When you need to run an easily-customisable echoserver on Kubernetes

kubernetes-pod-python-ecoserver.yaml

apiVersion: v1
kind: Pod
metadata:
  name: test-echoserver
spec:
  containers:
    - name: main
      image: python:latest
      ports:
        - containerPort: 8080
          name: http
      command:
        - python
        - /app/server.py
      volumeMounts:
        - name: config-volume
          mountPath: /app
  volumes:
    - name: config-volume
      configMap:
        name: test-cm
        items:
          - key: server.py
            path: server.py
---
apiVersion: v1
kind: ConfigMap
metadata:
  name: test-cm
data:
  server.py: |
    #!/usr/bin/env python3
    import http.server as SimpleHTTPServer
    import socketserver as SocketServer
    import logging
    PORT = 8080
    class Getter(SimpleHTTPServer.SimpleHTTPRequestHandler):
        def do_GET(self):
            logging.error(self.headers)
            SimpleHTTPServer.SimpleHTTPRequestHandler.do_GET(self)
    Handler = Getter
    httpd = SocketServer.TCPServer(("", PORT), Handler)
    httpd.serve_forever()