Kubernetes ConfigMap and Secret
Introduction This article will guide you on how to use ConfigMap and Secret to pass environment variables. As you know, during software development, you need to deploy on different environments such as development, staging, and production. We aim to use the same codebase across these environments but sometimes need to pass different environment variables for specific configurations. Kubernetes (K8s) supports ConfigMap and Secret to address this need. If you've used Docker before, configuring environment variables in K8s will feel similar. ConfigMap is an object that stores data in key-value pairs, intended for non-sensitive information (i.e., values that can be displayed when viewing the configuration of K8s resources). Supported data types include number , boolean , and string (it can store a string of characters or the contents of a text file). Secret has several types, with type=Opaque being the most commonly used. It works similarly to ConfigMap but is used for sensit...