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fluent-bit 5.1.3 download

Fast and Lightweight Logs, Metrics and Traces processor

Chronosphere Inc. Firewall & privacy #23 Firewall & privacy
This is an older version. The current version is 5.1.5. fluent-bit 5.1.5 · Released:
5.1.3 is part of the 5.1 line, which is still supported. endoflife.date

Installer files 5.1.3

ArchitectureTypeScopeFile sizeDownloadSHA256
64-bit EXE (NSIS) All users 22.9 MB packages.fluentbit.io VirusTotal
64-bit ZIP → Portable — 39.8 MB packages.fluentbit.io VirusTotal
ARM64 EXE (NSIS) All users 21.5 MB packages.fluentbit.io VirusTotal
ARM64 ZIP → Portable — 38.7 MB packages.fluentbit.io VirusTotal
32-bit EXE (NSIS) All users 21.2 MB packages.fluentbit.io VirusTotal
32-bit ZIP → Portable — 36.7 MB packages.fluentbit.io VirusTotal

Link and SHA256 come from the Windows Package Manager community manifest. Compare the hash of the downloaded file before running it.

Release notes

https://fluentbit.io/announcements/v5.1.3/
What's Changed
- release: update to 5.1.3 by @github-actions[bot] in https://github.com/fluent/fluent-bit/pull/12379
- workflows: bump reviewdog/action-actionlint from 1.73.3 to 1.73.4 by @dependabot[bot] in https://github.com/fluent/fluent-bit/pull/12381
- github: workflows: Mitigate order dependent issue for uploading task for Windows by @cosmo0920 in https://github.com/fluent/fluent-bit/pull/12382
- dockerfile: upgrade base packages to remediate OS CVEs (#12284) by @sachinbh95 in https://github.com/fluent/fluent-bit/pull/12291
- workflows: bump github/codeql-action/upload-sarif from 4.37.9 to 4.38.0 by @dependabot[bot] in https://github.com/fluent/fluent-bit/pull/12404
- http: downstream: plug intermittent unfriendly logs by @cosmo0920 in https://github.com/fluent/fluent-bit/pull/12407
- out_syslog: support RFC6578 by @cosmo0920 in https://github.com/fluent/fluent-bit/pull/12405
- tests: runtime: Stabilize chronicle assertions with eliminating push races by @cosmo0920 in https://github.com/fluent/fluent-bit/pull/12389
- tests: runtime: Fix assertion failures on Ubuntu 26.04 by @cosmo0920 in https://github.com/fluent/fluent-bit/pull/12388
- in_opentelemetry: preserve signed 64-bit log body integers by @edsiper in https://github.com/fluent/fluent-bit/pull/12419
- workflows: bump reviewdog/action-hadolint from 1.53.0 to 1.54.0 by @dependabot[bot] in https://github.com/fluent/fluent-bit/pull/12422
- workflows: bump reviewdog/action-shellcheck from 1.32.1 to 1.33.0 by @dependabot[bot] in https://github.com/fluent/fluent-bit/pull/12423
- workflows: bump reviewdog/action-actionlint from 1.73.4 to 1.74.0 by @dependabot[bot] in https://github.com/fluent/fluent-bit/pull/12421
- out_arvancloud_cloudlogs: add new output plugin for ArvanCloud CloudLogs by @javadnasrolahi in https://github.com/fluent/fluent-bit/pull/11095
- in_kubernetes_events: add sqlite indexes by @cosmo0920 in https://github.com/fluent/fluent-bit/pull/12366
- bulk_search: es: opensearch: Acknowledge reasons of bulk failures by @cosmo0920 in https://github.com/fluent/fluent-bit/pull/12358
- emitter: ml: plug data losses during multiline processing on shutdown by @cosmo0920 in https://github.com/fluent/fluent-bit/pull/12352
- out_kafka: implement protobuf format of kafka schema registry support by @cosmo0920 in https://github.com/fluent/fluent-bit/pull/12411
- input_chunk: fix down chunk placement under storage backpressure by @edsiper in https://github.com/fluent/fluent-bit/pull/12403
- out_s3: mitigate SEGV/heap corruption by @cosmo0920 in https://github.com/fluent/fluent-bit/pull/12380
- packaging: distros: centos: Enable kafka input/output plugins for Stream 9/10 by @cosmo0920 in https://github.com/fluent/fluent-bit/pull/12414
- packaging: distros: almalinux: rockylinux: Install zlib-devel correctly by @cosmo0920 in https://github.com/fluent/fluent-bit/pull/12415
- tests: fix CloudWatch event size regression coverage by @cosmo0920 in https://github.com/fluent/fluent-bit/pull/12424
- tests: runtime_shell: Add timeouts for runtime shell testing by @cosmo0920 in https://github.com/fluent/fluent-bit/pull/12386
- out_gcs: fix networking and worker crashes, add total_file_size by @balys in https://github.com/fluent/fluent-bit/pull/12390
- out_opentelemetry: preserve failed log batch results by @grolegor in https://github.com/fluent/fluent-bit/pull/12385
- in_podman_metrics: do not abort startup when the initial scrape fails by @stondo in https://github.com/fluent/fluent-bit/pull/12391
- opentelemetry: fix OTLP JSON trace status code interoperability by @edsiper in https://github.com/fluent/fluent-bit/pull/12428
- out_stackdriver: fix races on shared credentials by @cosmo0920 in https://github.com/fluent/fluent-bit/pull/12433
- workflows: bump docker/setup-qemu-action from 4.3.0 to 4.4.0 by @dependabot[bot] in https://github.com/fluent/fluent-bit/pull/12439
- workflows: bump docker/build-push-action from 7.3.0 to 7.4.0 by @dependabot[bot] in https://github.com/fluent/fluent-bit/pull/12438
- workflows: bump docker/setup-buildx-action from 4.3.0 to 4.4.0 by @dependabot[bot] in https://github.com/fluent/fluent-bit/pull/12437
- tls: add tls.crl_file support for certificate revocation checks by @egershonNvidia in https://github.com/fluent/fluent-bit/pull/12091
- pack: harden flb_msgpack_to_json buffer handling by @vitaly-sinev in https://github.com/fluent/fluent-bit/pull/12133
- out_stackdriver: Fix service account regression by @cosmo0920 in https://github.com/fluent/fluent-bit/pull/12440
- in_tail: Plug windows handle leak on exceptions by @cosmo0920 in https://github.com/fluent/fluent-bit/pull/12435
- in_opentelemetry: validate log protobuf depth before unpacking by @edsiper in https://github.com/fluent/fluent-bit/pull/12449
- in_syslog: initialize parser timestamps for stream records by @edsiper in https://github.com/fluent/fluent-bit/pull/12447
- in_unix_socket: initialize failed decode status by @edsiper in https://github.com/fluent/fluent-bit/pull/12448
- out_opentelemetry: add metric age cut-off filter by @flobz in https://github.com/fluent/fluent-bit/pull/12396
- workflows: bump reviewdog/action-actionlint from 1.74.0 to 1.76.0 by @dependabot[bot] in https://github.com/fluent/fluent-bit/pull/12452
- workflows: bump reviewdog/action-hadolint from 1.54.0 to 1.55.0 by @dependabot[bot] in https://github.com/fluent/fluent-bit/pull/12453
- workflows: bump reviewdog/action-shellcheck from 1.33.0 to 1.34.0 by @dependabot[bot] in https://github.com/fluent/fluent-bit/pull/12454
- workflows: bump github/codeql-action/upload-sarif from 4.38.0 to 4.38.1 by @dependabot[bot] in https://github.com/fluent/fluent-bit/pull/12455
- lib: update bundled libraries 20260919 by @edsiper in https://github.com/fluent/fluent-bit/pull/12450
- tests: synchronize S3 runtime chunk setup by @cosmo0920 in https://github.com/fluent/fluent-bit/pull/12442
- in_elasticsearch: respond to malformed bulk payloads by @edsiper in https://github.com/fluent/fluent-bit/pull/12445
- pack: harden JSON conversion buffers and stack usage by @edsiper in https://github.com/fluent/fluent-bit/pull/12458
- security: harden input handling across core, http_server and plugins by @edsiper in https://github.com/fluent/fluent-bit/pull/12461
- workflows: bump reviewdog/action-actionlint from 1.76.0 to 1.76.3 by @dependabot[bot] in https://github.com/fluent/fluent-bit/pull/12464
- github: workflows: Use cmake 4.2 and minimum policy by @cosmo0920 in https://github.com/fluent/fluent-bit/pull/12459
- workflows: bump reviewdog/action-actionlint from 1.76.3 to 1.77.0 by @dependabot[bot] in https://github.com/fluent/fluent-bit/pull/12473
- workflows: bump github/codeql-action/upload-sarif from 4.38.1 to 4.38.2 by @dependabot[bot] in https://github.com/fluent/fluent-bit/pull/12474
- in_syslog: fix fragile parsing on the first part of tcp frame by @cosmo0920 in https://github.com/fluent/fluent-bit/pull/12477
- http_client: Fix a building failure on specifying FLB_AWS=Off by @cosmo0920 in https://github.com/fluent/fluent-bit/pull/12475
- in_windows_exporter_metrics: fix collecting tcp metrics by @cosmo0920 in https://github.com/fluent/fluent-bit/pull/12472
- lib: cmetrics: upgrade to v2.2.5 by @edsiper in https://github.com/fluent/fluent-bit/pull/12470
- security: harden network input handling (part 2) by @edsiper in https://github.com/fluent/fluent-bit/pull/12463
- workflows: bump uraimo/run-on-arch-action from 3.2.0 to 3.2.1 by @dependabot[bot] in https://github.com/fluent/fluent-bit/pull/12482
- security: harden record processing in core, filters and outputs by @edsiper in https://github.com/fluent/fluent-bit/pull/12481
- tests: processor_labels: confirm plugging issue of missing static labels on concatenation by @cosmo0920 in https://github.com/fluent/fluent-bit/pull/12420
- config_format: mitigate regression of absolute path of loading yaml config by @cosmo0920 in https://github.com/fluent/fluent-bit/pull/12495
- opentelemetry: fix trace status validation and filesystem replay by @edsiper in https://github.com/fluent/fluent-bit/pull/12490
- http_server: restrict trace API outputs and fix out_es cloud_id overflow by @edsiper in https://github.com/fluent/fluent-bit/pull/12497
- input hardening: coroutine accept for tcp inputs, http/otlp parsing, kubernetes type checks by @edsiper in https://github.com/fluent/fluent-bit/pull/12498
- http_server: output: plug leaks on prometheus scrape by @cosmo0920 in https://github.com/fluent/fluent-bit/pull/12465
- in_node_exporter_metrics: Set up correct timestamps with expirations. by @cosmo0920 in https://github.com/fluent/fluent-bit/pull/12466
- tests: integration: cover multiline key group overflow by @cosmo0920 in https://github.com/fluent/fluent-bit/pull/12496
- out_cloudwatch_logs: isolate stream caches per output worker by @ParakhJaggi in https://github.com/fluent/fluent-bit/pull/12427
New Contributors
- @sachinbh95 made their first contribution in https://github.com/fluent/fluent-bit/pull/12291
- @javadnasrolahi made their first contribution in https://github.com/fluent/fluent-bit/pull/11095
- @grolegor made their first contribution in https://github.com/fluent/fluent-bit/pull/12385
- @egershonNvidia made their first contribution in https://github.com/fluent/fluent-bit/pull/12091
- @vitaly-sinev made their first contribution in https://github.com/fluent/fluent-bit/pull/12133
- @ParakhJaggi made their first contribution in https://github.com/fluent/fluent-bit/pull/12427
Full Changelog: https://github.com/fluent/fluent-bit/compare/v5.1.2...v5.1.3

https://github.com/fluent/fluent-bit/releases/tag/v5.1.3

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