What is the parameter to configure the default tags attached to metrics emitted by containers on Kubernetes?

The correct parameter to configure the default tags attached to metrics emitted by containers on Kubernetes is DD_DEFAULT_TAGS. This parameter allows users to specify a set of tags that will automatically be added to all metrics emitted by containers. Tags play an essential role in organizing and filtering data within Datadog, and by setting default tags, users can ensure that their metrics are easily categorized and can be readily searched or reported on.

In Kubernetes, containerized applications can utilize this parameter to enhance observability by attaching meaningful tags to the metrics they generate. This is particularly useful for environments with multiple containers, as it helps in distinguishing metrics originating from different pods, services, or environments.

While other parameters may address different aspects of monitoring or tagging, they do not specifically govern the default tags for emitted metrics in the way that DD_DEFAULT_TAGS does. This makes DD_DEFAULT_TAGS a key configuration for managing metrics effectively in Kubernetes environments.