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Kubernetes: ConfigMaps and Secrets

ConfigMaps and Secrets serve as the primary mechanisms for decoupling environment-specific configuration from application code, allowing the same container image to run seamlessly across development, staging, and production environments. A ConfigMap is designed for non-sensitive data, such as environment variables, command-line arguments, or configuration files. Whereas, a Secret is intended for sensitive information like passwords, API keys, and TLS certificates. While Secrets are obfuscated using Base64 encoding to prevent accidental exposure in logs or terminal outputs, they are not encrypted by default. To achieve true security, you must enable encryption at rest within the cluster or integrate with an external vault. Both resources can be injected into a Pod as environment variables or mounted as files via volumes. When mounted as volumes, Kubernetes can dynamically update the files within the container when the source resource changes, whereas environment variables require a Pod restart to reflect updates. To know more, please visit - https://kubernetes.io/docs/concepts/c... https://kubernetes.io/docs/tasks/conf... https://kubernetes.io/docs/concepts/c...