ConfigMaps and Secrets — How They Actually Work?

📰 Medium · DevOps

Learn how ConfigMaps and Secrets work in Kubernetes to manage configuration and sensitive data

intermediate Published 22 Jun 2026
Action Steps
  1. Create a ConfigMap using the Kubernetes CLI to store non-sensitive configuration data
  2. Apply a ConfigMap to a Deployment to inject configuration data as environment variables
  3. Use Secrets to store sensitive data such as passwords and API keys
  4. Mount a Secret as a volume in a Pod to access sensitive data
  5. Update a ConfigMap or Secret and verify that the changes are reflected in the application
Who Needs to Know This

DevOps engineers and developers can benefit from understanding how to use ConfigMaps and Secrets to manage application configuration and sensitive data

Key Insight

💡 ConfigMaps and Secrets are used to decouple configuration and sensitive data from application code

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🔒 Understand how ConfigMaps and Secrets work in #Kubernetes to manage config and sensitive data

Full Article

You’ve been stuffing configuration into ConfigMaps and Secrets since your first Deployment. But do you know why env vars don’t update, why… Continue reading on Medium »
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