Add ClusterIP as a service option

lib/cuber/cuberfile_parser.rb

@@ -19,6 +19,7 @@ def initialize
       @lb = {}
       @ingress = nil
       @ssl = nil
+      @cluster_ip = nil
     end
 
     def method_missing m, *args
@@ -76,7 +77,7 @@ def cron name, schedule, cmd
     def env key, value, secret: false
       secret ? (@secrets[key] = value) : (@env[key] = value)
     end
-    
+
     def health url
       @health = url
     end
@@ -89,6 +90,10 @@ def ingress enabled
       @ingress = enabled
     end
 
+    def cluster_ip enabled
+      @cluster_ip = enabled
+    end
+
     def ssl crt, key
       @ssl = { crt: crt, key: key }
     end

lib/cuber/cuberfile_validator.rb

@@ -23,6 +23,7 @@ def validate
       validate_health
       validate_lb
       validate_ingress
+      validate_cluster_ip
       validate_ssl
       @errors
     end
@@ -121,6 +122,11 @@ def validate_ingress
       @errors << 'ingress must be true or false' if @options[:ingress] != true && @options[:ingress] != false
     end
 
+    def validate_cluster_ip
+      return unless @options[:cluster_ip]
+      @errors << 'cluster_ip must be true or false' if @options[:cluster_ip] != true && @options[:cluster_ip] != false
+    end
+
     def validate_ssl
       return unless @options[:ssl]
       @errors << 'ssl crt must be a file' unless File.exist? @options[:ssl][:crt]

lib/cuber/templates/deployment.yml.erb

@@ -377,6 +377,26 @@ spec:
             name: web-service
             port:
               number: 80
+<%- elsif @options[:cluster_ip] -%>
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: cluster-ip
+  namespace: <%= @options[:app] %>
+  labels:
+    app.kubernetes.io/name: <%= @options[:app].to_s.to_json %>
+    app.kubernetes.io/instance: <%= @options[:instance].to_s.to_json %>
+    app.kubernetes.io/version: <%= @options[:release].to_s.to_json %>
+    app.kubernetes.io/managed-by: cuber
+spec:
+  type: ClusterIP
+  selector:
+    app: web-proc
+  ports:
+    - protocol: TCP
+      port: 8080
+      targetPort: 8080
 <%- else -%>
 ---
 apiVersion: v1