Question: Fluent Bit compatibility with Kubernetes versions

[hahakiki2025]

Hi team,

I’d like to confirm whether Fluent Bit provides any documentation or guarantees regarding compatibility with different Kubernetes versions.

I checked the Fluent Bit 4.0 documentation but couldn’t find any mention of Kubernetes version compatibility. From my perspective, the Kubernetes filter plugin may be affected by Kubernetes version changes, since it communicates with the Kubernetes API server to retrieve metadata.

My questions are:

• Does Fluent Bit upstream test against new Kubernetes releases to ensure compatibility?
• Is there an official matrix or documentation that tracks which Kubernetes versions are verified to work with each Fluent Bit release?

Thanks!