CoreDNS

Docker

To configure this check for an Agent running on a container:

Metric collection

Set Autodiscovery Integration Templates as Docker labels on your application container:

LABEL "com.datadoghq.ad.check_names"='["coredns"]'
LABEL "com.datadoghq.ad.init_configs"='[{}]'
LABEL "com.datadoghq.ad.instances"='[{"openmetrics_endpoint":"http://%%host%%:9153/metrics", "tags":["dns-pod:%%host%%"]}]'

To enable the legacy OpenMetricsBaseCheckV1 version of the check, replace openmetrics_endpoint with prometheus_url:

LABEL "com.datadoghq.ad.instances"='[{"prometheus_url":"http://%%host%%:9153/metrics", "tags":["dns-pod:%%host%%"]}]' 

Notes:

• The shipped coredns.d/auto_conf.yaml file enables the legacy OpenMetricsBaseCheckV1 option, prometheus_url, by default.
• The dns-pod tag keeps track of the target DNS pod IP. The other tags are related to the dd-agent that is polling the information using the service discovery.
• The service discovery annotations need to be done on the pod. In case of a deployment, add the annotations to the metadata of the template’s specifications. Do not add it at the outer specification level.

Log collection

Collecting logs is disabled by default in the Datadog Agent. To enable it, see Docker Log Collection.

Then, set Log Integrations as Docker labels:

LABEL "com.datadoghq.ad.logs"='[{"source":"coredns","service":"<SERVICE_NAME>"}]'

Kubernetes

To configure this check for an Agent running on Kubernetes:

Metric collection

Set Autodiscovery Integrations Templates as pod annotations on your application container. Alternatively, you can configure templates with a file, configmap, or key-value store.

apiVersion: v1
kind: Pod
metadata:
  name: coredns
  annotations:
    ad.datadoghq.com/coredns.check_names: '["coredns"]'
    ad.datadoghq.com/coredns.init_configs: '[{}]'
    ad.datadoghq.com/coredns.instances: |
      [
        {
          "openmetrics_endpoint": "http://%%host%%:9153/metrics", 
          "tags": ["dns-pod:%%host%%"]
        }
      ]      
  labels:
    name: coredns
spec:
  containers:
    - name: coredns

To enable the legacy OpenMetricsBaseCheckV1 version of the check, replace openmetrics_endpoint with prometheus_url:

    ad.datadoghq.com/coredns.instances: |
      [
        {
          "prometheus_url": "http://%%host%%:9153/metrics", 
          "tags": ["dns-pod:%%host%%"]
        }
      ]      

Notes:

• The shipped coredns.d/auto_conf.yaml file enables the legacy OpenMetricsBaseCheckV1 option, prometheus_url, by default.
• The dns-pod tag keeps track of the target DNS pod IP. The other tags are related to the Datadog Agent that is polling the information using the service discovery.
• The service discovery annotations need to be done on the pod. In case of a deployment, add the annotations to the metadata of the template’s specifications. Do not add it at the outer specification level.

Log collection

Collecting logs is disabled by default in the Datadog Agent. To enable it, see Kubernetes Log Collection.

Then, set Log Integrations as pod annotations. Alternatively, you can configure this with a file, configmap, or key-value store.

apiVersion: v1
kind: Pod
metadata:
  name: coredns
  annotations:
    ad.datadoghq.com/coredns.logs: '[{"source": "coredns", "service": "<SERVICE_NAME>"}]'
  labels:
    name: coredns

ECS

To configure this check for an Agent running on ECS:

Metric collection

Set Autodiscovery Integrations Templates as Docker labels on your application container:

{
  "containerDefinitions": [{
    "name": "coredns",
    "image": "coredns:latest",
    "dockerLabels": {
      "com.datadoghq.ad.check_names": "[\"coredns\"]",
      "com.datadoghq.ad.init_configs": "[{}]",
      "com.datadoghq.ad.instances": "[{\"openmetrics_endpoint\":\"http://%%host%%:9153/metrics\", \"tags\":[\"dns-pod:%%host%%\"]}]"
    }
  }]
}

To enable the legacy OpenMetricsBaseCheckV1 version of the check, replace openmetrics_endpoint with prometheus_url:

      "com.datadoghq.ad.instances": "[{\"prometheus_url\":\"http://%%host%%:9153/metrics\", \"tags\":[\"dns-pod:%%host%%\"]}]"

Notes:

• The shipped coredns.d/auto_conf.yaml file enables the legacy OpenMetricsBaseCheckV1 option, prometheus_url, by default.
• The dns-pod tag keeps track of the target DNS pod IP. The other tags are related to the Datadog Agent that is polling the information using the service discovery.
• The service discovery annotations need to be done on the pod. In case of a deployment, add the annotations to the metadata of the template’s specifications. Do not add it at the outer specification level.

Log collection

Collecting logs is disabled by default in the Datadog Agent. To enable it, see ECS Log Collection.

Then, set Log Integrations as Docker labels:

{
  "containerDefinitions": [{
    "name": "coredns",
    "image": "coredns:latest",
    "dockerLabels": {
      "com.datadoghq.ad.logs": "[{\"source\":\"coredns\",\"service\":\"<SERVICE_NAME>\"}]"
    }
  }]
}