Title: How to Retrieve the Running Version of Containers in Kubernetes using Key Keywords

Introduction:
In this article, we will explore how to retrieve the running version of containers in a Kubernetes cluster using key keywords. We will guide you step by step on how to achieve this. The process involves executing commands in the Kubernetes environment to extract the necessary information. Let's dive in!

Step by Step Guide:
Here is a step-by-step guide to help you understand and implement the process of retrieving the running version of containers in Kubernetes.

| Step | Description |
| ---- | ----------- |
| 1. | Connect to the Kubernetes cluster |
| 2. | Select the desired namespace |
| 3. | List all pods in the namespace |
| 4. | Fetch the container image details for each pod |

Step 1: Connect to the Kubernetes cluster
To begin, ensure you have the necessary access privileges and connect to the Kubernetes cluster. You can do this by using the 'kubectl' command-line tool. Run the following command:
```
$ kubectl config use-context
```
This command sets the current context to the specified cluster.

Step 2: Select the desired namespace
In Kubernetes, namespaces are used to provide a virtual cluster within a physical cluster. Select the namespace you want to work with. Run the following command:
```
$ kubectl config set-context --current --namespace=
```
Replace `` with the name of your desired namespace.

Step 3: List all pods in the namespace
Now, let's display a list of all the pods running in the selected namespace. Run the following command:
```
$ kubectl get pods
```
This command fetches information about all the pods in the current namespace.

Step 4: Fetch the container image details for each pod
In this final step, we will iterate over each pod and extract the container image details for analysis. Run the following command:
```
$ kubectl get pods -o=jsonpath='{range .items[*]}{.metadata.name}{"\n"}{range .spec.containers[*]}{.name}{"\t"}{.image}{"\n"}{end}{"\n"}{end}'
```
This command retrieves the pod name, container name, and container image details for each container running in the selected namespace.

Explanation of the Code:
- The `kubectl get pods -o=jsonpath` command is used to extract specific information from the JSON output format.
- `range .items[*]` iterates over each pod.
- `{.metadata.name}` fetches the name of the pod.
- `range .spec.containers[*]` iterates over each container inside the pod.
- `{.name}` fetches the name of the container.
- `{.image}` fetches the container image details.
- The `{"\n"}` and `{"\t"}` are utilized for better formatting.

Conclusion:
Congratulations! You have learned how to retrieve the running version of containers in Kubernetes using key keywords. By following the step-by-step guide and using the provided code snippets, you can now obtain the necessary information about container versions in your Kubernetes cluster. Understanding the versioning of containers is essential for managing and ensuring the desired runtime environment. Keep exploring and applying your newfound knowledge to effectively manage your Kubernetes deployments. Happy coding!