We provide the means for the collection, organization and computerized retrieval of knowledgeand Lightweight Data Forwarder for Linux, BSD, macOS and Windows.

June 16, 2023


NOTE: This is a minor hotfix release that covers for corner cases for metrics handling. We keep same release notes as part of v2

Release Notes v2.1.5

Fluent Bit is a Fast and Lightweight Data Processor and Forwarder for Linux, BSD and OSX. We are proud to announce the availability of Fluent Bit v2.1.5.


Fluent Bit v2.1 is the start of the new stable series of the project. During the last months our primary focus has been around extending support for Metrics, Traces and improving performance, among many others.

  • Core

    • log_event_decoder: fix error description function
    • log_event_decoder: add strerror function for decoder
    • aws: protect credential providers with pthread_mutex
    • aws: check for full xml end node in flb_aws_xml_get_val
    • aws: always use calloc for creds
    • aws: sts_credentials: make STS response parsing less brittle by checking for the full XML end node (#7357)
    • multiline: remove incorrect flush
    • signv4: always use calloc for memory allocation
    • input_chunk: change a specifier to fix warning
    • bin: Ensure thread safety on reloading by default
    • bin: Add opt-in option to ensure thread safety on hot reloading
  • Libs

    • cmetrics: upgrade to v0.6.2
  • Plugins


On every release, there are many people involved doing contributions on different areas like bug reporting, troubleshooting, documentation and coding, without these contributions from the community, the project won’t be the same and won’t be in the good shape that it is now. So THANK YOU! to everyone who takes part of this journey!

Join us

We want to hear about you, our community is growing and you can be part of it!, you can contact us at:

Latest Version

New release on July 17, 2024

Fluent Bit v3.1.3 is out!

Check out the Release Notes, read the Updated Documentation or jump directly to the Downloads Section.

We are part of a wide community, no vendor lock-in.