Unknown filter plugin 'concat' [fluentd1.3.3 concat2.5.0]

[AkitoZz]

Problem

[error]: config error file="/etc/fluent/fluent.conf" error_class=Fluent::ConfigError error="Unknown filter plugin 'concat'. Run 'gem search -rd fluent-plugin' to find plugins"

Steps to replicate

here is my part config:

<filter kubernetes.**> @type concat key log multiline_end_regexp /\n$/ separator ""

If I comment out this configuration, fluentd words fine, why fluentd can't find this plugin, while other plugins work fine

Expected Behavior

Your environment

• docker linux x86_64 3.10.0-967.27.2.el7.x86_64
• fluentd 1.3.3
• fluent-plugin-concat 2.5.0

[ziaurrehman72]

Getting the same error. Is there any update ??

[ashie]

Please describe the detail how did you install Fluentd & fluent-plugin-concat.