Configuring applications

Configuring an application is a simple and straightforward experience thanks to ConfigMaps and Secrets. Let’s take a look at each of them.

Understanding ConfigMaps

A ConfigMap is simply a Kubernetes object that stores configuration data in key-value pairs. This configuration data can then be used to configure the software running in a container by configuring a pod to consume ConfigMaps using environment variables, command-line arguments, or mounting a volume with configuration files.

You can also use a YAML definition to define configmap as follows:

  apiVersion: v1

  kind: ConfigMap

  metadata:

    name: melon-configmap

  data:

    myKey: myValue

    myFav: myHome

Your output should look as follows:

configmap/melon-configmap created

You can check configmap using the following command:

kubectl get configmap

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