Hello World Web Server¶

A simple "Hello World" web server using the Red Hat Hardened Nginx image.

Create a namespace:
```
oc new-project hello-world
```

Create a ConfigMap with the page content:

oc create configmap hello-world-html \
  --from-literal=index.html='<html><body><h1>Hello World!</h1></body></html>' \
  -n hello-world

Create the Deployment:

apiVersion: apps/v1
kind: Deployment
metadata:
  name: hello-world
  namespace: hello-world
spec:
  replicas: 2
  selector:
    matchLabels:
      app: hello-world
  template:
    metadata:
      labels:
        app: hello-world
    spec:
      containers:
        - name: nginx
          image: registry.redhat.io/hi/nginx:latest
          ports:
            - containerPort: 8080
          resources:
            requests:
              memory: "32Mi"
              cpu: "50m"
            limits:
              memory: "64Mi"
              cpu: "100m"
          volumeMounts:
            - name: html
              mountPath: /opt/app-root/src
              readOnly: true
      volumes:
        - name: html
          configMap:
            name: hello-world-html

oc apply -f hello-world.yaml

Create a Service and Route:

oc expose deployment hello-world --port=8080
oc expose service hello-world

Verify it's running:

oc get pods -n hello-world
ROUTE=$(oc get route hello-world -o jsonpath='{.spec.host}')
curl http://$ROUTE

You should see: Hello World!