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Service

  • Ingresses
  • Ingress Classes
  • Services

Services via Terminal​

Create a service​

Example for the nginx deployment:

# kubectl create service [TYPE] [NAME] --tcp=[PORT]:[TARGET-PORT]
kubectl create service nodeport nginx-service --tcp=80:80

Refer to services on pods with the corresponding labels

# kubectl set selector service [NAME] [KEY]=[VALUE]
kubectl set selector service nginx-service app=nginx-deployment

Output all services:

kubectl get service nginx-service -o wide
NAME            TYPE        CLUSTER-IP   EXTERNAL-IP   PORT(S)   AGE     SELECTOR
nginx-service   ClusterIP   10.43.45.1   <none>        80/TCP    8m51s   app=nginx-deployment

Now you can open the Nginx start page in your browser at http://192.168.178.52:31133/.

Delete a Service​

Deletes the specified resource and all objects created with it.

kubectl delete service httpd-service
service "httpd-service" deleted

Services via YAML​

Example for the httpd deployment:

Apply a YAML file:​

Create a YAML file, for example, with vi:

kubectl apply -f [path/to/file.yaml]
vi httpd-service.yaml
apiVersion: v1        # The API version used for the Service resource.
kind: Service         # Defines the resource type
metadata:             # Contains the Service name and labels for identification.
  name: httpd-service
  labels:
    app: httpd
spec:                 # Describes how the Service behaves.
  type: NodePort
  selector:
    app: httpd
  ports:
    - port: 80        # Port exposed by the Service (inside the cluster)
      targetPort: 80  # Port on the container (Pod)
      nodePort: 30080 # Fixed port on the Node (must be between 30000–32767)
kubectl apply -f ./httpd-service.yaml
service/httpd-nodeport created
kubectl get service
NAME               TYPE        CLUSTER-IP     EXTERNAL-IP   PORT(S)        AGE
httpd-service      NodePort    10.43.98.216   <none>        80:30080/TCP   56s
kubernetes         ClusterIP   10.43.0.1      <none>        443/TCP        8d
nginx-service      NodePort    10.43.45.1     <none>        80:31133/TCP   19m