# Logstash fails to send events to ES when one instance of cluster stops **URL:** \ **Category:** Logstash\ **Created:** [August 23, 2016, 5:35pm UTC](https://discuss.elastic.co/t/logstash-fails-to-send-events-to-es-when-one-instance-of-cluster-stops/58724 "2016-08-23T17:35:32Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![jcballara](https://avatars.discourse-cdn.com/v4/letter/j/ce7236/32.png) [@jcballara](https://discuss.elastic.co/u/jcballara)\ **Post date:** [August 23, 2016, 5:35pm UTC](https://discuss.elastic.co/t/logstash-fails-to-send-events-to-es-when-one-instance-of-cluster-stops/58724/1 "2016-08-23T17:35:32Z")
Hi, I have this config. Logstash (2.3\*) and ES (2.1.1). Logstash ES output are configured with two ES servers in cluster: hosts =\> ["192.168.48.120","192.168.48.121"] There are 2 ES instances in this IPs configured in a cluster. When I stop one of the servers, Logstash stops to index events while one of the nodes are down. Error that I'm getting from ES: message=\>"Attempted to send a bulk request to Elasticsearch configured at '["[http://192.168.48.120:9200](http://192.168.48.120:9200)", "[http://192.168.48.121:9200](http://192.168.48.121:9200)"]', but an error occurred and it failed! Are you sure you can reach elasticsearch from this machine using the configuration provided?", :error\_message=\>"192.168.48.120:9200 failed to respond", :error\_class=\>"Manticore::ClientProtocolException" Logstash stops to send events to ES. Why I'm getting this error if the other instance of ES is up and running? Thanks! ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [July 6, 2017, 4:41am UTC](https://discuss.elastic.co/t/logstash-fails-to-send-events-to-es-when-one-instance-of-cluster-stops/58724/2 "2017-07-06T04:41:59Z")