configmap.yaml

kind: ConfigMap
apiVersion: v1
metadata:
  name: dd-agent-config
  namespace: myproject
data:
  kubernetes.yaml: |-
    init_config:
      min_collection_interval: 300
    instances:
        - port: 0
          method: https
          kubelet_tls_verify: False

dd-agent-daemonset.yaml

apiVersion: extensions/v1beta1
kind: DaemonSet
metadata:
  name: datadog-agent
spec:
  template:
    metadata:
      labels:
        app: datadog-agent
      name: datadog-agent
    spec:
      serviceAccountName: datadog-agent
      nodeSelector:
        label: local
      containers:
      - image: datadog/docker-dd-agent:latest
        imagePullPolicy: Always
        name: datadog-agent
        ports:
          - containerPort: 8125
            name: dogstatsdport
            protocol: UDP
          - containerPort: 8126
            name: traceport
            protocol: TCP
        securityContext:
          privileged: true
        env:
          - name: DD_API_KEY
            value: XXX
          - name: DD_COLLECT_KUBERNETES_EVENTS
            value: "true"
          - name: DD_LEADER_ELECTION
            value: "true"
          - name: KUBERNETES
            value: "yes"
          - name: DD_KUBERNETES_KUBELET_HOST
            valueFrom:
              fieldRef:
                fieldPath: spec.nodeName
        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
          - mountPath: /etc/dd-agent/conf.d/kubernetes.yaml.example
            name: dd-agent-config
            subPath: kubernetes.yaml
        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
        - configMap:
            name: dd-agent-config
          name: dd-agent-config

start-cluster.sh

#!/bin/bash

./oc cluster up --image=registry.access.redhat.com/openshift3/ose --version=v3.5
./oc login -u system:admin
# you need to run ./oc get nodes to get the ip address of your local node and use it here
./oc label node 192.168.65.3 label=local
./oc create serviceaccount datadog-agent
./oc adm policy add-scc-to-user privileged system:serviceaccount:myproject:datadog-agent
./oc create -f configmap.yaml
./oc create -f dd-agent-daemonset.yaml

Instructions

1. Download the oc 1.5 client and extract 'oc' to same dir as these files.

2. Bring a cluster up on Openshift 3.5:

   oc cluster up --image=registry.access.redhat.com/openshift3/ose --version=v3.5

3. Login as Admin:

   oc login -u system:admin

4. Label the node

   oc get nodes
oc label node 192.168.65.3 label=local

5. Create a serviceaccount

   oc create serviceaccount datadog-agent

6. Add permissive policy to serviceaccount

   oc adm policy add-scc-to-user privileged system:serviceaccount:myproject:datadog-agent

7. Create the config-map

   oc create -f configmap.yaml

8. Run Daemonset (as service account, with label selector and as a privileged pod)

   oc create -f dd-agent-daemonset.yaml