[2017-09-16T12:53:21,180][INFO ][logstash.outputs.elasticsearch] Elasticsearch pool URLs updated {:changes=>{:removed=>[], :added=>[http://logstash_system:xxxxxx@elasticsearch:9200/]}} [2017-09-16T12:53:21,182][INFO ][logstash.outputs.elasticsearch] Running health check to see if an Elasticsearch connection is working {:healthcheck_url=>http://logstash_system:xxxxxx@elasticsearch:9200/, :path=>"/"