split internal & external

internal/internal-controller.yaml

@@ -0,0 +1,37 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: nginx-internal
+  labels:
+    app.kubernetes.io/name: nginx-internal
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app.kubernetes.io/name: nginx-internal
+  template:
+    metadata:
+      labels:
+        app.kubernetes.io/name: nginx-internal
+    spec:
+      containers:
+      - name: nginx-ingress
+        image: registry.k8s.io/ingress-nginx/controller:v1.7.0
+        args:
+          - /nginx-ingress-controller
+          - --ingress-class=nginx-internal
+          - --configmap=$(POD_NAMESPACE)/nginx-configuration
+        env:
+          - name: POD_NAME
+            valueFrom:
+              fieldRef:
+                fieldPath: metadata.name
+          - name: POD_NAMESPACE
+            valueFrom:
+              fieldRef:
+                fieldPath: metadata.namespace
+        ports:
+          - name: http
+            containerPort: 80
+          - name: https
+            containerPort: 443

internal/internal-policy.yaml

@@ -0,0 +1,21 @@
+---
+apiVersion: networking.k8s.io/v1
+kind: NetworkPolicy
+metadata:
+  name: restrict-ingress-nginx-internal
+spec:
+  podSelector:
+    matchLabels:
+      app.kubernetes.io/name: nginx-internal
+  policyTypes:
+    - Ingress
+  ingress:
+    - {}
+    # - from:
+    #     - ipBlock:
+    #         cidr: 192.168.0.0/16
+    #   ports:
+    #     - protocol: TCP
+    #       port: 80
+    #     - protocol: TCP
+    #       port: 443

internal/kustomization.yaml

@@ -0,0 +1,8 @@
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+
+resources:
+  - proxy
+  - internal-controller.yaml
+  - internal-policy.yaml
+  - service.yaml

internal/proxy/kustomization.yaml

@@ -0,0 +1,11 @@
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+
+resources:
+  - proxy.yaml
+  - service.yaml
+
+configMapGenerator:
+  - name: internal-proxy-config
+    files:
+      - nginx.conf

internal/proxy/nginx.conf

@@ -0,0 +1,38 @@
+user  nginx;
+worker_processes  auto;
+error_log  /var/log/nginx/error.log warn;
+pid        /var/run/nginx.pid;
+
+events {
+  worker_connections  1024;
+}
+
+http {
+  # Basic config
+  include       /etc/nginx/mime.types;
+  default_type  application/octet-stream;
+  sendfile        on;
+  keepalive_timeout  65;
+
+  # We define internal upstreams
+  upstream internal_ingress {
+    server nginx-internal.ingress-nginx.svc.cluster.local:80;
+  }
+
+  server {
+    listen 80 default_server;
+    server_name _;
+  }
+
+  # dev.mrcynic.site - allow only LAN
+  server {
+    listen 80;
+    server_name ~^(?<subdomain>.+)\.dev\.mrcynic\.site$;
+
+    location / {
+      proxy_pass http://internal_ingress;
+      proxy_set_header Host $host;
+      proxy_set_header X-Real-IP $remote_addr;
+    }
+  }
+}

internal/proxy/proxy.yaml

@@ -0,0 +1,29 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: internal-proxy
+  annotations:
+    argocd.argoproj.io/sync-wave: "100"
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: internal-proxy
+  template:
+    metadata:
+      labels:
+        app: internal-proxy
+    spec:
+      containers:
+        - name: nginx
+          image: nginx:stable-alpine
+          volumeMounts:
+            - name: config
+              mountPath: /etc/nginx/nginx.conf
+              subPath: nginx.conf
+          ports:
+            - containerPort: 80
+      volumes:
+        - name: config
+          configMap:
+            name: internal-proxy-config

internal/proxy/service.yaml

@@ -0,0 +1,14 @@
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: internal-proxy-service
+spec:
+  type: LoadBalancer
+  selector:
+    app: internal-proxy
+  ports:
+    - name: http
+      port: 80
+      targetPort: 80
+      nodePort: 30080

internal/service.yaml

@@ -0,0 +1,16 @@
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: nginx-external
+spec:
+  type: LoadBalancer
+  selector:
+    app.kubernetes.io/name: nginx-external
+  ports:
+    - name: http
+      port: 80
+      targetPort: 80
+    - name: https
+      port: 443
+      targetPort: 443