fluent does not resend USR1 to children
..so log rotation becomes more complex
2018-04-17 15:34:17 +0000 [info]: gem 'fluent-plugin-elasticsearch' version '2.4.0' 2018-04-17 15:34:17 +0000 [info]: gem 'fluent-plugin-flowcounter' version '1.3.0' 2018-04-17 15:34:17 +0000 [info]: gem 'fluent-plugin-kafka' version '0.6.5' 2018-04-17 15:34:17 +0000 [info]: gem 'fluent-plugin-multiprocess' version '0.2.2' 2018-04-17 15:34:17 +0000 [info]: gem 'fluent-plugin-prometheus' version '1.0.1' 2018-04-17 15:34:17 +0000 [info]: gem 'fluent-plugin-rewrite-tag-filter' version '2.0.1' 2018-04-17 15:34:17 +0000 [info]: gem 'fluent-plugin-s3' version '1.1.0' 2018-04-17 15:34:17 +0000 [info]: gem 'fluent-plugin-td' version '1.0.0' 2018-04-17 15:34:17 +0000 [info]: gem 'fluent-plugin-td-monitoring' version '0.2.3' 2018-04-17 15:34:17 +0000 [info]: gem 'fluent-plugin-webhdfs' version '1.2.2' 2018-04-17 15:34:17 +0000 [info]: gem 'fluentd' version '1.0.2'