docker-development-youtube-series/kubernetes/pods/pod-sidecar.yaml

# kind create cluster --name pods --image kindest/node:v1.31.1
apiVersion: v1
kind: Pod
metadata:
  name: example-pod
  namespace: default
  labels:
    app: example-app
spec:
  shareProcessNamespace: true
  nodeSelector:
    kubernetes.io/os: linux
  containers:
  - name: config-watcher
    image: alpine:latest
    command: ["/bin/sh", "-c"]
    args:
    - | 
      apk add --no-cache inotify-tools
      while true; do
        inotifywait -e modify /etc/nginx/nginx.conf 
        pkill -HUP nginx 
      done
    volumeMounts:
    - name: config-volume
      mountPath: /etc/nginx/
  - name: nginx
    image: nginx:latest
    imagePullPolicy: Always
    ports:
    - containerPort: 80
    volumeMounts:
    - name: config-volume
      mountPath: /etc/nginx/
  volumes:
  - name: config-volume
    configMap:
      name: nginx-config
---
apiVersion: v1
kind: ConfigMap
metadata:
  name: nginx-config
data:
  nginx.conf: |
    events {}
    http {
      server {
            listen 80;
            server_name localhost;

             location / {
                root /usr/share/nginx/html;
                index index.html index.htm;
            }

            location = /health {
                access_log off;
                default_type text/plain;
                add_header Content-Type text/plain;
                return 200 "ok";
            }
      }
    }