Issues

• in_syslog: PRI values above 191 are accepted and the tag gets an empty facility

  bug
  fluent/fluentd#5632 · Filter by author Watson1978 opened on Nov 11, 2026
  1

• parser_syslog: message_format auto parses RFC 3164 messages with an RFC 3339 timestamp as RFC 5424

  bug
  fluent/fluentd#5631 · Filter by author Watson1978 opened on Nov 11, 2026
  1

• parser_syslog: the regexp engine for RFC 5424 can match the header later in the message and corrupt the record

  bug
  fluent/fluentd#5630 · Filter by author Watson1978 opened on Nov 11, 2026
  1

• in_tcp: a parser error drops the other lines in the same read and closes the connection

  bug
  fluent/fluentd#5629 · Filter by author Watson1978 opened on Nov 11, 2026

• out_forward: unacknowledged chunks are resent forever with heartbeat_type none, ignoring retry limits and secondary

  bug
  fluent/fluentd#5619 · Filter by author Watson1978 opened on Nov 9, 2026
  1

• A label looked up at runtime during a graceful reload can keep dropping the events of a tag

  bug
  fluent/fluentd#5594 · Filter by author Watson1978 opened on Nov 5, 2026

• buf_file: queued file chunks keep FDs open until shutdown; resume opens all chunks — EMFILE death spiral on slow output

  bugenhancement
  fluent/fluentd#5494 · Filter by author Syed-Shahidh-Ilhan opened on Sep 10, 2026
  2

• BufferChunkOverflowError inside @ERROR loops forever - no buffer parameter can stop it

  bug
  fluent/fluentd#5462 · Filter by author tarun9715m opened on Aug 4, 2026
  8

• <system> umask / --umask` is not applied to worker-created files under a foreground supervisor

  enhancement
  fluent/fluentd#5435 · Filter by author Watson1978 opened on Jul 14, 2026
  1

• Support secure (encrypted) handling of failed records in secondary outputs

  enhancement
  fluent/fluentd#5216 · Filter by author stagegrowth opened on Jan 6, 2026
  2

• out_forward plugin starts sending invalid packets

  bug
  fluent/fluentd#5166 · Filter by author ChristThePhone opened on Nov 24, 2025
  22

• Fluentd fails to load separate gems with same @type name

  enhancement
  fluent/fluentd#5147 · Filter by author RamHaridas opened on Nov 6, 2025
  2

• zstd compression: stop using the streaming feature

  enhancement
  fluent/fluentd#5111 · Filter by author daipom opened on Sep 29, 2025
  1

• memory leak with pattern not matched error

  enhancementmemory
  fluent/fluentd#4994 · Filter by author Watson1978 opened on Jun 4, 2025
  6

• in_tail plugin will re-read logs from the head, if log is generated less frequently than limit_recently_modified setting

  enhancement
  fluent/fluentd#4843 · Filter by author taehwoi opened on Mar 2, 2025
  1

• https://x.com/fluentd hasn't been updated since Oct 2022

  bug
  fluent/fluentd#4806 · Filter by author ashie opened on Jan 29, 2025
  3

• Update Forward Protocol Specification for zstd compression support

  enhancementpending
  fluent/fluentd#4758 · Filter by author daipom opened on Jan 6, 2025
  48

• enable_input_metrics: inaccurate values

  bug
  fluent/fluentd#4717 · Filter by author daipom opened on Nov 27, 2024
  3

• Logs missing during heavy log volume

  enhancement
  fluent/fluentd#4693 · Filter by author jicowan opened on Nov 3, 2024
  27

• Replace WEBrick because it is no longer recommended for production use

  enhancement
  fluent/fluentd#4648 · Filter by author sparrowt opened on Sep 26, 2024
  14

• Compatibility issues with fluentd plugins

  plugin issuework-in-progress
  fluent/fluentd#4645 · Filter by author PranavBhatSF opened on Sep 25, 2024
  2

  

• Add Fuzz-testing

  work-in-progress
  fluent/fluentd#4614 · Filter by author harshitasao opened on Aug 25, 2024
  3

• warning: literal string will be frozen in the future since Ruby 3.4.0

  pending
  fluent/fluentd#4585 · Filter by author Watson1978 opened on Aug 9, 2024
  1

• Error event logs should include plugin id

  enhancement
  fluent/fluentd#4567 · Filter by author DavidKnacker opened on Jul 26, 2024
  20

• Bind to all network interfaces for both IPv4 and IPv6

  enhancementipv6
  fluent/fluentd#4558 · Filter by author inistor opened on Jul 15, 2024
  16