Ruby 2.7 incompatibility

[haidvo]

Hi,

We're running fluentd in K8s, we've recently built fluentd 1.11.2 image with Ruby 2.7 parent image.
When running this image with the exact same configuration we've had prior the upgrade fluentd process was restarted and eventually the container was restarted.
The only immediate fix was to disable Kinesis plugin.
The issue was resolved by building the image with Ruby 2.6 parent image, but, 2.7 is the latest stable release of Ruby.
If needed, we'll share the logs or the config.

K8s fluentd image was built with Ruby 2.7 parent image as well:
https://github.com/kubernetes/kubernetes/blob/master/cluster/addons/fluentd-elasticsearch/fluentd-es-image/Dockerfile#L27

[cosmo0920]

google-protobuf supported Ruby 2.7 on 3.13.0:
https://github.com/awslabs/aws-fluent-plugin-kinesis/blob/master/fluent-plugin-kinesis.gemspec#L58
I have no idea why this plugin does not permit google-protobuf 3.13.0.

[simukappu]

Thank you for your feedback. We've made this plugin v3.2.2 more strict gem pinning to deal with google-protobuf requiring Ruby 2.5+. See #199 for more details. I understand the issue but we have to remove Ruby 2.4 support to permit google-protobuf 3.13.0. We would appreciate any feedback.
Thanks!

[haidvo]

Hi,

Thanks for replying!
Are there plans to drop Ruby 2.4 support?

[mindw]

It would seem Ruby 2.4 is no longer supported:
https://www.ruby-lang.org/en/news/2020/04/05/support-of-ruby-2-4-has-ended/

[cosmo0920]

Our new td-agent package which is td-agent version 4 uses Ruby 2.7 not Ruby 2.4.
And td-agent 3 which uses Ruby 2.4 is now maintenance mode.

[cosmo0920]

See #199 for more details. I understand the issue but we have to remove Ruby 2.4 support to permit google-protobuf 3.13.0. We would appreciate any feedback.

Ah, please wait to drop Ruby 2.4 support.
One of the our Fluentd support service customer wants to use #208 on td-agent 3 series (which runs on Ruby 2.4).

[simukappu]

I found that google-protobuf v3.12.1+ supports Ruby 2.3+. Only v3.12.0 requires Ruby 2.5+.
https://rubygems.org/gems/google-protobuf/versions/3.12.0-universal-darwin
https://rubygems.org/gems/google-protobuf/versions/3.12.1-universal-darwin

The latest v4.0.0.rc2 also supports Ruby 2.3+
https://rubygems.org/gems/google-protobuf/versions/4.0.0.rc.2-universal-darwin

Therefore, we will remove google-protobuf gem pinning for the next fluent-plugin-kinesis version release.

[simukappu]

We've just published as v3.3.0.
https://rubygems.org/gems/fluent-plugin-kinesis/versions/3.3.0

@haidah01
The new v3.3.0 passes the test with Ruby 2.7. Can you try this plugin with fluentd 1.11.2 image with Ruby 2.7 again?

[haidvo]

I can confirm that it works with Ruby 2.7 and fluentd 1.11.4.
Thanks! 👍

[simukappu]

Great👍 Closing this issue.
Thank you!