apiVersion: v1
kind: ConfigMap
metadata:
  name: fluentd-metrics-conf
  labels:
    app: metrics-to-splunk
data:
  fluent.conf: |
    <system>
      log_level debug
    </system>

    <source>
      @type kubernetes_metrics
      tag kube.*
      insecure_ssl true
      node_name "#{ENV['MY_NODE_NAME']}"
    </source>

    <filter kube.**>
      @type record_modifier
      <record>
        metric_name ${tag}
      </record>
    </filter>

    <filter kube.node.**>
      @type record_modifier
      <record>
        source ${record['node']}
      </record>
    </filter>

    <filter kube.pod.**>
      @type record_modifier
      <record>
        source ${record['node']}/${record['pod-name']}
      </record>
    </filter>

    <filter kube.sys-container.**>
      @type record_modifier
      <record>
        source ${record['node']}/${record['pod-name']}/${record['name']}
      </record>
    </filter>

    <filter kube.container.**>
      @type record_modifier
      <record>
        source ${record['node']}/${record['pod-name']}/${record['container-name']}
      </record>
    </filter>

    <match kube.**>
      @type splunk_hec
      protocol https
      hec_host my.splunk.host
      hec_port 8088
      hec_token my.hec.token
      data_type metric
      metric_name_key metric_name
      metric_value_key value
      host "#{ENV['MY_NODE_NAME']}"
      source_key source
      insecure_ssl true
      interval 15s
      <buffer>
        @type memory
        total_limit_size 100m
        chunk_limit_size 10m
        flush_interval 15s
        flush_thread_count 1
        overflow_action block
        retry_max_times 3
      </buffer>
    </match>

---
apiVersion: extensions/v1beta1
kind: DaemonSet
metadata:
  name: metrics-to-splunk
  labels:
    app: metrics-to-splunk
    engine: fluentd
spec:
  template:
    metadata:
      labels:
        app: metrics-to-splunk
        engine: fluentd
      annotations:
    spec:
      containers:
      - name: fluentd
        image: splunk/connect-for-kubernetes:v1.0.0-beta
        imagePullPolicy: Never
        env:
          - name: MY_NODE_NAME
            valueFrom:
              fieldRef:
                fieldPath: spec.nodeName
        resources:
          requests:
            cpu: 200m
            memory: 200Mi
        volumeMounts:
        - name: conf-configmap
          mountPath: /fluentd/etc
      volumes:
      - name: conf-configmap
        configMap:
          name: fluentd-metrics-conf