Fluentd - Flexible, Stable, Scalable
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Fluentd - a data collector with many plugin support This is a talk about Fluentd at Taipei.py on Feb. 26th 2015.
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Fluentd - Flexible, Stable, Scalable
- 2. ho am I Suiting (@suitingtseng) Gogolook Inc. Data Team
- 3. Before
- 4. What is Fluentd? • Fluentd is an open source data collector, which lets you unify the data collection and consumption for a better use and understanding of data. • Treasure Data: td-agent
- 5. What is Fluentd? • Fluentd is an open source data collector, which lets you unify the data collection and consumption for a better use and understanding of data. • Treasure Data: td-agent
- 6. What is a log?
- 7. Log definition Time + Tag + Content
- 8. After
- 9. How? • Lightweight: C + Ruby + MessagePack • Pluggable architecture • Built-in Reliability
- 10. Input plugins • forward • tail • AWS Simple Queue Service • AWS CloudWatch
- 11. input: tail $ cat /etc/td-‐agent/conf.d <source> type tail path /var/log/nginx/access.log pos_file /var/log/td-‐agent/httpd-‐access.log.pos tag nginx.access </source> <match nginx.access> blah blah </match>
- 12. input: forward $ cat /etc/td-‐agent/conf.d <source> type forward port 24224 </source> <match flask.index> blah blah </match>
- 13. input: forward $ cat ~/example.py from fluent import sender from fluent import event sender.setup('flask', host='localhost', port=24224) event.Event("index", { "user": "foo", "token": "bar", "action": "POST" })
- 14. Output plugins • forward • copy • Elasticsearch / MongoDB • statsd / influxDB / graphite • S3 / GCS / BigQuery
- 15. output: elasticsearch $ cat /etc/td-‐agent/conf.d <source> foo bar tag nginx.access </source> <match nginx.access> type elasticsearch hosts es-‐host1,es-‐host2 index_name nginx type_name access flush_interval 60s </match>
- 16. output: splunk $ cat /etc/td-‐agent/conf.d <source> foo bar tag nginx.access </source> <match nginx.access> type splunk hosts splunk-‐host1 </match>
- 17. Filter plugins • grok • grep • record-modifier / record-reformer • geoip
- 18. Buffer types • Memory • File
- 19. Buffer example $ cat /etc/td-‐agent/conf.d <source> foo bar tag nginx.access </source> <match nginx.access> type splunk hosts splunk-‐host1 buffer_chunk_limit 10m buffer_queue_limit 1000 flush_interval 5m </match>
- 21. Scalability • Scale up: multi-process plugin • Scale out: out-forward plugin
- 22. App + Fluentd Fluentd Elastic search Elastic search Elastic search Elastic search App + Fluentd App + Fluentd
- 23. Fluentd Elastic search Elastic search Elastic search Elastic search Fluentd App + Fluentd App + Fluentd App + Fluentd
- 24. Fluentd Elastic search Elastic search Elastic search Elastic search Fluentd Fluentd Load balance App + Fluentd App + Fluentd App + Fluentd Auto scaling group
- 25. Stability • Auto retry • Persistent file buffer • At-most-once delivery
- 26. Message Delivery • At-most-once: data may be lost • At-least-once: data may be duplicated • Exactly-once: perfect
- 27. Idempotent • HTTP PUT • Maintain a unique id in application level or • Concatenate (instance-id, time, ….) as id
- 28. Gogolook use cases • MongoDB, nginx log • API, worker log • Monitor • Benchmark
- 29. Active users by day
- 30. System monitor
- 31. Queue monitor
- 33. Benchmark? FluentdApp + Fluentd DB Local files
- 34. Benchmark? FluentdApp + Fluentd DB Local files
- 35. Q & A