...

ingester:
  config:
    hostTagIncludes:
    - kfuse
    - kube_cluster_name
    - kubernetes.io/hostname
    - node.kubernetes.io/instance-type
    - org_id
    - project
    - topology.kubernetes.io/region
    - topology.kubernetes.io/zone
    ...
    - custom_tag_name

Enabling Pods to be detected by Prometheus Autodiscovery

In addition to prometheusScrape to be enabled in the datadog values yaml, the pods needs to have the following annotations. Note that if the application pods are deployed using helm, typically the helm values support a podAnnotations section.

  prometheus.io/path: <specify prometheus endpoint path, e.g., /metrics>
  prometheus.io/port: <SPECIFY promethus endpoint here, e.g., "9090">
  prometheus.io/scrape: "true"

Metadata for metrics collected using the openmetrics check

If using the above configuration, then the openmetrics check is enabled in the agent. See here for more details on what openmetrics check does. Kloudfuse agent (installed using the provided values file) employs a custom check (kf_openmetrics) to collect metadata (the “Description” and “Type” of metrics) for metrics collected using the openmetrics check, which. by default, doesn’t collect any metatadametadata. To enable collection of metadata for these metrics, the sources are required to be annotated which will enable the agent auto-discovery for these pods and execute the custom check.

...