Knowledge Base

Release Notes v0.11.0

Fluent Bit is a Fast and Lightweight Data Forwarder for Linux, BSD and OSX. We are proud to announce the availability of Fluent Bit v0.11.0.


This release is a major version, several new features have been added:

  • Core

    • Pack: new function to convert Msgpack to JSON
    • Regex: new internal interface to provide regex support to the core and plugins.
    • Hash: new hashing interface.
    • Environment: Fluent Bit now is aware about environment variables and allow to set and use specific variables in configuration files.
    • Thread: ucontext backend deprecated. Everything is handled by libco now.
    • Logging fixed for master process.
    • HTTP Client: map payload content in response.
    • New option -R to load parsers file.
  • Parsers

    • A new Parsers interface have been added. From now plugins can take advante of built-in parsing support. Given a collected log/string, when applyng a parser rule it's possible to capture specific fields and convert the unstructure log to a structured one.
    • The parsers are defined in a configuration file, the parsing can be based in a regular expression or mapping a direct JSON format. It also supports time format lookup.
  • Libraries / Dependencies

    • Onigmo: new Regex engine.
    • SQLite3 upgraded to v3.16.1.
    • cJSON deprecated (finally).
  • Filter

    • New Filtering plugin architecture.
    • filter_kubernetes: new filter to enrich logs with Kubernetes metadata. It append POD and container info gathered locally from file names and from the API server.
    • filter_grep: new grep filter. It supports regex and exclude modes.
  • Proxy

    • Refactored Golang interface for output plugins
  • Logger

    • Fix initialization mode and make it more friendly for daemon mode.
  • Input

    • input plugins: msgpack buffers now are handled by Fluent Bit Core, input plugins uses new API to ingest data.
    • in_tail: add support for parsing, new Parser configuration key.
    • in_tail: add support to append file name to the tags when a wildcard is specified.
    • in_tail: add support to append file name in the record map through path\key_ option.
    • in_proc: new features to collect memory usage and count open file descriptors by process.
    • in_mem: adjustments to generate info similar to free(1) command.
    • in_disk: new plugin to gather disks metrics.
    • in_forward: add support for PackedForward mode (used by Fluentd).
  • Output Plugins

    • out_flowcounter: support counters for different inputs.
    • out_lib: support JSON output.
    • out_file: new plugin to write records to the file system.
    • out_es (Elasticsearch): new support for logstash format.
    • out_es (Elasticsearch): add support for nested fields.
    • out_es (Elasticsearch): fix buffering realloc logic.
    • out_nats: enable by default.
    • out_influxdb: fix buffering realloc logic.


We would like to thanks to the following people who have been involved doing coding, bug fixes, troubleshooting, reporting issues and general contributions on this release:

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