KubeZero/charts/kubezero-logging/values.yaml

# use this for backwards compatability
# fullnameOverride: ""

# Version for ElasticSearch and Kibana have to match so we define it at top-level
version: 7.8.1

elastic_password: "" # super_secret_elastic_password

es:
  nodeSets: []
  #- count: 2
  #  storage:
  #    size: 16Gi
  #    class: local-sc-xfs
  #  zone: us-west-2a
  s3Snapshot:
    enabled: false
    iamrole: "" # INSERT_CLOUDFORMATION_OUTPUT_ElasticSearchSnapshots

  prometheus: false

kibana:
  count: 1
  #servicename: kibana.example.com
  istio:
    enabled: false
    gateway: "istio-system/ingressgateway"
    url: "" # kibana.example.com

fluentd:
  enabled: false
  image:
    repository: quay.io/fluentd_elasticsearch/fluentd
    tag: v2.9.0
  istio:
    enabled: false

  # broken as of 2.5.1 ;-(
  # useStatefulSet: true
  replicaCount: 2

  plugins:
    enabled: false
    pluginsList:
    #- fluent-plugin-detect-exceptions
    #- fluent-plugin-s3
    #- fluent-plugin-grok-parser

  #persistence:
  #  enabled: true
  #  storageClass: "ebs-sc-gp2-xfs"
  #  accessMode: ReadWriteOnce
  #  size: 4Gi

  service:
    ports:
    - name: tcp-forward
      protocol: TCP
      containerPort: 24224
    - name: http-fluentd
      protocol: TCP
      containerPort: 9880

  metrics:
    enabled: false
    serviceMonitor:
      enabled: true
      additionalLabels:
        release: metrics
      namespace: monitoring

  output:
    # Default should be "logging-kubezero-logging-es-http" if fullnameOverride is NOT used
    host: logging-es-http

  shared_key: "cloudbender"

  env:
    OUTPUT_USER: elastic
    OUTPUT_SSL_VERIFY: "false"

  # Same here the secret names change if fullnameOverride is not used !!
  extraEnvVars:
  - name: OUTPUT_PASSWORD
    valueFrom:
      secretKeyRef:
        name: logging-es-elastic-user
        key: elastic
  - name: FLUENTD_SHARED_KEY
    valueFrom:
      secretKeyRef:
        name: logging-fluentd-secret
        key: shared_key

  configMaps:
    general.conf: |
      <label @FLUENT_LOG>
        <match **>
          @type null
        </match>
      </label>
      <source>
        @type http
        port 9880
        bind 0.0.0.0
        keepalive_timeout 30
      </source>
      <source>
        @type monitor_agent
        bind 0.0.0.0
        port 24220
        tag fluentd.monitor.metrics
      </source>

    forward-input.conf: |
      <source>
        @type forward
        port 24224
        bind 0.0.0.0
        skip_invalid_event true
        send_keepalive_packet true
        <security>
          self_hostname "#{ENV['HOSTNAME']}"
          shared_key "#{ENV['FLUENTD_SHARED_KEY']}"
        </security>
      </source>

    output.conf: |
      <match **>
        @id elasticsearch
        @type elasticsearch
        @log_level info
        include_tag_key true
        id_key id
        remove_keys id

        # KubeZero pipeline incl. GeoIP etc.
        # pipeline fluentd

        host "#{ENV['OUTPUT_HOST']}"
        port "#{ENV['OUTPUT_PORT']}"
        scheme "#{ENV['OUTPUT_SCHEME']}"
        ssl_version "#{ENV['OUTPUT_SSL_VERSION']}"
        ssl_verify "#{ENV['OUTPUT_SSL_VERIFY']}"
        user "#{ENV['OUTPUT_USER']}"
        password "#{ENV['OUTPUT_PASSWORD']}"

        log_es_400_reason
        logstash_format true
        reconnect_on_error true
        # reload_on_failure true
        request_timeout 15s
        suppress_type_name true

        <buffer tag>
          @type file_single
          path /var/log/fluentd-buffers/kubernetes.system.buffer
          flush_mode interval
          flush_thread_count 2
          flush_interval 30s
          flush_at_shutdown true
          retry_type exponential_backoff
          retry_timeout 60m
          overflow_action drop_oldest_chunk
        </buffer>
      </match>

    filter.conf: |
      <filter disabled.kube.**>
        @type parser
        key_name message
        remove_key_name_field true
        reserve_data true
        reserve_time true
        # inject_key_prefix message_json.
        emit_invalid_record_to_error false
        <parse>
          @type json
        </parse>
      </filter>

fluent-bit:
  enabled: false
  test:
    enabled: false

  config:
    outputs: |
      [OUTPUT]
          Match *
          Name forward
          Host logging-fluentd
          Port 24224
          Shared_Key cloudbender
          Send_options true
          Require_ack_response true

    customParsers: |
      [PARSER]
          Name cri-log
          Format regex
          Regex ^(?<time>[^ ]+) (?<stream>stdout|stderr) (?<logtag>[^ ]*) (?<log>.*)$
          Time_Key    time
          Time_Format %Y-%m-%dT%H:%M:%S.%L%z

    inputs: |
      [INPUT]
          Name tail
          Path /var/log/containers/*.log
          Parser cri-log
          Tag cri.*
          Mem_Buf_Limit 16MB
          Skip_Long_Lines On
          Refresh_Interval 10
          DB /var/log/flb_kube.db
          DB.Sync Normal

    filters: |
      [FILTER]
          Name    lua
          Match   cri.*
          script  /fluent-bit/etc/functions.lua
          call    reassemble_cri_logs

      [FILTER]
          Name kubernetes
          Match cri.*
          Merge_Log On
          Merge_Log_Key kube
          Kube_Tag_Prefix cri.var.log.containers.
          Keep_Log Off
          K8S-Logging.Parser Off
          K8S-Logging.Exclude Off

      [FILTER]
          Name rewrite_tag
          Match cri.*
          Emitter_Name kube_tag_rewriter
          Rule logtag F kube.$kubernetes['namespace_name'].$kubernetes['container_name'] false

      [FILTER]
          Name    lua
          Match   kube.*
          script  /fluent-bit/etc/functions.lua
          call    nest_k8s_ns
`
    service: |
      [SERVICE]
          Flush 1
          Daemon Off
          Log_Level warn
          Parsers_File parsers.conf
          Parsers_File custom_parsers.conf
          HTTP_Server On
          HTTP_Listen 0.0.0.0
          HTTP_Port 2020

    lua: |
      local reassemble_state = {}

      function reassemble_cri_logs(tag, timestamp, record)
         local reassemble_key = tag
         if record.logtag == 'P' then
            reassemble_state[reassemble_key] = reassemble_state[reassemble_key] or "" .. record.log
            return -1, 0, 0
         end
         record.log = reassemble_state[reassemble_key] or "" .. (record.log or "")
         reassemble_state[reassemble_key] = nil
         return 1, timestamp, record
      end

      function nest_k8s_ns(tag, timestamp, record)
          if not record['kubernetes']['namespace_name'] then
              return 0, 0, 0
          end
          new_record = {}
          for key, val in pairs(record) do
              if key == 'kube' then
                  new_record[key] = {}
                  new_record[key][record['kubernetes']['namespace_name']] = record[key]
              else
                  new_record[key] = record[key]
              end
          end
          return 1, timestamp, new_record
      end

  serviceMonitor:
    enabled: true
    namespace: monitoring
    selector:
      release: metrics

  tolerations:
  - key: node-role.kubernetes.io/master
    effect: NoSchedule