Fluentd Blog

Fluentd v1.16.6 has been released

Hi users!

We have released v1.16.6 on 2024-08-20. ChangeLog is here.

This release is a maintenance release of v1.16 series. In this release, some bugs were fixed with backporting from v1.17.x.

Bug Fixes

yaml_parser: $log_level notation in YAML was supported

In this release, we added a support for $log_level in YAML config file syntax.

In the previous versions, if you used log_level in YAML configuration, it causes a following warning:

[warn]: #0 'log_level' is deprecated parameter name. use '@log_level' instead.

But @log_level is invalid in YAML format. In YAML format, it should be $log_level as same as similar parameter such as $tag and $type, but not supported before.

Since Fluentd v1.16.6, $log_level has been supported! (In v1.17.x, it was supported since v1.17.1)

fluentd command: Fix --plugin (-p) option not to overwrite default value

In this release, we have fixed a bug that fluentd command: --plugin (-p) option could not overwrite default value.

This bug was unexpectedly introduced since v1.16.0.

Now it was reverted to the original behavior.

logger: Fix LoadError with console gem v1.25

In this release, we fixed a LoadError with console gem v1.25 or later.

Since console gem v1.25 or later, it's internal change causes a LoadError in Fluentd. This error breaks existing plugin such as fluent-plugin-prometheus which provides monitoring REST API.

• 500 response when scraping prometheus metrics in kubernetes with istio service mesh

With supporting console gem v1.25 or later, this issue has solved!

Enjoy logging!