nginx-service.md

Exposing a Service for Nginx Pod

Instructions

1. Edit your previously created YAML file "nginx-pod.yaml" with the following criteria:

   a.) a label "app: nginx"

   b.) expose the container port 80

2. Create the Pod

3. Enter the Pod's shell

4. Echo "connection successful" to /usr/share/nginx/html/index.html

5. Exit the shell

6. Create a YAML file named "nginx-service.yaml" with the following criteria:

   a.) the kind is set to Service

   b.) a label "app: nginx"

   c.) port set to 80 and a protocol of TCP

   d.) selector set to "app:nginx"

7. Create the service resouce within the cluster

8. Check that the service is running

9. Inspect the service and note the IP address & TargetPort

10. Curl the service's <IP_Address:TargetPort>

11. Delete the resources created

Solution

1. apiVersion: v1
   kind: Pod
   metadata:
     name: nginx-test
     labels:
       app: nginx
   spec:
     volumes:
     - name: data
       emptyDir: {}
     containers:
     - name: nginx
       image: nginx
       volumeMounts:
       - name: data
         mountPath: /usr/share/nginx/html
       ports:
       - containerPort: 80
   

2. oc create -f nginx-pod.yaml

3. oc exec -it nginx-test /bin/bash

4. echo connection successful > /usr/share/nginx/html/index.html

5. exit

6. apiVersion: v1
   kind: Service
   metadata:
     name: nginx-test
     labels:
       app: nginx
   spec:
     ports:
     - port: 80
       protocol: TCP
     selector:
       app: nginx
   

7. oc create -f nginx-service.yaml

8. oc get service

9. oc describe service/nginx-test.yaml

10. curl <IP_address:TargetPort>

11. oc delete -f nginx-pod kubectl delete -f nginx-service