Overview
Fluentd is an open-source logging layer that collects events from multiple data sources and writes them to files, relational databases, NoSQL systems, IaaS, SaaS, Hadoop, and other destinations. It connects log producers and storage or analysis systems through a common layer.
Based on official documentation; not hands-on tested · Content checked:
Bring different log paths into a unified logging layer
Fluentd gathers events into a common processing path and routes them to destinations selected for each workflow. Its README demonstrates a minimal setup installed as a gem, started with a configuration file, and fed a JSON event through fluent-cat.
Sources: [1]
For standardizing collection as sources and destinations multiply
It fits operations platforms that aggregate logs from servers, applications, and services before distributing them to multiple data stores or external services. The CNCF project links to official documentation, GitHub Discussions, and Slack for further guidance.
Sources: [1]
Review Ruby requirements, release lines, and destination-specific behavior
The current master branch is for v1 development, and the README requires Ruby 3.3 or later for development. The v0.12 line is no longer supported. Select a release and verify input and output plugins, credentials, buffering, and retry behavior for the deployment; follow the SECURITY document for vulnerability reports.
Sources: [1]
Official sources
- [1]Fluentd README(2026-09-13)
Supplemental curator note
Selected as a Japanese founder-led project that reached CNCF Graduated status and accumulated substantial Japanese community documentation without an official localized site.
Growth trends
Last 30 days
13,585 Stars
Trend data is still being collected.
Built with
- Ruby
Categories and tags
Categories
GitHub Topics
- fluentd
- logging
- data-collector
- ruby
- cncf
GitHub dataView detailed GitHub data
- Stars
- 13,585
- Forks
- 1,405
- Watchers
- 328
- Open issues
- 127
- Contributors
- 248
- Primary language
- Ruby
- License
- Apache-2.0
- Repository last updated
- Sep 13, 2026
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