Kubernetes and Istio manifests needed to get my app running within an…

… Istio service mesh. * `ctmd.yml` is the main k8s manifest for the app. `istioctl kube-inject` is used to inject Istio sidecars etc when the manifest is written into a k8s cluster. * `ctmd-mongo-egress.yml` defines a basic Istio egress rule, allowing my app to talk to an external mongo cluster * `gateway.yml` opens an ingress into my service mesh, allowing http traffic to hit my service See https://morganpeat.github.io/microservices/2018/08/30/cryptotracker-d.html
MorganPeat · Aug 30, 2018 · 45958c9 · 45958c9
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diff --git a/ctmd-mongo-egress.yml b/ctmd-mongo-egress.yml
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+apiVersion: networking.istio.io/v1alpha3
+kind: ServiceEntry
+metadata:
+  name: mongo-ext
+spec:
+  hosts:
+  - ignored-as-not-http.com
+  addresses:
+  - 0.0.0.0/0
+  ports:
+  - number: 27017
+    name: mongo
+    protocol: MONGO
+  location: MESH_EXTERNAL
+  resolution: NONE
+
diff --git a/ctmd.yml b/ctmd.yml
@@ -0,0 +1,41 @@
+##################################################################################################
+# Market Data service
+##################################################################################################
+apiVersion: v1
+kind: Service
+metadata:
+  name: marketdata
+  labels:
+    app: marketdata
+spec:
+  ports:
+  - port: 80
+    name: http
+    targetPort: 8080
+  selector:
+    app: marketdata
+---
+apiVersion: extensions/v1beta1
+kind: Deployment
+metadata:
+  name: marketdata-v1
+spec:
+  replicas: 1
+  template:
+    metadata:
+      labels:
+        app: marketdata
+        version : 1
+    spec:
+      containers:
+      - name: marketdata
+        image: morganpeat/cryptotracker
+        imagePullPolicy: Always
+        ports:
+        - containerPort: 8080
+        env:
+        - name: MongoDB__ConnectionString
+          valueFrom:
+            secretKeyRef:
+              key: MongoDB__ConnectionString
+              name: ctmd-config
diff --git a/gateway.yml b/gateway.yml
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+apiVersion: networking.istio.io/v1alpha3
+kind: Gateway
+metadata:
+  name: ctmd-gateway
+spec:
+  selector:
+    istio: ingressgateway # use Istio default gateway implementation
+  servers:
+  - port:
+      number: 80
+      name: http
+      protocol: HTTP
+    hosts:
+    - "*"
+---
+apiVersion: networking.istio.io/v1alpha3
+kind: VirtualService
+metadata:
+  name: ctmd
+spec:
+  hosts:
+  - "*"
+  gateways:
+  - ctmd-gateway
+  http:
+  - match:
+    - uri:
+        prefix: /api
+    route:
+    - destination:
+        port:
+          number: 80
+        host: marketdata