fluent/fluent-bit

Health v2 · maintenance only

Adoption not part of the score

8062 stars · 1985 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

Fluent Bit is a fast, lightweight telemetry agent written in C that collects, processes, and forwards logs, metrics, and traces from any source to any destination. It is a CNCF graduated ecosystem project with a pluggable architecture (70+ plugins), SQL stream processing, and native OpenTelemetry support.

Use cases

• collect and forward container logs to elasticsearch
• ship kubernetes pod logs to a central logging backend
• tail log files and parse json or regex messages
• route opentelemetry traces and metrics to a collector
• lightweight log agent for low-memory or embedded devices
• enrich and filter telemetry records before delivery
• run sql queries over streaming log data
• expose prometheus metrics from a data pipeline

When to choose

• you need a high-throughput, low-footprint log/metrics/traces forwarder
• you run cloud-native or containerized (docker/kubernetes) workloads
• you want opentelemetry-native ingestion and delivery
• you need broad platform support including windows, bsd, and embedded arm

When to avoid

• you need heavy in-pipeline analytics better suited to a stream processor like flink
• you prefer configuring fluentd with its large ruby plugin ecosystem
• you want a full observability backend rather than a data shipper

Facets

service · maturity stable

logging monitoring tracing streaming etl middleware monitoring cloud-computing self-hosted windows bsd self-hosted cloud embedded telemetry-agent opentelemetry prometheus log-forwarder cncf data-pipeline otlp fluentd devops containers linux macos docker kubernetes

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