# Logstash stops reading from Kafka

**URL:** <https://discuss.elastic.co/t/logstash-stops-reading-from-kafka/153923>\
**Category:** Logstash\
**Created:** [October 25, 2018, 6:50am UTC](https://discuss.elastic.co/t/logstash-stops-reading-from-kafka/153923 "2018-10-25T06:50:32Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![jibsonline](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/jibsonline/32/63154_2.png) [@jibsonline](https://discuss.elastic.co/u/jibsonline)\
**Post date:** [October 25, 2018, 6:50am UTC](https://discuss.elastic.co/t/logstash-stops-reading-from-kafka/153923/1 "2018-10-25T06:50:33Z")

</div>

ES:6.3.2  
Logstash: 6.3.2-1

```
input{
    kafka{
       bootstrap_servers => 'kafka-end-point:9092'
       topics => ["topic1", "topic2", "topic3", "topic4","topic5","topic6","topic7","topic8"]
       codec => "json"
       group_id => "logstash-ec2-2"
       consumer_threads => "60"
       decorate_events => true
    }
    }

    filter {
            json {
             source => "message"
             #target => "appmessage"
            }
            json {
             source => "msg"
             #target => "[message][atts]"
      }
    }

    output{
                    elasticsearch {
                           hosts => ["http://es-node:9200"]
                           index => "%{[@metadata][kafka][topic]}-%{+YYYY.MM.dd}"
                           codec => "json"
                           sniffing => false
                    }
    }

```

It runs for some time without issues and then stops reading logs from Kafka

We get this error

```
    [2018-10-25T12:17:08,405][ERROR][logstash.outputs.elasticsearch] Attempted to send a bulk request to elasticsearch' but Elasticsearch appears to be unreachable or down! {:error_message=>"Elasticsearch Unreachable: [http://es-node:9200/][Manticore::ClientProtocolException] es-nodes.production.pm.com:9200 failed to respond", :class=>"LogStash::Outputs::ElasticSearch::HttpClient::Pool::HostUnreachableError", :will_retry_in_seconds=>2}
[2018-10-25T12:17:08,428][WARN][logstash.outputs.elasticsearch] UNEXPECTED POOL ERROR {:e=>#<LogStash::Outputs::ElasticSearch::HttpClient::Pool::NoConnectionAvailableError: No Available connections>}

```

I have verified that elasticsearch is accessible from logstash machines

We have 13 nodes of ES fronted by an ELB(AWS). All of them are healthy

---

<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [November 22, 2018, 6:50am UTC](https://discuss.elastic.co/t/logstash-stops-reading-from-kafka/153923/2 "2018-11-22T06:50:34Z")

</div>

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