Introduction to ConfigMaps
Explore how ConfigMaps in Kubernetes separate application code from configurations, allowing easier management across development, testing, and production environments. Understand how this decoupling simplifies updates, enhances reuse, and improves security by applying configurations dynamically at runtime.
We'll cover the following...
Most business applications have two components:
The application
The configuration
Simple examples include web servers such as NGINX or httpd (Apache). Neither is much use without a configuration. However, as soon as we add a configuration, they become very useful.
In the past, we packaged the application and the configuration into a single easy-to-deploy unit. We brought this pattern with us as we moved into the early days of cloud-native microservices. However, it’s an anti-pattern, and modern applications should be decoupled from their configurations. Doing this brings the following benefits:
Reuse
Simpler development and testing
Simpler and less disruptive changes ...