# Logstash can't reach elasticsearch **URL:** \ **Category:** Logstash\ **Created:** [October 23, 2020, 8:46am UTC](https://discuss.elastic.co/t/logstash-cant-reach-elasticsearch/253101 "2020-10-23T08:46:24Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![mw\_two](https://avatars.discourse-cdn.com/v4/letter/m/c4cdca/32.png) [@mw\_two](https://discuss.elastic.co/u/mw_two)\ **Post date:** [October 23, 2020, 8:46am UTC](https://discuss.elastic.co/t/logstash-cant-reach-elasticsearch/253101/1 "2020-10-23T08:46:25Z")
Hello, we've following setup: 3x elasticsearch 2x logstash 2x kibana Since two weeks the second logstash-server cannot reach the elasticsearch servers. Following errors can be found in logs: ```auto [2020-10-22T13:17:28,845][ERROR][logstash.outputs.elasticsearch] Attempted to send a bulk request to elasticsearch' but Elasticsearch appears to be unreachable oricsearch Unreachable: [https://logstash_internal:xxxxxx@plmpcssmtsrc001.lan.meyerwerft.de:9200/][Manticore::SocketException] Connection reset", :class=>"LogStash:lient::Pool::HostUnreachableError", :will_retry_in_seconds=>64} [2020-10-22T13:17:33,618][WARN][logstash.outputs.elasticsearch] Restored connection to ES instance {:url=>"https://logstash_internal:xxxxxx@plmpcssmtsrc001.lan.m [2020-10-22T13:18:34,675][WARN][logstash.outputs.elasticsearch] Marking url as dead. Last error: [LogStash::Outputs::ElasticSearch::HttpClient::Pool::HostUnreachchable: [https://logstash_internal:xxxxxx@plmpcssmtsrc002.lan.meyerwerft.de:9200/][Manticore::SocketException] Connection reset {:url=>https://logstash_internal:xrwerft.de:9200/, :error_message=>"Elasticsearch Unreachable: [https://logstash_internal:xxxxxx@plmpcssmtsrc002.lan.meyerwerft.de:9200/][Manticore::SocketExceptionass=>"LogStash::Outputs::ElasticSearch::HttpClient::Pool::HostUnreachableError"} [2020-10-22T13:18:34,675][ERROR][logstash.outputs.elasticsearch] Attempted to send a bulk request to elasticsearch' but Elasticsearch appears to be unreachable oricsearch Unreachable: [https://logstash_internal:xxxxxx@plmpcssmtsrc002.lan.meyerwerft.de:9200/][Manticore::SocketException] Connection reset", :class=>"LogStash:lient::Pool::HostUnreachableError", :will_retry_in_seconds=>64} [2020-10-22T13:18:39,471][WARN][logstash.outputs.elasticsearch] Restored connection to ES instance {:url=>"https://logstash_internal:xxxxxx@plmpcssmtsrc002.lan.m [2020-10-22T13:19:40,565][WARN][logstash.outputs.elasticsearch] Marking url as dead. Last error: [LogStash::Outputs::ElasticSearch::HttpClient::Pool::HostUnreachchable: [https://logstash_internal:xxxxxx@plmpcssmtsrc002.lan.meyerwerft.de:9200/][Manticore::SocketException] Connection reset {:url=>https://logstash_internal:xrwerft.de:9200/, :error_message=>"Elasticsearch Unreachable: [https://logstash_internal:xxxxxx@plmpcssmtsrc002.lan.meyerwerft.de:9200/][Manticore::SocketExceptionass=>"LogStash::Outputs::ElasticSearch::HttpClient::Pool::HostUnreachableError"} [2020-10-22T13:19:40,565][ERROR][logstash.outputs.elasticsearch] Attempted to send a bulk request to elasticsearch' but Elasticsearch appears to be unreachable oricsearch Unreachable: [https://logstash_internal:xxxxxx@plmpcssmtsrc002.lan.meyerwerft.de:9200/][Manticore::SocketException] Connection reset", :class=>"LogStash:lient::Pool::HostUnreachableError", :will_retry_in_seconds=>64} [2020-10-22T13:19:45,401][WARN][logstash.outputs.elasticsearch] Restored connection to ES instance {:url=>"https://logstash_internal:xxxxxx@plmpcssmtsrc002.lan.m [2020-10-22T13:20:46,985][WARN][logstash.outputs.elasticsearch] Marking url as dead. Last error: [LogStash::Outputs::ElasticSearch::HttpClient::Pool::HostUnreachchable: [https://logstash_internal:xxxxxx@plmpcssmtsrc003.lan.meyerwerft.de:9200/][Manticore::SocketException] Connection reset {:url=>https://logstash_internal:xrwerft.de:9200/, :error_message=>"Elasticsearch Unreachable: [https://logstash_internal:xxxxxx@plmpcssmtsrc003.lan.meyerwerft.de:9200/][Manticore::SocketExceptionass=>"LogStash::Outputs::ElasticSearch::HttpClient::Pool::HostUnreachableError"} [2020-10-22T13:20:46,985][ERROR][logstash.outputs.elasticsearch] Attempted to send a bulk request to elasticsearch' but Elasticsearch appears to be unreachable oricsearch Unreachable: [https://logstash_internal:xxxxxx@plmpcssmtsrc003.lan.meyerwerft.de:9200/][Manticore::SocketException] Connection reset", :class=>"LogStash:lient::Pool::HostUnreachableError", :will_retry_in_seconds=>64} ``` I've already cleaned the dead letter queue and did a full cluster restart. Nothing changed. Can you help me find a solution for this? ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [November 20, 2020, 8:46am UTC](https://discuss.elastic.co/t/logstash-cant-reach-elasticsearch/253101/2 "2020-11-20T08:46:30Z")
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