Fluent Bit
Official docs outline
14 sections- What is Fluent Bit
Lightweight telemetry agent for logs, metrics and traces.
- Key Concepts
Events, tags, timestamps, records, matches and buffers.
- Data Pipeline
Input, parser, filter, buffer, router, output flow.
- Inputs
Input plugins for tail, systemd, forward, metrics.
- Parsers
Structuring unstructured logs with JSON, regex and others.
- Filters
Enrichment, modification, kubernetes, lua and grep filters.
- Outputs
Destinations like Elasticsearch, Loki, S3, Kafka and more.
- Buffering and Storage
Memory and filesystem buffering.
- Configuration
YAML and classic configuration formats.
- Scheduling and Retries
Output failures, retries and the scheduler.
- Backpressure
Handling slow outputs and memory limits.
- Monitoring
HTTP server, health and metrics.
- Performance Tips
Multithreading and tuning.
- Transport Security
TLS configuration for inputs and outputs.
Each section links to the official page. Titles and summaries by Extra Credit; the docs belong to their authors.
Versions and support
6 release lines| Line | Released | Latest | Support |
|---|---|---|---|
| 5.1 | Aug 6, 2026 | 5.1.5 | Supported |
| 5.0 | Mar 31, 2026 | 5.0.11 | Until Nov 6, 2026 |
| 4.2 | Nov 11, 2025 | 4.2.8 | Ended Jun 30, 2026 |
| 4.1 | Sep 24, 2025 | 4.1.2 | Ended Feb 11, 2026 |
| 4.0 | Mar 29, 2025 | 4.0.14 | Ended Dec 24, 2025 |
| 3.2 | Nov 12, 2024 | 3.2.10 | Ended Jun 29, 2025 |
Source: endoflife.date