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Fluentd

v1.19.2Observability
2026年2月19日

Fluentd v1.19.2 delivers critical bug fixes for socket leaks and connection timeouts, with Ruby 4.0 compatibility improvements. Priority fix for production stability issues affecting out_forward and HTTP server plugins.

  • breakingUpdate out_forward configurations for timeout handling

    The out_forward plugin now properly handles connection timeouts to prevent infinite loops. Review your forward output configurations and monitor for any connection behavior changes, especially in high-throughput environments where connection stability is critical.

  • securityUpgrade immediately to fix socket leak vulnerability

    HTTP server plugin had socket leaks in POST requests that could lead to resource exhaustion. This is a critical fix for production environments using HTTP input plugins. Update immediately and monitor socket usage after deployment.

  • enhancementPrepare for Ruby 4.0 migration

    This release adds Ruby 4.0 compatibility with updated gem dependencies including ostruct and net-http. Plan your Ruby upgrade path and test this version in staging environments if you're planning to move to Ruby 4.0.

主な変更 (5)

  • Fixed out_forward plugin timeout issue preventing infinite connection loops
  • Resolved socket leaks in HTTP server plugin POST requests
  • Fixed in_tail plugin errors when encountering unreadable files in glob patterns
  • Added Ruby 4.0 compatibility with updated gem dependencies
  • Fixed duplicate config file loading in config_include_dir