Fluentd Blog

Fluentd v1.16.11 has been released

Hi users!

We have released v1.16.11 on 2025-12-09. ChangeLog is here.

This release is expected to be the final release of v1.16 series.

This release will be bundled for upcoming fluent-package LTS version v5.0.9!

Bug Fixes

out_forward: fix issue where could cause output to stop when using <security> and TLS setting together under unstable network environments

This issue occurs when using out_forward with TLS enabled in unstable network environments.

If the communication is lost during the connection process immediately after TLS is established, the out_forward connection process could fall into an infinite loop. As a result, the log output stops completely.

To address this, we have updated the plugin to apply the existing hard_timeout parameter to this connection phase. This introduces a mechanism to interrupt the stuck process via timeout and allow it to recover.

Enjoy logging!

Announcement

The final release of v1.16 series

This release (v1.16.11) is planned to be the final version of the v1.16 series. We strongly recommend upgrading to Fluentd v1.19 series for next long term support.

Please refer to Scheduled support lifecycle announcement about Fluent Package v6.

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