This repository contains the YAML files used in the video tutorial ConfigMap in Kubernetes: Solving Problems with Environment Variables and Creating ConfigMaps. In this video, you will learn how to use ConfigMaps to manage configuration data in your Kubernetes cluster.

Before starting with this tutorial, you should have a basic understanding of Kubernetes and how to create a pod, service, and deployment. You should also have the kubectl command-line tool installed and configured to interact with your Kubernetes cluster.

To create a ConfigMap from a literal value, use the following command:

kubectl create configmap configmap-1 --from-literal=name=first-configmap

To create a ConfigMap from multiple literal values, use the following command:

kubectl create configmap configmap-2 --from-literal=name=second-configmap --from-literal=color=blue

To create a ConfigMap from a file, use the following command:

kubectl create configmap configmap-3 --from-file=data-file

To apply the YAML files provided in this repository, use the following command:

kubectl apply -f <file-name.yaml>

To see the pods running in your Kubernetes cluster, use the following command:

kubectl get pods

To see the ConfigMaps created in your Kubernetes cluster, use the following command:

kubectl get cm

To see the environment variables set in a running pod, use the following command:

kubectl exec -it <pod-name> -- printenv

To go inside a running pod, use the following command:

kubectl exec -it <pod-name> -- bash

In this tutorial, you learned how to use ConfigMaps to manage configuration data in your Kubernetes cluster. ConfigMaps can be used to store configuration data as key-value pairs or as files. You can then use environment variables or volume mounts to make this data available to your applications running in Kubernetes.

Thank you for watching this tutorial. If you have any questions or feedback, please don't hesitate to open an issue or submit a pull request to this repository.