Provide option for kubernetes to watch only a specific namespace (#433)

kustomize/base/kustomization.yml

@@ -0,0 +1,6 @@
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+resources:
+  - service-account.yml
+  - mc-router-deployment.yml
+  - server-examples.yaml

kustomize/base/mc-router-deployment.yml

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+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  labels:
+    app: mc-router
+  name: mc-router
+spec:
+  selector:
+    matchLabels:
+      app: mc-router
+  strategy:
+    type: Recreate
+  template:
+    metadata:
+      labels:
+        app: mc-router
+    spec:
+      serviceAccountName: mc-router
+      containers:
+      - image: itzg/mc-router
+        name: mc-router
+        # Add "--auto-scale-up" here for https://github.com/itzg/mc-router/#auto-scale-up
+        args:
+          - --api-binding
+          - :8080
+          - --in-kube-cluster
+        env:
+          - name: KUBE_NAMESPACE
+            valueFrom:
+              fieldRef:
+                fieldPath: metadata.namespace
+        ports:
+        - name: proxy
+          containerPort: 25565
+        - name: web
+          containerPort: 8080
+        resources:
+          requests:
+            memory: 50Mi
+            cpu: "100m"
+          limits:
+            memory: 100Mi
+            cpu: "250m"
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: mc-router
+spec:
+  selector:
+    app: mc-router
+  ports:
+    - protocol: TCP
+      port: 25565
+      targetPort: proxy
+  type: NodePort

kustomize/base/server-examples.yaml

@@ -0,0 +1,84 @@
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: mc-latest
+  annotations:
+    "mc-router.itzg.me/defaultServer": "true"
+spec:
+  type: NodePort
+  ports:
+  - port: 25565
+    name: minecraft
+  selector:
+    app: mc-latest
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  labels:
+    app: mc-latest
+  name: mc-latest
+spec:
+  selector:
+    matchLabels:
+      app: mc-latest
+  template:
+    metadata:
+      labels:
+        app: mc-latest
+    spec:
+      securityContext:
+        runAsUser: 1000
+        fsGroup: 1000
+      containers:
+      - image: itzg/minecraft-server
+        name: mc-latest
+        env:
+        - name: EULA
+          value: "TRUE"
+        ports:
+        - containerPort: 25565
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: mc-snapshot
+  annotations:
+    "mc-router.itzg.me/externalServerName": "snapshot.your.domain"
+spec:
+  type: NodePort
+  ports:
+  - port: 25565
+    name: minecraft
+  selector:
+    app: mc-snapshot
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  labels:
+    app: mc-snapshot
+  name: mc-snapshot
+spec:
+  selector:
+    matchLabels:
+      app: mc-snapshot
+  template:
+    metadata:
+      labels:
+        app: mc-snapshot
+    spec:
+      securityContext:
+        runAsUser: 1000
+        fsGroup: 1000
+      containers:
+      - image: itzg/minecraft-server
+        name: mc-snapshot
+        env:
+        - name: EULA
+          value: "TRUE"
+        - name: VERSION
+          value: "SNAPSHOT"
+        ports:
+        - containerPort: 25565

kustomize/base/service-account.yml

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+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: mc-router