Add Kubernetes deployment instructions and update service configurations; introduce deploy script and adjust resource limits

Author: giovanninocco

README.md

@@ -528,6 +528,15 @@ Following commands are useful to build and push the images one by one
 ./src/apps/scripts/push-images.sh
 ```
 
+### How to deploy the application on Kubernetes
+
+You can deploy the application on Kubernetes cluster.
+
+``` bash
+# Build images
+./src/apps/scripts/deploy-k8s.sh
+```
+
 
 ### Deploy in a cloud instance
 

src/apps/k8s/apigateway.yml

@@ -47,6 +47,15 @@ spec:
                 secretKeyRef:
                   name: gnx-app-secrets
                   key: MONGODB_CONNECTION_STRING
+            # Reverse Proxy
+            - name: reverseProxy__clusters__identities-cluster__destinations__destination1__address
+              value: http://identities-svc
+            - name: reverseProxy__clusters__products-cluster__destinations__destination1__address
+              value: http://products-svc
+            - name: reverseProxy__clusters__orders-cluster__destinations__destination1__address
+              value: http://orders-svc
+            - name: reverseProxy__clusters__notifications-cluster__destinations__destination1__address
+              value: http://notifications-svc
 
           ports:
             - containerPort: 8080 # Port the container exposes

src/apps/k8s/notifications.yml

@@ -17,7 +17,7 @@ spec:
     spec:
       containers:
         - name: notifications-container
-          image: genocs/notifications-webapi:1.0.3 # Replace with your image
+          image: genocs/notifications-webapi:1.0.4 # Replace with your image
           env:
             - name: ASPNETCORE_ENVIRONMENT
               value: "Development"
@@ -52,11 +52,11 @@ spec:
             - containerPort: 8080 # Port the container exposes
           resources: # Optional resource requests and limits
             requests:
+              cpu: 50m
+              memory: 100Mi
+            limits:
               cpu: 100m
               memory: 200Mi
-            limits:
-              cpu: 200m
-              memory: 400Mi
 
 ---
 # notifications-service.yml

src/apps/k8s/orders.yml

@@ -47,16 +47,18 @@ spec:
                 secretKeyRef:
                   name: gnx-app-secrets
                   key: MONGODB_CONNECTION_STRING
+            - name: httpclient__services__products
+              value: "http://products-svc"
 
           ports:
             - containerPort: 8080 # Port the container exposes
           resources: # Optional resource requests and limits
             requests:
+              cpu: 50m
+              memory: 100Mi
+            limits:
               cpu: 100m
               memory: 200Mi
-            limits:
-              cpu: 200m
-              memory: 400Mi
 
 ---
 # orders-service.yml

src/apps/k8s/products.yml

@@ -52,11 +52,11 @@ spec:
             - containerPort: 8080 # Port the container exposes
           resources: # Optional resource requests and limits
             requests:
+              cpu: 50m
+              memory: 100Mi
+            limits:
               cpu: 100m
               memory: 200Mi
-            limits:
-              cpu: 200m
-              memory: 400Mi
 
 ---
 # products-service.yml

src/apps/scripts/build-images.sh

@@ -6,21 +6,20 @@ cd ./src/apps
 export $(grep -v '^#' ./local.env | xargs)
 
 
-
 # Build the api gateway
 docker build -t genocs/apigateway:$IMAGE_VERSION -t genocs/apigateway:latest -f ./apigateway.dockerfile .
 
 # Build the identities service
-docker build -t genocs/identities:$IMAGE_VERSION -t genocs/identities:latest -f ./identities.dockerfile .
+docker build -t genocs/identities-webapi:$IMAGE_VERSION -t genocs/identities-webapi:latest -f ./identities.dockerfile .
 
 # Build the products service
-docker build -t genocs/products:$IMAGE_VERSION -t genocs/products:latest -f ./products.dockerfile .
+docker build -t genocs/products-webapi:$IMAGE_VERSION -t genocs/products-webapi:latest -f ./products.dockerfile .
 
 # Build the orders service
-docker build -t genocs/orders:$IMAGE_VERSION -t genocs/orders:latest -f ./orders.dockerfile .
+docker build -t genocs/orders-webapi:$IMAGE_VERSION -t genocs/orders-webapi:latest -f ./orders.dockerfile .
 
 # Build the notifications service
-docker build -t genocs/notifications:$IMAGE_VERSION -t genocs/notifications:latest -f ./notifications.dockerfile .
+docker build -t genocs/notifications-webapi:$IMAGE_VERSION -t genocs/notifications-webapi:latest -f ./notifications.dockerfile .
 
 cd ..
 cd ..

src/apps/scripts/deploy-k8s.sh

@@ -0,0 +1,7 @@
+#!/bin/bash
+
+
+for service in apigateway identities products orders notifications
+do
+    microk8s kubectl apply -f ./$service.yml
+done