Fluentd

Health v2 · maintenance only

Adoption not part of the score

13579 stars · 1405 forks observed · 2026-08-28

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

Fluentd is an open-source data collector that unifies log and event collection from many sources and routes them to files, databases, cloud services, and other backends. It is a CNCF graduated project with a pluggable architecture of 500+ community plugins, JSON-based data handling, and buffering for reliability.

Use cases

• collect and centralize logs from many servers
• ship container and Kubernetes logs to Elasticsearch or S3
• parse and transform application logs into structured JSON
• build a unified logging layer decoupled from backends
• forward logs between systems with buffering and failover
• tail log files and stream them to a data lake

When to choose

• you need a mature, plugin-rich log collector with many input/output integrations
• you want a CNCF-graduated, widely deployed logging layer for Kubernetes or hybrid infrastructure
• you need buffering, failover, and routing between heterogeneous log sources and sinks

When to avoid

• you need an extremely lightweight forwarder with minimal memory footprint (consider Fluent Bit)
• you want a pure high-performance pipeline without Ruby runtime overhead
• you need full observability beyond logs, such as metrics and traces (consider OpenTelemetry)

Facets

service · maturity stable

logging etl streaming plugin-system developer-tools monitoring self-hosted cloud-computing windows cross-platform self-hosted ruby log-collector unified-logging-layer cncf data-pipeline log-forwarding log-aggregation devops data-engineering linux macos docker kubernetes

Member repositories

For agents

markdown · JSON · MCP: product_card(name="fluent/fluentd")