# \[WARN \]\[org.apache.kafka.clients.NetworkClient\] \[Consumer clientId=logstash-0, groupId=logstash\] Connection to node -1 could not be established. Broker may not be available

**URL:** <https://discuss.elastic.co/t/warn-org-apache-kafka-clients-networkclient-consumer-clientid-logstash-0-groupid-logstash-connection-to-node-1-could-not-be-established-broker-may-not-be-available/148571>\
**Category:** Logstash\
**Created:** [September 14, 2018, 7:29am UTC](https://discuss.elastic.co/t/warn-org-apache-kafka-clients-networkclient-consumer-clientid-logstash-0-groupid-logstash-connection-to-node-1-could-not-be-established-broker-may-not-be-available/148571 "2018-09-14T07:29:43Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![aerys\_targaryen](https://avatars.discourse-cdn.com/v4/letter/a/a6a055/32.png) [@aerys\_targaryen](https://discuss.elastic.co/u/aerys_targaryen)\
**Post date:** [September 14, 2018, 7:29am UTC](https://discuss.elastic.co/t/warn-org-apache-kafka-clients-networkclient-consumer-clientid-logstash-0-groupid-logstash-connection-to-node-1-could-not-be-established-broker-may-not-be-available/148571/1 "2018-09-14T07:29:44Z")

</div>

Hello  
Im installing logstash arcsight module to ship logs from smartconnectors to es.  
my command looks like this:  
[root@srv-hostname bin] ./logstash --modules arcsight --setup --path.settings /etc/logstash/   
" -M "arcsight.var.input.smartconnector.bootstrap\_servers=prvt IP:5000"   
-M "arcsight.var.elasticsearch.hosts=localhost:9200"   
-M "arcsight.var.kibana.host=kibana prvt IP:5601""  
It goes fine until

[2018-09-14T12:11:12,752][INFO][org.apache.kafka.common.utils.AppInfoParser] Kafka version : 1.1.0  
[2018-09-14T12:11:12,752][INFO][org.apache.kafka.common.utils.AppInfoParser] Kafka commitId : fdcf75ea326b8e07  
[2018-09-14T12:11:13,194][WARN][org.apache.kafka.clients.NetworkClient] [Consumer clientId=logstash-0, groupId=logstash] Connection to node -1 could not be established. Broker may not be available.  
And the last line goes beyond time.  
Any advise appreciated.

---

<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:** [October 12, 2018, 7:29am UTC](https://discuss.elastic.co/t/warn-org-apache-kafka-clients-networkclient-consumer-clientid-logstash-0-groupid-logstash-connection-to-node-1-could-not-be-established-broker-may-not-be-available/148571/2 "2018-10-12T07:29:44Z")

</div>

This topic was automatically closed 28 days after the last reply. New replies are no longer allowed.