kind: ConfigMap
apiVersion: v1
metadata:
  name: google-fluentd-cm
  namespace: kube-system
  labels:
    k8s-app: google-fluentd
data:
  fluent.conf: |-
    <match **>
      @type google_cloud
      @id out_google_cloud

      # Set the buffer type to file to improve the reliability and reduce the memory consumption
      buffer_type file
      buffer_path /var/log/fluentd-buffers/stackdriver.buffer
      # Set queue_full action to block because we want to pause gracefully
      # in case of the off-the-limits load instead of throwing an exception
      buffer_queue_full_action block
      # Set the chunk limit conservatively to avoid exceeding the GCL limit
      # of 10MiB per write request.
      buffer_chunk_limit 2M
      # Cap the combined memory usage of this buffer and the one below to
      # 2MiB/chunk * (6 + 2) chunks = 16 MiB
      buffer_queue_limit 6
      # Never wait more than 5 seconds before flushing logs in the non-error case.
      flush_interval 5s
      # Never wait longer than 30 seconds between retries.
      max_retry_wait 30
      # Disable the limit on the number of retries (retry forever).
      # disable_retry_limit
      # Use multiple threads for processing.
      num_threads 2
    </match>
  kubernetes.conf: |-
    <match fluent.**>
      @type null
    </match>

    <source>
      @type tail
      @id in_tail_container_logs
      path /var/log/containers/*.log
      pos_file /var/log/fluentd-containers.log.pos
      tag "#{ENV['FLUENT_CONTAINER_TAIL_TAG'] || 'kubernetes.*'}"
      read_from_head true
      <parse>
        @type "#{ENV['FLUENT_CONTAINER_TAIL_PARSER_TYPE'] || 'json'}"
        time_format %Y-%m-%dT%H:%M:%S.%NZ
      </parse>
    </source>

    <source>
      @type tail
      @id in_tail_minion
      path /var/log/salt/minion
      pos_file /var/log/fluentd-salt.pos
      tag salt
      <parse>
        @type regexp
        expression /^(?<time>[^ ]* [^ ,]*)[^\[]*\[[^\]]*\]\[(?<severity>[^ \]]*) *\] (?<message>.*)$/
        time_format %Y-%m-%d %H:%M:%S
      </parse>
    </source>

    <source>
      @type tail
      @id in_tail_startupscript
      path /var/log/startupscript.log
      pos_file /var/log/fluentd-startupscript.log.pos
      tag startupscript
      <parse>
        @type syslog
      </parse>
    </source>

    <source>
      @type tail
      @id in_tail_docker
      path /var/log/docker.log
      pos_file /var/log/fluentd-docker.log.pos
      tag docker
      <parse>
        @type regexp
        expression /^time="(?<time>[^)]*)" level=(?<severity>[^ ]*) msg="(?<message>[^"]*)"( err="(?<error>[^"]*)")?( statusCode=($<status_code>\d+))?/
      </parse>
    </source>

    <source>
      @type tail
      @id in_tail_etcd
      path /var/log/etcd.log
      pos_file /var/log/fluentd-etcd.log.pos
      tag etcd
      <parse>
        @type none
      </parse>
    </source>

    <source>
      @type tail
      @id in_tail_kubelet
      multiline_flush_interval 5s
      path /var/log/kubelet.log
      pos_file /var/log/fluentd-kubelet.log.pos
      tag kubelet
      <parse>
        @type kubernetes
      </parse>
    </source>

    <source>
      @type tail
      @id in_tail_kube_proxy
      multiline_flush_interval 5s
      path /var/log/kube-proxy.log
      pos_file /var/log/fluentd-kube-proxy.log.pos
      tag kube-proxy
      <parse>
        @type kubernetes
      </parse>
    </source>

    <source>
      @type tail
      @id in_tail_kube_apiserver
      multiline_flush_interval 5s
      path /var/log/kube-apiserver.log
      pos_file /var/log/fluentd-kube-apiserver.log.pos
      tag kube-apiserver
      <parse>
        @type kubernetes
      </parse>
    </source>

    <source>
      @type tail
      @id in_tail_kube_controller_manager
      multiline_flush_interval 5s
      path /var/log/kube-controller-manager.log
      pos_file /var/log/fluentd-kube-controller-manager.log.pos
      tag kube-controller-manager
      <parse>
        @type kubernetes
      </parse>
    </source>

    <source>
      @type tail
      @id in_tail_kube_scheduler
      multiline_flush_interval 5s
      path /var/log/kube-scheduler.log
      pos_file /var/log/fluentd-kube-scheduler.log.pos
      tag kube-scheduler
      <parse>
        @type kubernetes
      </parse>
    </source>

    <source>
      @type tail
      @id in_tail_rescheduler
      multiline_flush_interval 5s
      path /var/log/rescheduler.log
      pos_file /var/log/fluentd-rescheduler.log.pos
      tag rescheduler
      <parse>
        @type kubernetes
      </parse>
    </source>

    <source>
      @type tail
      @id in_tail_glbc
      multiline_flush_interval 5s
      path /var/log/glbc.log
      pos_file /var/log/fluentd-glbc.log.pos
      tag glbc
      <parse>
        @type kubernetes
      </parse>
    </source>

    <source>
      @type tail
      @id in_tail_cluster_autoscaler
      multiline_flush_interval 5s
      path /var/log/cluster-autoscaler.log
      pos_file /var/log/fluentd-cluster-autoscaler.log.pos
      tag cluster-autoscaler
      <parse>
        @type kubernetes
      </parse>
    </source>

    # Example:
    # 2017-02-09T00:15:57.992775796Z AUDIT: id="90c73c7c-97d6-4b65-9461-f94606ff825f" ip="104.132.1.72" method="GET" user="kubecfg" as="<self>" asgroups="<lookup>" namespace="default" uri="/api/v1/namespaces/default/pods"
    # 2017-02-09T00:15:57.993528822Z AUDIT: id="90c73c7c-97d6-4b65-9461-f94606ff825f" response="200"
    <source>
      @type tail
      @id in_tail_kube_apiserver_audit
      multiline_flush_interval 5s
      path /var/log/kubernetes/kube-apiserver-audit.log
      pos_file /var/log/kube-apiserver-audit.log.pos
      tag kube-apiserver-audit
      <parse>
        @type multiline
        format_firstline /^\S+\s+AUDIT:/
        # Fields must be explicitly captured by name to be parsed into the record.
        # Fields may not always be present, and order may change, so this just looks
        # for a list of key="\"quoted\" value" pairs separated by spaces.
        # Unknown fields are ignored.
        # Note: We can't separate query/response lines as format1/format2 because
        #       they don't always come one after the other for a given query.
        format1 /^(?<time>\S+) AUDIT:(?: (?:id="(?<id>(?:[^"\\]|\\.)*)"|ip="(?<ip>(?:[^"\\]|\\.)*)"|method="(?<method>(?:[^"\\]|\\.)*)"|user="(?<user>(?:[^"\\]|\\.)*)"|groups="(?<groups>(?:[^"\\]|\\.)*)"|as="(?<as>(?:[^"\\]|\\.)*)"|asgroups="(?<asgroups>(?:[^"\\]|\\.)*)"|namespace="(?<namespace>(?:[^"\\]|\\.)*)"|uri="(?<uri>(?:[^"\\]|\\.)*)"|response="(?<response>(?:[^"\\]|\\.)*)"|\w+="(?:[^"\\]|\\.)*"))*/
        time_format %Y-%m-%dT%T.%L%Z
      </parse>
    </source>

    <filter kubernetes.**>
      @type kubernetes_metadata
      @id filter_kube_metadata
      kubernetes_url "#{ENV['FLUENT_FILTER_KUBERNETES_URL'] || 'https://' + ENV.fetch('KUBERNETES_SERVICE_HOST') + ':' + ENV.fetch('KUBERNETES_SERVICE_PORT') + '/api'}"
      verify_ssl "#{ENV['KUBERNETES_VERIFY_SSL'] || true}"
      ca_file "#{ENV['KUBERNETES_CA_FILE']}"
    </filter>
  prometheus.conf: |-
    # Prometheus metric exposed on 0.0.0.0:24231/metrics
    <source>
      @type prometheus
      bind "#{ENV['FLUENTD_PROMETHEUS_BIND'] || '0.0.0.0'}"
      port "#{ENV['FLUENTD_PROMETHEUS_PORT'] || '24231'}"
      metrics_path "#{ENV['FLUENTD_PROMETHEUS_PATH'] || '/metrics'}"
    </source>

    <source>
      @type prometheus_output_monitor
    </source>
  systemd.conf: |-
    # Logs from systemd-journal for interesting services.
    <source>
      @type systemd
      @id in_systemd_kubelet
      matches [{ "_SYSTEMD_UNIT": "kubelet.service" }]
      <storage>
        @type local
        persistent true
        path /var/log/fluentd-journald-kubelet-cursor.json
      </storage>
      read_from_head true
      tag kubelet
    </source>

    # Logs from docker-systemd
    <source>
      @type systemd
      @id in_systemd_docker
      matches [{ "_SYSTEMD_UNIT": "docker.service" }]
      <storage>
        @type local
        persistent true
        path /var/log/fluentd-journald-docker-cursor.json
      </storage>
      read_from_head true
      tag docker.systemd
    </source>

    # Logs from systemd-journal for interesting services.
    <source>
      @type systemd
      @id in_systemd_bootkube
      matches [{ "_SYSTEMD_UNIT": "bootkube.service" }]
      <storage>
        @type local
        persistent true
        path /var/log/fluentd-journald-bootkube-cursor.json
      </storage>
      read_from_head true
      tag bootkube
    </source>
