K8S 1.9 + Auto Discovery

config-map.yaml

kind: ConfigMap
apiVersion: v1
metadata:
  name: datadog-config
  namespace: default
data:
  tomcat-autoconf.yaml: |-
    ad_identifiers:
      - tomcat

    instances:
      - host: %%host%%
        port: %%port%%

    init_config:
      is_jmx: true
      collect_default_metrics: true

dd-agent.yaml

apiVersion: extensions/v1beta1
kind: DaemonSet
metadata:
  name: datadog-agent
spec:
  template:
    metadata:
      labels:
        app: datadog-agent
      name: datadog-agent
    spec:
      containers:
      - image: datadog/agent:latest
        imagePullPolicy: Always
        name: datadog-agent
        ports:
          - containerPort: 8125
            name: dogstatsdport
            protocol: UDP
        env:
          - name: DD_API_KEY
            value: <YOUR_API_KEY>
          - name: KUBERNETES
            value: "yes"
          - name: DD_KUBERNETES_KUBELET_HOST
            valueFrom:
              fieldRef:
                fieldPath: status.hostIP
        resources:
          requests:
            memory: "128Mi"
            cpu: "100m"
          limits:
            memory: "512Mi"
            cpu: "250m"
        volumeMounts:
          - name: dockersocket
            mountPath: /var/run/docker.sock
          - name: procdir
            mountPath: /host/proc
            readOnly: true
          - name: cgroups
            mountPath: /host/sys/fs/cgroup
            readOnly: true
          - name: tomcat-config
            mountPath: /conf.d
        livenessProbe:
          exec:
            command:
            - ./probe.sh
          initialDelaySeconds: 15
          periodSeconds: 5
      volumes:
        - hostPath:
            path: /var/run/docker.sock
          name: dockersocket
        - hostPath:
            path: /proc
          name: procdir
        - hostPath:
            path: /sys/fs/cgroup
          name: cgroups
        - name: tomcat-config
          configMap:
            name: datadog-config
            items:
            - key: tomcat-autoconf.yaml
              path: tomcat-autoconf.yaml