KNOWLEDGE BASE
Release Notes v4.2.2
Fluent Bit is a Fast and Lightweight Data Processor and Forwarder for Linux, BSD, Windows and macOS. We are proud to announce the availability of Fluent Bit v4.2.2.
Below is a detailed list of changes included in this release…
What’s new ?
Fluent Bit v4.2.2 is a maintenance release featuring improved IPv6 address support, AWS simple_aggregation operation for Kinesis Firehose and Kinesis Streams, increased CloudWatch Logs event length limit to 1MB, and multiple library upgrades including SQLite, c-ares, monkey, cmetrics, and LuaJIT. This is the final release of 2025, happy holidays :) .
Core
- http_client: add ipv6 bracket if missing from host address (PR #11181)
- network: Add ws2tcpip.h to avoid missing func defs (PR #11181)
- utils: fix support for ipv6 addresses (PR #11181)t/fluent-bit/pull/11258))
- aws
Libraries
- sqlite: upgrade to v3.51.1 (PR #11309)
- c-ares: upgrade to v1.34.6 (PR #11309)
- monkey: upgrade to v1.8.6 (PR #11309)
- cmetrics: upgrade to v1.0.6 (PR #11309)
- luajit: upgrade to 7152e154 (20251223) (PR #11309)
Plugins
- Cloudwatch_logs (Output)
- increase MAX_EVENT_LEN to 1MB with tests (PR #11159)
- Kinesis_firehose (Output)
- Kinesis_streams (Output)
- Add simple_aggregation operation (PR #11284)
Contributors
On every release, there are many people involved doing contributions to different areas like bug reporting, troubleshooting, documentation and coding, without these contributions from the community, the project won’t be the same and won’t be in the good shape that it is now. So THANK YOU! to everyone who takes part of this journey!
Join us
We want to hear about you, our community is growing, and you can be part of it!, you can contact us at:
- Github: http://github.com/fluent/fluent-bit
- Slack: http://slack.fluentd.org
- Twitter: @fluentbit