.

k8s/apps/deploy-pyserver.txt

@@ -0,0 +1,25 @@
+cd pyserver
+docker build -t localhost:5000/pyserver:0.1 -f Dockerfile .
+# docker build -t sahlawat/pyserver:0.1 -f Dockerfile .
+docker run -it -p 8080:8080 --rm localhost:5000/pyserver:0.1
+# curl localhost:8080
+# docker run -d -p 8080:8080 diyit/pyserver:0.1
+
+docker push localhost:5000/pyserver:0.1
+
+kubectl create namespace demo
+kubectl config set-context --current --namespace=demo
+
+kubectl create deployment myapp --image=localhost:5000/pyserver:0.1
+kubectl expose deployment myapp --port=8080 --type=LoadBalancer
+# kubectl get service
+# kubectl get all
+# curl 172.18.255.200:8080
+
+kubectl scale deployment myapp --replicas=3
+# kubectl get service
+
+kubectl delete service myapp
+kubectl delete deployment myapp
+
+kubectl delete namespace/demo

k8s/apps/pyserver-deployment.yml

@@ -0,0 +1,21 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  labels:
+    app: myapp
+  name: myapp
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: myapp
+  template:
+    metadata:
+      labels:
+        app: myapp
+    spec:
+      containers:
+      - name: myapp
+        image: localhost:5000/pyserver:v1
+        ports:
+          - containerPort: 8080

k8s/apps/pyserver/Dockerfile

@@ -0,0 +1,9 @@
+FROM python:3.8-slim-buster
+WORKDIR /usr/src/app
+COPY requirements.txt ./
+RUN pip install --upgrade pip
+RUN pip install --no-cache-dir -r requirements.txt
+COPY . .
+ENTRYPOINT ["python"]
+EXPOSE 8080
+CMD ["app.py"]

k8s/apps/pyserver/app.py

@@ -0,0 +1,14 @@
+from flask import Flask
+import os
+
+app = Flask(__name__)
+
+
+@app.route('/')
+def hello_world(count=0):
+    count += 1
+    return "Hello World! #" + str(count) + "\nfrom: " + os.getenv('HOSTNAME', "unknown") + "\n"
+
+
+if __name__ == '__main__':
+    app.run(host='0.0.0.0', port='8080')

k8s/apps/pyserver/requirements.txt

@@ -0,0 +1,3 @@
+flask
+flask_cors
+dapr

k8s/apps/pyserver/service.yaml

@@ -0,0 +1,35 @@
+kind: Pod
+apiVersion: v1
+metadata:
+  name: pyserver
+  labels:
+    app: pyserver
+spec:
+  containers:
+  - name: pyserver
+    image: localhost:5000/pyserver:0.1
+---
+kind: Service
+apiVersion: v1
+metadata:
+  name: pyserver
+spec:
+  selector:
+    app: pyserver
+  ports:
+  # Port used by the Docker image
+  - port: 8080
+---
+apiVersion: networking.k8s.io/v1
+kind: Ingress
+metadata:
+  name: pyserver-ingress
+spec:
+  rules:
+  - http:
+      paths:
+      - path: /
+        backend:
+          serviceName: pyserver
+          servicePort: 8080
+---