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Fluentd Log Collector For Kubernetes

This image captures logs from Docker containers,
enriches with Kubernetes metadata & pushes to the
specified Elasticsearch service deployed in your
Kubernetes environment.

You can configure behaviour via the following environment
variables:

  • ELASTICSEARCH_HOST - the Elasticsearh host name to send data to
    (default: es-logging.default.svc)
  • ELASTICSEARCH_PORT - the Elasticsearh port to send data to
    (default: 9200)
  • ELASTICSEARCH_SCHEME - http or https (default: http)
  • ELASTICSEARCH_USER - user to connect with
  • ELASTICSEARCH_PASSWORD - password to connect with
  • ELASTICSEARCH_DYNAMIC - whether elasticsearch plugin configuration is
    dymamic, e.g. to select index name prefix based on the namespace field
    (default: false)
  • FLUENTD_FLUSH_INTERVAL - how often to flush fluentd data
    (default: 10s)
  • FLUENTD_FLUSH_THREADS - number of threads to use to flush
    logs (default: 1)
  • FLUENTD_RETRY_LIMIT - number of retries on flush failures
    (default: 10)
  • FLUENTD_DISABLE_RETRY_LIMIT - disable retry limit (default: true)
  • FLUENTD_RETRY_WAIT - time to wait between retries (default:
    1s)
  • FLUENTD_MAX_RETRY_WAIT - maximum time to wait between retries (default:
    60s)
  • FLUENTD_BUFFER_CHUNK_LIMIT - max buffer chunk size (default:
    8m)
  • FLUENTD_BUFFER_QUEUE_LIMIT - max buffer queue size (default:
    8192)
  • FLUENTD_BUFFER_TYPE - buffer type: memory or file
    (default: memory)
  • FLUENTD_BUFFER_PATH - buffer file path if using a file
    buffer (default: /var/fluentd/buffer)
  • FLUENTD_LOGSTASH_FORMAT - use logstash format for index names (default true)
  • FLUENTD_LOGSTASH_PREFIX - the prefix to use for index names in logstash
    format (default logstash)
  • KUBERNETES_PRESERVE_JSON_LOG - whether to preserve raw JSON logs in the
    log field (default: true)
  • KUBERNETES_URL - provide the URL of the Kubernetes master (default: https://kubernetes.default.svc)
  • KUBERNETES_VERIFY_SSL - validate the Kubernetes SSL certificate (default: true)

For more information on Fluentd buffer plugins & options, see
http://docs.fluentd.org/articles/buffer-plugin-overview.

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