ConfigMaps¶

Description¶

A ConfigMap stores configuration data for applications running in Kubernetes.

ConfigMaps allow you to separate configuration from container images.

Applications can consume ConfigMaps as:

• environment variables
• configuration files
• command-line arguments

Example ConfigMap¶

apiVersion: v1
kind: ConfigMap
metadata:
  name: app-config
data:
  APP_ENV: production
  LOG_LEVEL: info

Using ConfigMap as Environment Variables¶

envFrom:
- configMapRef:
    name: app-config

Common Commands¶

Create ConfigMap:

kubectl apply -f configmap.yaml

View ConfigMaps:

kubectl get configmaps

Use Cases¶

ConfigMaps are commonly used for:

• application configuration
• environment variables
• feature flags

Related Resources¶

• Secrets
• Pods