ConfigMaps and Secrets

ConfigMaps and Secrets are two important Kubernetes objects that allow you to separate configuration data from your application code. This makes your applications more portable, manageable, and secure.

ConfigMaps

ConfigMaps provide a convenient way to pass configuration data into pods in a declarative manner. They allow you to store configuration information without putting them directly in a pod definition or container image. Pods can access the data stored in a ConfigMap through environment variables, command-line arguments, or by mounting the ConfigMap as a volume. Using ConfigMaps enables you to separate your configuration data from your application code.

With the following manifest, you can create a ConfigMap to store configuration files:

config_map.yaml

apiVersion: v1
kind: ConfigMap
metadata:
    name: app-config
data:
    config.properties: |
    app.color=blue
   ...