Fluentd v1.0 in a nutshell
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This document summarizes Fluentd v1.0 and provides details about its new features and release plan. It notes that Fluentd v1.0 will provide stable APIs and compatibility with previous versions while improving plugin APIs, adding Windows and multicore support, and increasing event time resolution to nanoseconds. The release is planned for Q3 2017 to allow feedback on v0.14 before finalizing v1.0 features.
![Buffer keys and placeholders
• Dynamic parameters for table name, object path and more
• We can embed time, tag and any field with placeholder
<match s3.**>
@type s3
aws_key_id "#{ENV['AWS_ACCESS_KEY']}"
aws_sec_key "#{ENV['AWS_SECRETA_KEY']}"
s3_bucket fluent-plugin-s3
path test/%Y/%m/${tag}/${key}/
<buffer time,tag,key>
timekey 3600
</buffer>
</match>
http://docs.fluentd.org/v0.14/articles/buffer-section for more details
time: 2017-06-01 12:00:00 +0700
tag: “test”
record: {“key”:”hello”}
- Event sample
test/2017/6/test/hello/
- Generated “path”](https://image.slidesharecdn.com/fluentd-v1-at-oss-summit-170601065656/85/Fluentd-v1-0-in-a-nutshell-8-320.jpg)
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Fluentd v1.0 in a nutshell
- 1. Fluentd v1.0 in a nutshell June 1, 2017 Masahiro Nakagawa
- 2. Fluentd v0.12 • Current stable and widely used on production • Input, Parser, Filter, Formatter, Buffer, Output plugins • Known issues • Event time is second unit • No Windows support • No multi core support • Need to improve plugin API to support more various use cases
- 3. • Development version of v1 • Latest version is v0.14.17: March 30, 2017 • Implemented New features • New Plugin APIs • Event Time with Nanosecond resolution • ServerEngine based Supervisor • Windows support • Multicore support • New Plugin Helpers & Plugin Storage Fluentd v0.14
- 4. Fluentd v1 • Stable announcement for APIs / features • No breaking API changes in v1.x • Compatible with v0.12 and v0.14 • exclude v0 config syntax and detach_process • Release plan • Q3, 2017 • Need v0.14 feedback from developers and users https://hub.docker.com/r/fluent/fluentd/
- 5. New Plugin APIs • Input/Output plugin APIs w/ well-controlled lifecycle • stop, shutdown, close, terminate • Integrate all output plugin into Fluent::Plugin::Output • New Buffer API for delayed commit and flexible chunking with metadata • parallel/async "commit" operation for chunks • For high latency case: forward’s at-least-once, issuing job, etc… • Users can choose chunk keys by configuration for dynamic parameters • Compatible w/ v0.12 plugins • compatibility layer for traditional APIs • it will be supported between v1.x versions
- 6. Router buffer_chunk_limit enqueue: exceed flush_interval or buffer_chunk_limit Key pattern: - BufferedOutput empty string or specified key -ObjectBufferedOutput tag -TimeSlicedOutput time slice emit emit Buffer Queue buffer_queue_limit Output OutputInput / Filter Tag Time Record Chunk Chunk Chunk Chunk Chunk key:foo key:bar key:baz v0.12 buffer design
- 8. Buffer keys and placeholders • Dynamic parameters for table name, object path and more • We can embed time, tag and any field with placeholder <match s3.**> @type s3 aws_key_id "#{ENV['AWS_ACCESS_KEY']}" aws_sec_key "#{ENV['AWS_SECRETA_KEY']}" s3_bucket fluent-plugin-s3 path test/%Y/%m/${tag}/${key}/ <buffer time,tag,key> timekey 3600 </buffer> </match> http://docs.fluentd.org/v0.14/articles/buffer-section for more details time: 2017-06-01 12:00:00 +0700 tag: “test” record: {“key”:”hello”} - Event sample test/2017/6/test/hello/ - Generated “path”
- 9. Time with nanosecond • For sub-second systems: Elasticsearch, InfluxData, etc… • Fluent::EventTime • behaves as Integer for v0.12’s second unit compatibility • has methods to get sub-second resolution • be serialized into msgpack using Ext type • Fluent::Engine.now now returns EventTime, not Integer • Fluentd core can handle both of Integer and EventTime as time • compatible with older versions and software in eco-system (e.g., fluent-logger, Docker logging driver)
- 10. ServerEngine based Supervisor • ServerEngine is a framework for building robust server • https://github.com/treasure-data/serverengine • Replacing supervisor process with ServerEngine • it has SocketManager to share listening sockets between 2 or more worker processes • Replacing Fluentd's processing model from fork to spawn • to support Windows environment
- 11. Windows support • Fluentd and core plugins work on Windows • Windows service registration is also supported • http://docs.fluentd.org/v0.14/articles/install-by-msi • Use HTTP RPC instead of signals • https://github.com/fluent/fluent-plugin-windows-eventlog • We can collect windows eventlog :)
- 12. Symmetric multi core processing • 2 or more workers share a configuration file • and share listening sockets via PluginHelper • under a supervisor process (ServerEngine) • Multi core scalability for huge traffic • one input plugin for a tcp port, some filters and one (or some) output plugin • buffer paths are managed automatically by Fluentd. Need root_dir and @id parameters
- 13. Worker0 Supervisor v0.14’s multi process feature grep forward tdlog Worker1 Worker2 grep forward tdlog grep forward tdlog socket
- 14. Configuration example <system> workers 2 root_dir /var/log/fluentd </system> <source> @type forward </source> <filter pattern> @type grep </filter> <match pattern> @type tdlog @id out_td </match> /var/log/fluentd/worker0/out_td/buffer/buffer.xxx.log /var/log/fluentd/worker0/out_td/buffer/buffer.xxx.log.meta - buf_file’s path is automatically generated worker id root_dir plugin’s @id
- 15. TLS/Authn/Authz support for forward plugin • Support v1 forward protocol spec • secure-forward is merged into built-in forward • TLS w/ at-least-one semantics • Simple authentication/authorization w/o SSL • Different points • secure-forward uses keep-alive, but forward doesn’t • secure-forward uses thread per connection, but forward uses cool.io, libev based IO. http://www.fluentd.org/blog/fluentd-v0.14.12-has-been-released
- 16. Plugin Storage & Helpers • Plugin Storage: new plugin type for plugins • provides key-value storage to persistent intermediate status • built-in plugins: in-memory, local file • pluggable: 3rd party plugin to store data into storage • storage-redis • Plugin Helpers: • collections of utility methods for plugins • fully integrated with test drivers to run test code after setup phase of helpers (e.g. test started after created threads)
- 17. server helper: before def start @loop = Coolio::Loop.new @handler = Coolio::TCPServer.new(@bind, @port, SocketUtil::TcpHandler, log, @delimiter, method(:on_message)) @loop.attach(@handler) @thread = Thread.new(&method(:run)) end def shutdown @loop.watchers.each { |w| w.detach } @loop.stop @handler.close @thread.join end def run @loop.run rescue => e log.error "unexpected error", error: e log.error_backtrace end def on_message(msg, addr) # body end
- 18. server helper: after def start server_create(:foo_server, @port, bind: @bind) do |data, conn| # body end end
- 19. v0.12 plugins ParserInput Buffer Output FormatterFilter “output-ish”“input-ish”
- 20. v0.14 plugins ParserInput Buffer Output FormatterFilter “output-ish”“input-ish” Storage Helper
- 21. Other helpers • Timer: one-shot / periodic timer • Event Loop: Low-layer event loop • Socket: TCP/UDP/TLS support • Formatter/Parser: Manage parser/formatter plugins • Chile Process: Manage process for exec like plugin • etc…
- 22. Is v0.14 stable? • Not yet but it will be stable in this month (I hope!) • Remaining tickets: • Nested record support • Fix core bugs • v0.14 stable means ready for production, not feature freeze. Feature freeze is done by v1 release
- 23. TODO list for v1 • Counter API to store metrics between processes • https://github.com/fluent/fluentd/tree/counter-api • Optimize performance and remove deprecated code • Migrate more plugin into v0.14 API • Core plugins are migrated • Popular plugins release beta version for v0.14 • Write document: design, plugin, operation, etc…
- 24. Treasure Agent 3.0 serise (td-agent 3) • fluentd v0.14/v1, Ruby 2.4, and latest core components • Latest beta version is 3.0.1: May 19, 2017 • Environments • Add msi Windows package • Remove CentOS 5, Ubuntu 10.04 support • Beta packages have beed released • http://docs.fluentd.org/v0.14/categories/installation • beta will be removed after v0.14 becomes stable :)