Add a Python example of the NGINX Ingress Controller

Author: joeduffy

examples/simple-nginx-py/.gitignore

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+*.pyc
+venv/

examples/simple-nginx-py/Pulumi.yaml

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+name: simple-nginx-py
+runtime:
+  name: python
+  options:
+    virtualenv: venv
+description: A simple NGINX ingress controller example

examples/simple-nginx-py/__main__.py

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+# Example inspired by:
+# https://www.digitalocean.com/community/tutorials/how-to-set-up-an-nginx-ingress-on-digitalocean-kubernetes-using-helm
+# Note that, as described in that article, you will need to configure DNS for hw1/hw2.your_domain_name.
+
+import pulumi
+from pulumi_kubernetes.apps.v1 import Deployment
+from pulumi_kubernetes.core.v1 import Service
+from pulumi_kubernetes.networking.v1 import Ingress
+from pulumi_kubernetes_ingress_nginx import IngressController, ControllerArgs, ControllerPublishServiceArgs
+
+# Install the NGINX ingress controller to our cluster. The controller
+# consists of a Pod and a Service. Install it and configure the controller
+# to publish the load balancer IP address on each Ingress so that
+# applications can depend on the IP address of the load balancer if needed.
+ctrl = IngressController('myctrl',
+    controller=ControllerArgs(
+        publish_service=ControllerPublishServiceArgs(
+            enabled=True,
+        ),
+    ),
+)
+
+# Now let's deploy two applications which are identical except for the
+# names. We will later configure the ingress to direct traffic to them,
+# one domain name per application instance.
+apps = []
+app_base = 'hello-k8s'
+app_names = [ f'{app_base}-first', f'{app_base}-second' ]
+for app_name in app_names:
+    app_svc = Service(f'{app_name}-svc',
+        metadata={ 'name': app_name },
+        spec={
+            'type': 'ClusterIP',
+            'ports': [{ 'port': 80, 'targetPort': 8080 }],
+            'selector': { 'app': app_name },
+        },
+    )
+    app_dep = Deployment(f'{app_name}-dep',
+        metadata={ 'name': app_name },
+        spec={
+            'replicas': 3,
+            'selector': {
+                'matchLabels': { 'app': app_name },
+            },
+            'template': {
+                'metadata': {
+                    'labels': { 'app': app_name },
+                },
+                'spec': {
+                    'containers': [{
+                        'name': app_name,
+                        'image': 'paulbouwer/hello-kubernetes:1.8',
+                        'ports': [{ 'containerPort': 8080 }],
+                        'env': [{ 'name': 'MESSAGE', 'value': 'Hello K8s!' }],
+                    }],
+                },
+            },
+        },
+    )
+    apps.append(app_svc.status)
+
+# Next, expose the app using an Ingress.
+app_ingress = Ingress(f'{app_base}-ingress',
+    metadata={
+        'name': 'hello-k8s-ingress',
+        'annotations': {
+            'kubernetes.io/ingress.class': 'nginx',
+        },
+    },
+    spec={
+        'rules': [
+            {
+                # Replace this with your own domain!
+                'host': 'myservicea.foo.org',
+                'http': {
+                    'paths': [{
+                        'pathType': 'Prefix',
+                        'path': '/',
+                        'backend': {
+                            'service': {
+                                'name': app_names[0],
+                                'port': { 'number': 80 },
+                            },
+                        },
+                    }],
+                },
+            },
+            {
+                # Replace this with your own domain!
+                'host': 'myserviceb.foo.org',
+                'http': {
+                    'paths': [{
+                        'pathType': 'Prefix',
+                        'path': '/',
+                        'backend': {
+                            'service': {
+                                'name': app_names[1],
+                                'port': { 'number': 80 },
+                            },
+                        },
+                    }],
+                },
+            },
+        ],
+    },
+)
+
+pulumi.export('app_statuses', apps)
+pulumi.export('controller_status', ctrl.status)

examples/simple-nginx-py/requirements.txt

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+pulumi>=3.0.0,<4.0.0
+pulumi-kubernetes>=3.0.0,<4.0.0