Fluentd - Bulk index queue is full, retrying in OpenShift

Issue

• Getting ElasticsearchErrorHandler BulkIndexQueueFull messages

• Fluentd won't push to Elasticsearch

  Aug 31 04:07:40 node.example.com dockerd-current[6060]: 2018-08-31 04:07:40 +0200 [warn]: temporarily failed to flush the buffer. next_retry=2018-08-31 04:07:19 +0200 error_    class="Fluent::ElasticsearchErrorHandler::BulkIndexQueueFull" error="Bulk index queue is full, retrying" plugin_id="object:c7c4dc"
  

• Logs missing in Kibana

• Buffer flush took longer time messages

  2019-09-25 01:45:26 -0700 [warn]: buffer flush took longer time than slow_flush_log_threshold: plugin_id="object:3ea119ad7d58" elapsed_time=22.682930512 slow_flush_log_threshold=20.0