Fluentd vs Logstash
A side-by-side comparison of two self-hosted monitoring & status options — licensing, setup difficulty, resource needs, and what each one replaces.
Not the right match-up?
Fluentd
Unified logging layer for collecting and routing data
VS
Logstash
Server-side data processing pipeline for logs
| Feature | Fluentd | Logstash |
|---|---|---|
| Category | Monitoring & Status | Monitoring & Status |
| License | Apache-2.0 | Apache-2.0 |
| Language | Ruby | Java |
| Setup difficulty | Medium | Medium |
| Min. RAM | 128 MB | 1,024 MB |
| Deployment | docker, kubernetes, binary | docker, kubernetes, binary |
| GitHub stars | ★ 13,576 | ★ 14,912 |
| First released | 2011 | 2009 |
| Replaces | Logstash | Fluentd |
Why pick each one
Frequently asked questions
Is Fluentd or Logstash better?
Neither is universally better. Logstash has the larger community; both share a medium setup difficulty, so the decision comes down to features and licensing.
Are Fluentd and Logstash free and open-source?
Yes. Fluentd is licensed under Apache-2.0 and Logstash under Apache-2.0. Both can be self-hosted at no software cost.
Can I run Fluentd and Logstash with Docker?
Fluentd: yes. Logstash: yes.