Second Assignment

.gitignore

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+*.tar
+uploads/

z1/Dockerfile.frontend

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+FROM nginx:alpine
+
+RUN rm -rf /usr/share/nginx/html/*
+
+COPY frontend/ /usr/share/nginx/html/
+
+EXPOSE 80

z1/frontend/Dockerfile

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+FROM nginx:alpine
+
+RUN rm -rf /usr/share/nginx/html/*
+
+COPY . /usr/share/nginx/html/
+
+EXPOSE 80

z2/Dockerfile.backend

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+FROM node:18
+WORKDIR /app
+COPY backend/ .
+RUN npm install
+EXPOSE 3000
+CMD ["node", "server.js"]

z2/k8s/deployment.yaml

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+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: backend
+  namespace: z2
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: backend
+  template:
+    metadata:
+      labels:
+        app: backend
+    spec:
+      containers:
+        - name: backend
+          image: z2_backend:latest
+          imagePullPolicy: Never
+          ports:
+            - containerPort: 3000
+          volumeMounts:
+            - name: uploads-volume
+              mountPath: /app/uploads
+      volumes:
+        - name: uploads-volume
+          emptyDir: {}
+
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: frontend
+  namespace: z2
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: frontend
+  template:
+    metadata:
+      labels:
+        app: frontend
+    spec:
+      containers:
+      - name: frontend
+        image: z2_frontend:latest
+        imagePullPolicy: Never
+        ports:
+        - containerPort: 80

z2/k8s/namespace.yaml

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+apiVersion: v1
+kind: Namespace
+metadata:
+  name: z2

z2/k8s/service.yaml

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+apiVersion: v1
+kind: Service
+metadata:
+  name: backend-service
+  namespace: z2
+spec:
+  selector:
+    app: backend
+  ports:
+    - port: 3000
+      targetPort: 3000
+
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: frontend-service
+  namespace: z2
+spec:
+  type: NodePort
+  selector:
+    app: frontend
+  ports:
+    - port: 80
+      targetPort: 80
+      nodePort: 30007

z2/k8s/statefulset.yaml

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+apiVersion: v1
+kind: Service
+metadata:
+  name: mongo
+  namespace: z2
+  labels:
+    app: mongo
+spec:
+  clusterIP: None
+  selector:
+    app: mongo
+  ports:
+    - port: 27017
+      targetPort: 27017
+
+---
+apiVersion: apps/v1
+kind: StatefulSet
+metadata:
+  name: mongo
+  namespace: z2
+spec:
+  serviceName: mongo
+  replicas: 1
+  selector:
+    matchLabels:
+      app: mongo
+  template:
+    metadata:
+      labels:
+        app: mongo
+    spec:
+      containers:
+        - name: mongo
+          image: mongo:6
+          ports:
+            - containerPort: 27017
+          volumeMounts:
+            - name: mongo-storage
+              mountPath: /data/db
+  volumeClaimTemplates:
+    - metadata:
+        name: mongo-storage
+      spec:
+        accessModes:["ReadWriteOnce"] 
+        resources:
+          requests:
+            storage: 1Gi

z2/prepare-app.sh

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+#!/bin/bash
+
+echo "Preparing application..."
+
+# FRONTEND
+cd ../z1/frontend
+docker build -t z2_frontend:latest .
+docker save z2_frontend:latest -o frontend.tar
+microk8s ctr image import frontend.tar
+
+# BACKEND
+cd ../backend
+docker build -t z2_backend:latest .
+docker save z2_backend:latest -o backend.tar
+microk8s ctr image import backend.tar
+
+echo "Preparation done!"

z2/start-app.sh

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+#!/bin/bash
+
+echo "Starting Kubernetes application..."
+
+microk8s kubectl apply -f k8s/namespace.yaml
+microk8s kubectl apply -f k8s/statefulset.yaml
+microk8s kubectl apply -f k8s/deployment.yaml
+microk8s kubectl apply -f k8s/service.yaml
+
+echo "Application started!"
+echo "Open: http://147.232.204.210:30007"

z2/stop-app.sh

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+#!/bin/bash
+
+echo "Stopping Kubernetes application..."
+
+microk8s kubectl delete -f k8s/
+
+echo "Application stopped!"