Fluent Bit

Fluent Bit

Server App

Fluent Bit 5.1 is the newest actively maintained release, currently at patch 5.1.2. 2 of 26 tracked cycles remain supported. The next cycle scheduled to reach end-of-life is 5.0, on November 6, 2026.

Latest version

5.1.2

Sep 5, 2026

Actively maintained cycles

2

of 26 tracked

Total cycles tracked

26

since Dec 30, 2016

Support pattern

How Fluent Bit has behaved across the cycles tracked here, rather than what its policy documents state. Useful for judging how much runway a version is likely to have before you commit to it.

Typical support window

8 months

median of 12 completed cycles

New cycle roughly every

4 months

median gap between releases

Compared with server app

−7 mo

shorter than the server app median

Next end of life

58 days

Fluent Bit 5.0

Support windows have stayed consistent across the tracked history, so past cycles are a reasonable guide to what a new one will get.

Computed from release and end-of-life dates tracked for Fluent Bit. Medians are used rather than averages so one unusually short or long release does not skew the figure. Cycles with no recorded end-of-life date are excluded from the support window.

Release lifecycle

Actively maintainedSecurity support onlyEnd of life
Today
5.1Latest
5.1.2 · Sep 5, 2026
5.0
5.0.10 · Sep 4, 2026
4.2
EOL Jun 30, 2026
4.1
EOL Feb 11, 2026
4.0
EOL Dec 24, 2025
3.2
EOL Jun 29, 2025
3.1
EOL Feb 12, 2025
3.0
EOL Oct 8, 2024
2.2
EOL Jun 21, 2024
2.1
EOL Feb 6, 2024
2.0
EOL Jul 19, 2023
1.9
EOL Dec 5, 2022
1.8
EOL Dec 5, 2022
1.7
EOL —
1.6
EOL —
1.5
EOL —
1.4
EOL —
1.3
EOL —
1.2
EOL —
1.1
EOL —
1.0
EOL —
0.14
EOL —
0.13
EOL —
0.12
EOL —
0.11
EOL —
0.10
EOL —
2017201820192020202120222023202420252026

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