Test

2022-08-01-getting-started-with-k8s/.gitignore

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+venv
+__pycache__

2022-08-01-getting-started-with-k8s/Dockerfile

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+FROM python:3.9
+
+WORKDIR /code
+
+COPY ./requirements.txt /code/requirements.txt
+
+RUN pip install --no-cache-dir --upgrade -r /code/requirements.txt
+
+COPY ./app /code/app
+
+CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "80"]

2022-08-01-getting-started-with-k8s/README.md

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+# Getting Started with Kubernetes
+
+Video: https://www.youtube.com/watch?v=XltFOyGanYE
+
+## Python Application
+
+### Create a virtual environment:
+```bash
+python3 -m venv ./venv
+source ./venv/bin/activate
+```
+
+### Install the Dependencies
+```bash
+pip install -r requirements.txt
+```
+
+### Start the App
+```bash
+uvicorn main:app --reload
+```
+
+## Containerize the Application
+
+```bash
+docker build -t <IMAGE_TAG> .
+
+docker push -t <IMAGE_TAG>
+```
+
+## Deploy to Kubernetess:
+
+```bash
+export KUBECONFIG=<PATH_TO_KUBE_CONFIG>
+
+kubectl apply -f .
+
+kubectl get pods 
+```
+
+### Validation and Debugging
+
+```bash
+kubectl port-forward <POD_NAME> 8080:80
+
+kubectl exec -it <POD_NAME> -- bash
+```

2022-08-01-getting-started-with-k8s/app/main.py

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+from fastapi import FastAPI
+
+import os
+
+app = FastAPI()
+
+
+@app.get("/")
+def read_root():
+    return {"Hello": f"From: {os.environ.get('HOSTNAME', 'DEFAULT_ENV')}"}

2022-08-01-getting-started-with-k8s/kubernetes/deployment.yaml

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+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: fast-api
+  labels:
+    app: fast-api
+spec:
+  replicas: 3
+  selector:
+    matchLabels:
+      app: fast-api
+  template:
+    metadata:
+      labels:
+        app: fast-api
+    spec:
+      containers:
+      - name: fast-api
+        image: sidpalas/k8s-getting-started:0.0.3
+        ports:
+        - containerPort: 80
+        resources:
+          requests:
+            cpu: 200m
+            memory: 300Mi
+          limits:
+            memory: 400Mi
+        env:
+          - name: ENV
+            value: "CIVO"

2022-08-01-getting-started-with-k8s/kubernetes/ingress.yaml

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+apiVersion: networking.k8s.io/v1
+kind: Ingress
+metadata:
+  name: fast-api
+spec:
+  rules:
+    - host: k8s.devopsdirective.com
+      http:
+        paths:
+          - path: /
+            pathType: Exact
+            backend:
+              service:
+                name:  fast-api
+                port:
+                  number: 80

2022-08-01-getting-started-with-k8s/kubernetes/service.yaml

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+apiVersion: v1
+kind: Service
+metadata:
+  name: fast-api
+spec:
+  selector:
+    app: fast-api
+  ports:
+    - protocol: TCP
+      port: 80
+      targetPort: 80

2022-08-01-getting-started-with-k8s/requirements.txt

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+fastapi~=0.79
+uvicorn~=0.18