To build the Docker image, run the following command:

This command creates a local image named hello_kube with the tag version 1.0.0.

docker buildx build -t hello_kube:1.0.0 .

The following command tags the local image with your remote registry username, making it ready to push to the repository. Please replace aaghamohammadi with your current registry username for the following commands.

docker tag hello_kube:1.0.0 aaghamohammadi/hello_kube:1.0.0

Make sure you log in to your registry in order to push the image.

docker push aaghamohammadi/hello_kube:1.0.0

You can run a simple Pod using an imperative command, although it is not recommended. In the future, we will learn other ways (i.e., declarative) to run pods.

The following command runs a pod named hello-kube with a single container in it. The restart policy for the pod is determined by the --restart flag. Legal values are ["Always", "OnFailure", "Never"]. The default value is "Always".

kubectl run hello-kube --image=aaghamohammadi/hello_kube:1.0.0 --restart=Never

You can list all the pods in the current cluster using:

kubectl get pods

The describe command shows details of a specific resource like a pod. It provides detailed information about a single pod, including its IP address and the node it is running on.

kubectl describe pod hello-kube

To get the full JSON output of a pod, you can use the following command. This is useful for debugging and understanding the pod's configuration and status in detail.

kubectl get pod hello-kube -o json

Kubectl can forward traffic from a node to a Pod, which is a quick way to communicate with a Pod from outside the cluster.

kubectl port-forward pod/hello-kube 8080:80

Now, browse to localhost:8080 in your browser.

To remove the pod and return your Kubernetes environment to a clean state, you can use the following command:

kubectl delete pod hello-kube