Steps to create Port Forwarding in Kubernetes

In this blog, we will show you the steps to create Port Forwarding in Kubernetes Environment.

REQUIREMENTS

• 2 Node Cluster ( 1 Master VM with 2 Nodes)

• Kubernetes Components

INFRASTRUCTURE OVERVIEW

• We have already installed and configured the 2 Node cluster in our demo environment.

• Please check the URL https://www.assistanz.com/steps-to-install-kubernetes-cluster-manually-using-centos-7/ for more information.

CREATING A POD USING KUBECTL COMMAND

• Login to the kubernetes master server through putty.

• Use the below command to create a POD.

Syntax: kubectl run --image= --port= --generator=run-pod/v1 Example: kubectl run web-pod --image=nginx --port=80 --generator=run-pod/v1

• POD created successfully.

• For more information about the generator, please check this URL https://kubernetes.io/docs/reference/kubectl/conventions/#generators

• The new POD is available on the list.

• We can also view the detailed information about the POD using describe command.

kubectl describe pods web-pod

CONFIGURE PORT FORWARDING

• Use the below command to create a Port forwarding for a container.

Syntax: kubectl port-forward : Example: kubectl port-forward web-pod 8888:80

• The port forwarding is in running state.

• Open a duplicate session of the master server and access the container using the command.

curl 127.0.0.1:8888

• You can able to see the nginx homepage.

• This is an easy method to verify the container ports without creating the services.

KUBERNETES LOGS

• We can verify the POD logs using the below command.

Syntax: kubectl logs Example: kubectl logs web-pod

• You can able to see the POD logs as shown below.

OTHER KUBERNETES COMMANDS

• Use the below command to display the POD internal IP.

kubectl get pods -o wide

• To display the POD configuration in YAML format.

Syntax: kubectl get pods -o yaml Example: kubectl get pods web-pod -o yaml

• To display the POD configuration in JSON format.

kubectl get pods web-pod -o json Thanks for reading this blog. We hope it was useful for you to learn about port forwarding in the kubernetes environment.