Fluent Bit 4.2.0

https://fluentbit.io/announcements/v4.2.0/

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
• workflows: Make not to be the latest release for 4.0 branch by @cosmo0920 in #10993
• build: bump to v4.2.0 by @edsiper in #11037
• security: update versions and general info by @edsiper in #11038
• help: add space for outputs and processors when generating schema. by @pwhelan in #11020
• opentelemetry: traces: unify JSON to ctrace encoder by @edsiper in #11042
• routing: add new routing mechanism for input plugins by @edsiper in #11041
• mp: extend cobj API to expose group metadata and attributes by @edsiper in #11043
• in_node_exporter_metrics: add netstat linux collector by @edsiper in #11052
• fstore: safe check on fsf file deletion by @edsiper in #11050
• workflows: Handle 4.1 branches events and fix type inference errors for 4.0 branch by @cosmo0920 in #11062
• router: add conditional support for Logs by @edsiper in #11055
• aws_credential_sts: internal: Fix unit test failures by @cosmo0920 in #11077
• workflows: bump actions/upload-artifact from 4 to 5 by @dependabot[bot] in #11075
• workflows: bump actions/download-artifact from 5 to 6 by @dependabot[bot] in #11074
• router_condition: Fix unconditional route check in routing by @cosmo0920 in #11087
• out_vivo_exporter: add versioned API endpoints by @edsiper in #11040
• router: add contexts to conditional support for direct route paths by @edsiper in #11091
• snap: Upgrade snap from core18 to core20 by @cosmo0920 in #11069
• doc-reports: add cncf audit report by @DavidKorczynski in #11056
• chunks: extend metadata to support routing information (direct routes) by @edsiper in #11097
• workflows: bump helm/kind-action from 1.12.0 to 1.13.0 by @dependabot[bot] in #11100
• CODEOWNERS: update AWS maintainers and cleanup by @edsiper in #11109
• dockerfile: removed unused DLLs from image for Windows Containers by @mabrarov in #10233
• kafka: fix cmake cross compile error by @ThomasDevoogdt in #9600
• build: workflows: Add a rules for checking incompatible types strictly by @cosmo0920 in #10655
• tls: openssl: output: Handle certificates thumbprints by @cosmo0920 in #11009
• in_syslog: Add support for RFC 6587 octet-counting by @cosmo0920 in #11035
• wasm: Plug wasm heap leakages by @cosmo0920 in #11076
• scheduler: engine: output_thread: Plug macOS abort on dry-run by @cosmo0920 in #11099
• router: extend router interface to support metrics (v3) by @edsiper in #11108
• out_s3: Add a NULL check for plugging SEGV on dry_run by @cosmo0920 in #11117
• build: Add workdir option for the default registration of Windows service by @cosmo0920 in #11124
• packaging: add missing SASL dependencies for Rocky/AlmaLinux by @patrick-stephens in #11127
• fix: Make TLS initialization thread-safe and idempotent using pthread_once by @ThomasBrady in #11090
• out_opensearch: release aws signature a retry or error happens by @edsiper in #11140
• routing: extend input name resolution for safer direct route paths by @edsiper in #11141
• motd: add 4.2 banner by @edsiper in #11142
• org: update organization status change by @edsiper in #11143
• out_http: Plug a NULL dereference by @cosmo0920 in #11034
• out_http: Added PUT support by @nicknezis in #10882
• routing: introduce metrics for unmatched (dropped) logs by @edsiper in #11144
• in_tail: Implement long line truncation by @cosmo0920 in #11059
• in_systemd: always reset cursor before iterating fields by @edsiper in #11073
• packaging: add -L flag to curl for redirect support by @sakshitposting-irl in #11137
• storage: config: engine: Introduce dead letter queue by @cosmo0920 in #11000
• filter_kubernetes: use service account issuer to detect EKS env (compiler fix) by @edsiper in #11146
• workflows: staging-release: add v4.2 by @edsiper in #11153

New Contributors

• @nicknezis made their first contribution in #10882
• @sakshitposting-irl made their first contribution in #11137

Full Changelog: v4.1.1...v4.2.0

Fluent Bit 4.0.13

https://fluentbit.io/announcements/v4.0.13/

What's Changed

• release: Update version to v4.0.13 by @cosmo0920 in #10994
• in_calyptia_fleet: load configuration on initial startup (backport #10996 to 4.0). by @pwhelan in #10997
• storage: fix heap corruption in chunk sort parser [Backport to 4.0] by @cosmo0920 in #11022
• in_forward: Fix of handshaking on forward protocol [Backport to 4.0] by @cosmo0920 in #11029

Full Changelog: v4.0.12...v4.0.13

Fluent Bit v4.1.1

What's Changed

• release: update to 4.1.1 by @github-actions[bot] in #10932
• workflows: windows: Add a testing flow with using ARM64 Windows runner by @cosmo0920 in #10931
• scripts: Handle two or more digits for patch version by @cosmo0920 in #10936
• in_emitter: in_forward: Ensure ring buffer on threaded mode in emitter by @cosmo0920 in #10950
• in_splunk: return correct error response for http/1 handler. by @pwhelan in #10940
• workflows: bump ossf/scorecard-action from 2.4.2 to 2.4.3 by @dependabot[bot] in #10957
• opentelemetry: allow empty strings for TraceID and SpanID (logs) by @edsiper in #10956
• workflows: bump peter-evans/dockerhub-description from 4 to 5 by @dependabot[bot] in #10964
• workflows: add sanity check for toolchains w/ CXX support by @ThomasDevoogdt in #9277
• in_winevtlog: Implement trying to reconnect on cancel mechanism by @cosmo0920 in #10942
• reload: refactor watchdog to be preemptable on windows. by @pwhelan in #10968
• docs: fix broken links by @llstrk in #10965
• in_docker: add helper for container name parsing by @edsiper in #10972
• out_opentelemetry: add configurable log resource limits by @edsiper in #10955
• out_opentelemetry: no longer reallocates the http2 setting string by @edsiper in #10960
• in_http: fix handling of URL encoded value by @edsiper in #10961
• out_file: sanitize incoming Tag to prevent path traversal by @edsiper in #10969
• router: use memchr() and tag length for matching tags by @edsiper in #10976
• in_forward: Fix user authentication to align Fluentd's behavior by @cosmo0920 in #10973
• in_http: in_splunk: in_elasticsearch: fix tag_key lookup by @edsiper in #10967
• in_calyptia_fleet: load configuration on initial startup. by @pwhelan in #10996
• engine: fix memory leaks with parse error handling in parse_string_map_to_list. by @pwhelan in #10943
• workflows: bump github/codeql-action from 3 to 4 by @dependabot[bot] in #10999
• out_es: fix elasticsearch output api key usage by @graphaelli in #10949

New Contributors

• @llstrk made their first contribution in #10965
• @graphaelli made their first contribution in #10949

Full Changelog: v4.1.0...v4.1.1

Fluent Bit 4.0.12

https://fluentbit.io/announcements/v4.0.12/

What's Changed

• release: Update to v4.0.12 by @cosmo0920 in #10935
• in_splunk: fix the invalid data format response when submitting valid data. by @pwhelan in #10939
• opentelemetry: allow empty strings for TraceID and SpanID (logs) [Backport to 4.0] by @cosmo0920 in #10962
• in_emitter: in_forward: Ensure ring buffer on threaded mode in emitter [Backport to 4.0] by @cosmo0920 in #10951
• out_opentelemetry: no longer reallocates the http2 setting string [Backport to 4.0] by @cosmo0920 in #10963
• log_to_metrics: fix improper handling of record accessor context [Backport to 4.0] by @cosmo0920 in #10980
• out_opentelemetry: add configurable log resource limits [Backport to 4.0] by @cosmo0920 in #10981
• in_http: fix handling of URL encoded value [Backport to 4.0] by @cosmo0920 in #10982
• out_file: sanitize incoming Tag to prevent path traversal [Backport to 4.0] by @cosmo0920 in #10983
• in_docker: add helper for container name parsing [Backport to 4.0] by @cosmo0920 in #10984
• reload: add a timeout mechanism and its based commits backporting [Backport to 4.0] by @cosmo0920 in #10985
• in_forward: Fix user authentication to align Fluentd's behavior [Backport to 4.0] by @cosmo0920 in #10986
• router: use memchr() and tag length for matching tags [Backport to 4.0] by @cosmo0920 in #10987
• reload: refactor watchdog to be preemptable on windows. [Backport to 4.0] by @cosmo0920 in #10988
• in_http: in_splunk: in_elasticsearch: fix tag_key lookup [Backport to 4.0] by @cosmo0920 in #10991

Full Changelog: v4.0.11...v4.0.12

Fluent Bit 4.0.11

https://fluentbit.io/announcements/v4.0.11/

What's Changed

• release: Update version 4.0 [4.0 branch] by @cosmo0920 in #10897
• packaging: support Alma/Rocky/CentOS 10 plus Debian Trixie/13 [Backport to 4.0] by @patrick-stephens in #10907
• input: private plugins must use global event loop [Backport to 4.0] by @cosmo0920 in #10934
• tls: fix regression and proper shutdown [Backport to 4.0] by @cosmo0920 in #10933

Full Changelog: v4.0.10...v4.0.11

Fluent Bit v4.1.0

general announcement: https://fluentbit.io/announcements/v4.1.0/

Fluent Bit 4.0.10

https://fluentbit.io/announcements/v4.0.10/

What's Changed

• release: Update version to v4.0.10 by @cosmo0920 in #10836
• in_splunk: fix the response when receiving empty payload - backport of 10800 by @lecaros in #10856
• in_event_type: implement pause/resume to stop timed collector. by @pwhelan in #10852
• workflows: Install NSIS via chocolatey [Backport to 4.0] by @cosmo0920 in #10859
• in_winevtlog: Plug possible SEGV occurrence paths [Backport to 4.0] by @cosmo0920 in #10857
• lib: updates for cmetrics and monkey (v4.0 backport) by @edsiper in #10871
• utils: relax proxy URL parsing by @edsiper in #10891
• upstream: Move clearing TLS session from prepare phase to destroy phase [Backport to 4.0] by @cosmo0920 in #10895
• in_storage_backlog: fix use-after-free when segregating chunk [Backport to 4.0] by @cosmo0920 in #10896

Full Changelog: v4.0.9...v4.0.10

Fluent Bit 4.0.9

https://fluentbit.io/announcements/v4.0.9/

What's Changed

• release: update to 4.0.9 by @cosmo0920 in #10772
• in_tail: fix memory leak when using generic unicode conversion (backport #10781) by @pwhelan in #10785
• cmake: explicitly disable FLB_UNICODE_ENCODER when FLB_USE_SIMDUTF is disabled. [Backport to 4.0] by @cosmo0920 in #10792
• pipe: Specify linger option for flb_pipes which is build on top of socketpairs on Windows [Backport to 4.0] by @cosmo0920 in #10791
• cmake: backport #10778 and #10786 to 4.0. by @pwhelan in #10795
• engine: fix busy chunks on reload. [Backpoprt to 4.0] by @cosmo0920 in #10806
• opentelemetry: remove enforcement of timestamp fields for logs (backport v4.0) by @edsiper in #10814
• http_client: add response and read idle timeouts (backport v4.0) by @edsiper in #10811
• http_client: fix incomplete error handling in flb_http_do() (backport v4.0) by @edsiper in #10812
• opentelemetry: fix handling of numeric attributes (backport v4.0) by @edsiper in #10816
• downstream: implement pause and resume functionality [Backport to 4.0] by @cosmo0920 in #10829
• network: fix strerror_r detection for musl [Backport to 4.0] by @cosmo0920 in #10830

Full Changelog: v4.0.8...v4.0.9

Fluent Bit 4.0.8

https://fluentbit.io/announcements/v4.0.8/

What's Changed

• engine: fix endless loop on reload [backport to 4.0] by @cosmo0920 in #10709
• release: update to 4.0.8 by @cosmo0920 in #10711
• input_metrics: discard cmetrics with no series (backport v4.0) by @edsiper in #10736
• in_node_exporter_metrics: add Linux sockstat collector (backport v4.0) by @edsiper in #10737
• in_node_exporter_metrics: add Linux hwmon collector (backport v4.0) by @edsiper in #10738
• pack: fix token count regression in JSON tokenizer and remove parser reset (backport 4.0) by @edsiper in #10740
• in_kafka: improve offset commit timing to avoid data loss in edge cases (backport v4.0) by @edsiper in #10741
• in_node_exporter_metrics: add new option 'path.rootfs' (backport v4.0) by @edsiper in #10739
• out_azure_kusto: Added workload identity support (backport v4.0) by @edsiper in #10742
• out_datadog: task_arn now correctly mapped to full arn (backport v4.0) by @edsiper in #10744
• out_cloudwatch: add entity support and remove unnecessary log content (backport v4.0) by @edsiper in #10743
• out_kinesis_firehose: introduce port parameter (backport v4.0) by @edsiper in #10745
• dockerfiles: windows: update to ltsc 2025 and fix layers by @edsiper in #10764
• out_es: add apikey to available auth types by @edsiper in #10765
• lib: chunkio: update to 98988d25 by @edsiper in #10763
• in_calyptia_fleet: fleet config fetch ignores older-timestamped files by @edsiper in #10762
• opentelemetry: logs: fix packaging length for trace_id and span_id (backport 4.0) by @edsiper in #10768
• workflows: Retrieve the actual target image with tag [Backport to 4.0] by @cosmo0920 in #10769
• workflows: Add sudo for a cleanup step by @cosmo0920 in #10770

Full Changelog: v4.0.7...v4.0.8

Fluent Bit 4.0.7

https://fluentbit.io/announcements/v4.0.7/

What's Changed

• release: update to 4.0.7 by @cosmo0920 in #10694
• in_windows_exporter_metrics: Handle DST more precisely with dynamic timezone verison of functions [Backport to 4.0] by @cosmo0920 in #10701
• opentelemetry: general fixes for log handling [Backport to 4.0] by @cosmo0920 in #10702

Full Changelog: v4.0.6...v4.0.7