add basic redis and flask project template with deployment and build …

…scripts

.gitignore

@@ -1 +1,2 @@
+.idea
 .DS_Store

deploy-charts-cluster.sh

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+#!/usr/bin/env bash
+
+helm repo add bitnami https://charts.bitnami.com/bitnami
+helm repo add ingress-nginx https://kubernetes.github.io/ingress-nginx
+
+helm repo update
+
+helm install -f helm-config/redis-helm-values.yaml redis bitnami/redis
+helm install -f helm-config/nginx-helm-values.yaml nginx ingress-nginx/ingress-nginx

deploy-charts-minikube.sh

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+#!/usr/bin/env bash
+
+helm repo add bitnami https://charts.bitnami.com/bitnami
+helm repo update
+
+helm install -f helm-config/redis-helm-values.yaml redis bitnami/redis

docker-compose.yml

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+version: "3"
+services:
+
+  gateway:
+    image: nginx:latest
+    volumes:
+      - ./gateway_nginx.conf:/etc/nginx/nginx.conf:ro
+    ports:
+      - "8000:80"
+
+  order-service:
+    build: ./order
+    image: order:latest
+    environment:
+      - GATEWAY_URL=http://gateway:80
+    command: gunicorn -b 0.0.0.0:5000 app:app
+    env_file:
+      - env/order_redis.env
+
+  order-db:
+    image: redis:latest
+    command: redis-server --requirepass redis --maxmemory 512mb
+
+  stock-service:
+    build: ./stock
+    image: stock:latest
+    command: gunicorn -b 0.0.0.0:5000 app:app
+    env_file:
+      - env/stock_redis.env
+
+  stock-db:
+    image: redis:latest
+    command: redis-server --requirepass redis --maxmemory 512mb
+
+  payment-service:
+    build: ./payment
+    image: user:latest
+    command: gunicorn -b 0.0.0.0:5000 app:app
+    env_file:
+      - env/payment_redis.env
+
+  payment-db:
+    image: redis:latest
+    command: redis-server --requirepass redis --maxmemory 512mb

env/order_redis.env

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+REDIS_HOST=order-db
+REDIS_PORT=6379
+REDIS_PASSWORD=redis
+REDIS_DB=0

env/payment_redis.env

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+REDIS_HOST=payment-db
+REDIS_PORT=6379
+REDIS_PASSWORD=redis
+REDIS_DB=0

env/stock_redis.env

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+REDIS_HOST=stock-db
+REDIS_PORT=6379
+REDIS_PASSWORD=redis
+REDIS_DB=0

gateway_nginx.conf

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+events { worker_connections 2048;}
+
+http {
+    upstream order-app {
+        server order-service:5000;
+    }
+    upstream payment-app {
+        server payment-service:5000;
+    }
+    upstream stock-app {
+        server stock-service:5000;
+    }
+    server {
+        listen 80;
+        location /orders/ {
+           proxy_pass   http://order-app/;
+        }
+        location /payment/ {
+           proxy_pass   http://payment-app/;
+        }
+        location /stock/ {
+           proxy_pass   http://stock-app/;
+        }
+        access_log  /var/log/nginx/server.access.log;
+    }
+    access_log  /var/log/nginx/access.log;
+}

helm-config/nginx-helm-values.yaml

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+resources:
+  limits:
+    cpu: 500m
+    memory: 1Gi
+  requests:
+    cpu: 500m
+    memory: 1Gi

helm-config/redis-helm-values.yaml

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+auth:
+  password: redis
+master:
+  persistence:
+    size: 4Gi
+  resources:
+    requests:
+      memory: 4Gi
+      cpu: 2
+replica:
+  replicaCount: 1
+  persistence:
+    size: 4Gi
+  resources:
+    requests:
+      memory: 4Gi
+      cpu: 2

k8s/ingress-service.yaml

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+apiVersion: networking.k8s.io/v1
+kind: Ingress
+metadata:
+ name: ingress-service
+ annotations:
+   kubernetes.io/ingress.class: nginx
+   nginx.ingress.kubernetes.io/rewrite-target: /$1
+spec:
+ rules:
+   - http:
+      paths:
+        - path: /orders/?(.*)
+          pathType: Prefix
+          backend:
+            service:
+              name: order-service
+              port:
+                number: 5000
+        - path: /stock/?(.*)
+          pathType: Prefix
+          backend:
+            service:
+              name: stock-service
+              port:
+                number: 5000
+        - path: /payment/?(.*)
+          pathType: Prefix
+          backend:
+            service:
+              name: user-service
+              port:
+                number: 5000

k8s/order-app.yaml

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+apiVersion: v1
+kind: Service
+metadata:
+  name: order-service
+spec:
+  type: ClusterIP
+  selector:
+    component: order
+  ports:
+    - port: 5000
+      name: http
+      targetPort: 5000
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: order-deployment
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      component: order
+  template:
+    metadata:
+      labels:
+        component: order
+    spec:
+      containers:
+        - name: order
+          image: order:latest
+          resources:
+            limits:
+              memory: "1Gi"
+              cpu: "1"
+            requests:
+              memory: "1Gi"
+              cpu: "1"
+          command: ["gunicorn"]
+          args: ["-b", "0.0.0.0:5000", "app:app"]
+          ports:
+            - containerPort: 5000
+          env:
+            - name: USER_SERVICE_URL
+              value: "user-service"
+            - name: STOCK_SERVICE_URL
+              value: "stock-service"
+            - name: REDIS_HOST
+              value: redis-master
+            - name: REDIS_PORT
+              value: '6379'
+            - name: REDIS_PASSWORD
+              value: "redis"
+            - name: REDIS_DB
+              value: "0"

k8s/stock-app.yaml

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+apiVersion: v1
+kind: Service
+metadata:
+  name: stock-service
+spec:
+  type: ClusterIP
+  selector:
+    component: stock
+  ports:
+    - port: 5000
+      name: http
+      targetPort: 5000
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: stock-deployment
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      component: stock
+  template:
+    metadata:
+      labels:
+        component: stock
+    spec:
+      containers:
+        - name: stock
+          image: stock:latest
+          resources:
+            limits:
+              memory: "1Gi"
+              cpu: "1"
+            requests:
+              memory: "1Gi"
+              cpu: "1"
+          command: ["gunicorn"]
+          args: ["-b", "0.0.0.0:5000", "app:app"]
+          ports:
+            - containerPort: 5000
+          env:
+            - name: REDIS_HOST
+              value: redis-master
+            - name: REDIS_PORT
+              value: '6379'
+            - name: REDIS_PASSWORD
+              value: "redis"
+            - name: REDIS_DB
+              value: "0"

k8s/user-app.yaml

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+apiVersion: v1
+kind: Service
+metadata:
+  name: user-service
+spec:
+  type: ClusterIP
+  selector:
+    component: user
+  ports:
+    - port: 5000
+      name: http
+      targetPort: 5000
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: user-deployment
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      component: user
+  template:
+    metadata:
+      labels:
+        component: user
+    spec:
+      containers:
+        - name: user
+          image: user:latest
+          resources:
+            limits:
+              memory: "1Gi"
+              cpu: "1"
+            requests:
+              memory: "1Gi"
+              cpu: "1"
+          command: ["gunicorn"]
+          args: ["-b", "0.0.0.0:5000", "app:app"]
+          ports:
+            - containerPort: 5000
+          env:
+            - name: REDIS_HOST
+              value: redis-master
+            - name: REDIS_PORT
+              value: '6379'
+            - name: REDIS_PASSWORD
+              value: "redis"
+            - name: REDIS_DB
+              value: "0"

order/Dockerfile

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+FROM python:3.10-slim
+
+WORKDIR /home/flask-app
+
+COPY ./requirements.txt .
+
+RUN pip install -r requirements.txt
+
+COPY . .
+
+EXPOSE 5000