Fluent Bit is a lightweight and high-performance Telemetry Agent designed to collect, process, and forward Logs, Metrics, and Traces from any source to any destination.
It's part of the Graduated Fluentd Ecosystem and a CNCF Cloud Native Computing Foundation project.
Fluent Bit supports a wide array of platforms, including Linux, Windows, MacOS, BSD, and Embedded environments, and is built for maximum efficiency with minimal CPU and memory footprint.
We follow a fast-paced development cycle, with major releases every 3–4 months. The active development branch (master) is currently focused on v4.1.
For version-specific maintenance timelines and policies, see our MAINTENANCE.md.
To track upcoming milestones, visit the project roadmap.
Our official documentation includes installation guides, plugin usage, developer resources, and more:
Build from source:
cd build cmake .. make bin/fluent-bit -i cpu -o stdout -f 1
More details: Build & Install
Fluent Bit is fully modular. It supports:
See the full plugin list in our documentation.
Fluent Bit is deployed over 10 million times daily and has surpassed 15 billion downloads.
Used by companies like:
Want to add your logo? Open an issue.
Fluent Bit is open to community contributions!
Fluent Bit is a CNCF sub-project, sponsored and maintained by major cloud providers and a growing community of contributors and maintainers from across the Cloud Native ecosystem.
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