Fluent Bit 5.0.3

https://fluentbit.io/announcements/v5.0.3/

What's Changed

• tests: integration: introduce in-tree integration test suite by @edsiper in #11663
• parser: Address wrong assignments of timezone at midnight by @cosmo0920 in #11677
• release: update to 5.0.3 by @github-actions[bot] in #11659
• workflows: Unify steps of downloading built macOS packages by @cosmo0920 in #11666
• record accessor: fix CFL root-key matching and container translation by @edsiper in #11673
• env: add new extended format to handle environment variables by @edsiper in #10862
• out_s3: fix retry_limit semantics and multipart upload memory leaks by @singholt in #11669
• lib: cmetrics: upgrade to v2.1.2 by @edsiper in #11685
• in_tail: harden db offset restore across restart by @edsiper in #11691
• oauth2: restore legacy context creation behavior by @edsiper in #11662
• network: Handle baraketed ipv6 addresses by @cosmo0920 in #11676
• in_opentelemetry: fix tag routing issue by @edsiper in #11701
• http_server: add settings for ingress queue by @edsiper in #11704
• out_syslog: address invalid configurations on in syslog by @cosmo0920 in #11706
• input_thread: replace raw read() with pipe abstraction to fix crash by @zshuang0316 in #11623
• workflows: Windows docker insufficient disk space fix by @mabrarov in #11671
• http_client: enhance parser in timeouts and protocol parsing by @edsiper in #11686
• in_ebpf: add tcp trace by @cosmo0920 in #11646

Full Changelog: v5.0.2...v5.0.3

Fluent Bit 4.2.4

https://fluentbit.io/announcements/v4.2.4/

What's Changed

• dockerfiles: Install minimum components and avoiding to use includeRecommended [Backport to 4.2] by @cosmo0920 in #11481
• filter_kubernetes: fix accidentally removed u in prefix [Backport to 4.2] by @cosmo0920 in #11493
• multiline: ml: Propagate metadata even if on exceptions [Backport to 4.2] by @cosmo0920 in #11494
• filter_log_to_metrics: Use pre-allocated slots of memory for labels [Backport to 4.2] by @cosmo0920 in #11514
• workflows: Suppress invalid glob patterns [Backport to 4.2] by @cosmo0920 in #11522
• processor_content_modifier: fix OTEL scope autogenerated key leak [Backport to 4.2] by @cosmo0920 in #11542
• http_server: enforce buffer_max_size for HTTP/2 request bodies [Backport to 4.2] by @cosmo0920 in #11581
• github: workflows: remove trivy cron workflow by @edsiper in #11599
• avro: out_kafka: Fix specification errors in avro format [Backport to 4.2] by @cosmo0920 in #11615
• lib: monkey: upgrade to v1.8.8 by @edsiper in #11693
• engine: use effective post-processor counts for output metrics (v4.2) by @edsiper in #11519
• release: Update to v4.2.4 by @cosmo0920 in #11694

Full Changelog: v4.2.3...v4.2.4

Fluent Bit 5.0.2

https://fluentbit.io/announcements/v5.0.2/

What's Changed

• release: update to 5.0.2 by @github-actions[bot] in #11636
• build: Detect version bump to permit "release: " prefix by @cosmo0920 in #11638
• aws: compression: arrow: Set up proper block size by @cosmo0920 in #11640
• dockerfiles: windows: fixed VS Build Tools installation by @mabrarov in #11643
• out_azure_blob: add path templating support comparable to s3 by @nberlee in #11178
• oauth2: harden token refresh parsing by @erain in #11618
• out_azure_kusto: fix SIGSEGV crashes, resource handle leaks, and HTTP buffer sizing by @tanmaya-panda1 in #11607
• in_ebpf: Add vfs trace by @cosmo0920 in #11568
• agents: add initial AGENTS.md by @edsiper in #11644

Full Changelog: v5.0.1...v5.0.2

Fluent Bit 5.0.1

https://fluentbit.io/announcements/v5.0.1/

What's Changed

• moth: update banner to v5.0 by @edsiper in #11628
• tests: runtime: Mark another port 4318 raced test case by @cosmo0920 in #11627
• tests: CI test stabilization by @mabrarov in #11625
• workflows: ensure 5.0 releases are handled by @patrick-stephens in #11631
• opentelemetry: add OTLP JSON and OTLP Proto helpers by @edsiper in #11624

Full Changelog: v5.0.0...v5.0.1

Fluent Bit 4.2.3.1

https://fluentbit.io/announcements/v4.2.3.1/

Full Changelog: v4.2.3...v4.2.3.1

Fluent Bit 4.2.3

https://fluentbit.io/announcements/v4.2.3/

What's Changed

• release: update to 4.2.3 by @github-actions[bot] in #11310
• copyright: update year to 2026 by @edsiper in #11325
• filter_kubernetes: fix parser annotation leak by @erain in #11333
• github: scripts: commit_linter: Handle bin prefix for fluent-bit.c by @cosmo0920 in #11336
• bin: Handle CONT signal properly under leaks command by @cosmo0920 in #11335
• filter_wasm: Handle group metadata by @cosmo0920 in #11305
• cmake: kafka: fix OAuth Bearer detection on Windows by @bp-cheng in #11294
• maintenance: update branch and security EOL info by @edsiper in #11339
• github: scripts: commit_prefix_check: add config format rules on linter by @cosmo0920 in #11346
• readme: update active branch 4.2 by @edsiper in #11348
• out_opentelemetry: on HTTP/2, read and process gRPC status code by @edsiper in #11347
• config_format: cf_yaml: Align the behavior of dirname against POSIX [Backport to 4.2] by @cosmo0920 in #11363
• filter_log_to_metrics: fix initialization and exception cleanup by @edsiper in #11428
• out_stackdriver: clean up oauth2 cache lifecycle by @edsiper in #11429
• filter_kubernetes: Adjust cleanup ordering to avoid use-after-free [4.2 backport] by @ShelbyZ in #11445
• in_winevtlog: Add text format for event rendering [Backport to 4.2] by @cosmo0920 in #11466
• in_tail: Add skipped_lines counter [Backport to 4.2] by @cosmo0920 in #11467
• in_splunk: Implement handling remote addr feature [Backport to 4.2] by @cosmo0920 in #11465
• aws: switch AWS Endpoints for European Souvereign Cloud [4.2 backport] by @ShelbyZ in #11423
• plugin_proxy: enable event_type specification for proxy plugins (4.2 Backport) by @jmccormick7 in #11241
• in_splunk: Plug memory issues [Backport to 4.2] by @cosmo0920 in #11475

New Contributors

• @bp-cheng made their first contribution in #11294

Full Changelog: v4.2.2...v4.2.3

Fluent Bit 4.2.2

https://fluentbit.io/announcements/v4.2.2/

What's Changed

• packaging: script: Use rockylinux prefix on package testing script by @cosmo0920 in #11297
• release: update to 4.2.2 by @github-actions[bot] in #11296
• security: Update supporting timeline by @cosmo0920 in #11300
• out_cloudwatch_logs: increase MAX_EVENT_LEN to 1MB with tests by @ShelbyZ in #11159
• aws: Implement simple_aggregation operation by @ShelbyZ in #11284
• out_kinesis_firehose: enable HTTP debugging for AWS client requests by @runderwo in #11015
• http_client: add ipv6 bracket if missing from host address by @ShelbyZ in #11181
• lib: updates 20251223 by @edsiper in #11309

New Contributors

• @ShelbyZ made their first contribution in #11159

Full Changelog: v4.2.1...v4.2.2

Fluent Bit 4.2.1

https://fluentbit.io/announcements/v4.2.1/

What's Changed

• release: update to 4.2.1 by @github-actions[bot] in #11154
• workflows: Not to make latest on publishing 4.1 series on GitHub Relases by @cosmo0920 in #11166
• in_forward: fix connection release on pause memory corruption by @sparrc in #11114
• workflows: Remove unused tools from unit-tests workflow for extending available disk space by @cosmo0920 in #11184
• workflows: bump actions/checkout from 5 to 6 by @dependabot[bot] in #11190
• in_opentelemetry: added five missing configuration option descriptions. Fixes #11191. by @eschabell in #11192
• out_s3: implement retry_limit parameter by @shadowshot-x in #10825
• in_blob: added missing configuration descriptions. Fixes #11204. by @eschabell in #11206
• tls: openssl: Implement flexible certstore loading on Windows by @cosmo0920 in #11200
• in_kubernetes_events: add support for configuring input upstream network setup by @slab-msft in #11188
• workflows: add new commit linter tool by @edsiper in #11245
• workflows: bump actions/checkout from 4 to 6 by @dependabot[bot] in #11248
• workflows: bump actions/setup-python from 5 to 6 by @dependabot[bot] in #11249
• dockerfile: Docker image to support large page sizes by @mlsorensen in #11164
• dockerfile: update to Debian Trixie by @patrick-stephens in #11006
• in_elasticsearch: fixing missing config parameter description for http2. Fixes #11221. by @eschabell in #11226
• in_exec_wasi: fix config key typo 'bool' to 'oneshot'. Fixes #11232. by @eschabell in #11233
• in_forward: improve configuration parameter descriptions by @eschabell in #11235
• github: commit_linter: Make more flexibility for commit linter by @cosmo0920 in #11251
• build: prevent the toolchain from emitting an executable stack by @edsiper in #11258
• in_forward: fix segfault and double-free in trace path handling by @edsiper in #11257
• in_node_exporter_metrics: Increase buffer size to read /proc/stat correctly by @piwai in #11253
• in_http: added missing config parameter descriptions. by @eschabell in #11240
• workflows: bump peter-evans/create-pull-request from 7 to 8 by @dependabot[bot] in #11275
• out_flowcounter: Fix incorrect bytes calcuation by @cosmo0920 in #11259
• workflows: bump actions/cache from 4 to 5 by @dependabot[bot] in #11281
• workflows: bump actions/download-artifact from 6 to 7 by @dependabot[bot] in #11290
• workflows: bump actions/upload-artifact from 5 to 6 by @dependabot[bot] in #11289
• github: workflows: Clean up needless resources on GHA workers by @cosmo0920 in #11288
• in_ebpf: add three missing config option descriptions. Fixes #11221. by @eschabell in #11222
• in_gpu_metrics: updated config parameters descriptions. by @eschabell in #11237
• build: Tweak linker flags for zstd by @cosmo0920 in #11111
• in_winevtlog: Plug glitches of time offset for DST/STD switches by @cosmo0920 in #11291

New Contributors

• @slab-msft made their first contribution in #11188
• @mlsorensen made their first contribution in #11164
• @piwai made their first contribution in #11253

Full Changelog: v4.2.0...v4.2.1

Fluent Bit 4.0.14

https://fluentbit.io/announcements/v4.0.14/

What's Changed

• release: Update version to 4.0.14 by @cosmo0920 in #11030
• engine: fix memory leaks with parse error handling in parse_string_map_to_list (backport of #10943). by @pwhelan in #10944
• help: add space for outputs and processors when generating schema. by @pwhelan in #11021
• in_tail: fix last_processed_bytes calculation [Backport to 4.0] by @cosmo0920 in #11048
• fstore: safe check on fsf file deletion [Backport to 4.0] by @cosmo0920 in #11058
• tests: internal: aws_credentials_sts: fix unit test (timestamps) by @cosmo0920 in #11085
• wasm: Plug wasm heap leakages [Backport to 4.0] by @cosmo0920 in #11118
• in_forward: fix connection release on pause memory corruption [Backport to 4.0] by @cosmo0920 in #11182
• in_opentelemetry: added five missing configuration option descriptions [backport 4.0] by @eschabell in #11195
• workflows: Remove unused tools from unit-tests workflow for extending available disk space [Backport to 4.0] by @cosmo0920 in #11263
• out_flowcounter: Fix incorrect bytes calcuation [Backport to 4.0] by @cosmo0920 in #11260
• in_forward: fix segfault and double-free in trace path handling [Backport to 4.0] by @cosmo0920 in #11266
• in_winevtlog: Plug glitches of time offset for DST/STD switches [Backport to 4.0] by @cosmo0920 in #11298

Full Changelog: v4.0.13...v4.0.14

Fluent Bit 4.1.2

https://fluentbit.io/announcements/v4.1.2/

What's Changed

• release: update to 4.1.2 by @github-actions[bot] in #11005
• reload: fix race between watchdog start and setting async cancellation by @stoksc in #11012
• storage: fix heap corruption in chunk sort parser by @cosmo0920 in #11017
• in_calyptia_fleet: add support for net.* properties for the upstream connection. by @pwhelan in #10998
• in_forward: fix username parsing by @edsiper in #11026
• in_forward: Fix incorrect user auth sequence by @cosmo0920 in #11028
• help: add space for outputs and processors when generating schema. [Backport to 4.1] by @cosmo0920 in #11066
• tests: internal: aws_credentials_sts: fix unit test (timestamps) by @cosmo0920 in #11086
• fstore: safe check on fsf file deletion [Backport to 4.1] by @cosmo0920 in #11061
• wasm: Plug wasm heap leakages [Backport to 4.1] by @cosmo0920 in #11119
• out_s3: Add a NULL check for plugging SEGV on dry_run [Backport to 4.1] by @cosmo0920 in #11123
• in_forward: fix connection release on pause memory corruption [backport to 4.1] by @sparrc in #11179
• in_opentelemetry: added five missing configuration option descriptions [backport 4.1] by @eschabell in #11194
• workflows: Remove unused tools from unit-tests workflow for extending available disk space [Backport to 4.1] by @cosmo0920 in #11264
• out_flowcounter: Fix incorrect bytes calcuation [Backport to 4.1] by @cosmo0920 in #11261
• in_forward: fix segfault and double-free in trace path handling [Backport to 4.1] by @cosmo0920 in #11267

Full Changelog: v4.1.1...v4.1.2