT_RUNTIME/$LISTEN_ADDRESS_PORT_REPLACED_AT_RUNTIME/g" /etc/nginx/nginx.conf > /tmp/nginx.conf
+            exec nginx -c /tmp/nginx.conf -g 'daemon off;'
+          env:
+          - name: POD_IP
+            valueFrom:
+              fieldRef:
+                fieldPath: status.podIP
           ports:
             - containerPort: {{ .Values.plugin.port }}
               protocol: TCP