# I get this error in Logstash coming even when the pipeline is working just fine. What could it be?

**URL:** <https://discuss.elastic.co/t/i-get-this-error-in-logstash-coming-even-when-the-pipeline-is-working-just-fine-what-could-it-be/340531>\
**Category:** Logstash\
**Tags:** docker\
**Created:** [August 10, 2023, 9:16am UTC](https://discuss.elastic.co/t/i-get-this-error-in-logstash-coming-even-when-the-pipeline-is-working-just-fine-what-could-it-be/340531 "2023-08-10T09:16:47Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![SamuelSMendes](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/samuelsmendes/32/104246_2.png) [@SamuelSMendes](https://discuss.elastic.co/u/SamuelSMendes)\
**Post date:** [August 10, 2023, 9:16am UTC](https://discuss.elastic.co/t/i-get-this-error-in-logstash-coming-even-when-the-pipeline-is-working-just-fine-what-could-it-be/340531/1 "2023-08-10T09:16:47Z")

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```auto
[2023-08-10T06:10:02,974][ERROR][logstash.licensechecker.licensereader] Unable to retrieve license information from license server {:message=>"No Available connections"}

[2023-08-10T06:10:06,662][INFO][logstash.licensechecker.licensereader] Failed to perform request {:message=>"172.19.0.2:9200 failed to respond", :exception=>Manticore::ClientProtocolException, :cause=>#<Java::OrgApacheHttp::NoHttpResponseException: 172.19.0.2:9200 failed to respond>}

[2023-08-10T06:10:06,662][WARN][logstash.licensechecker.licensereader] Attempted to resurrect connection to dead ES instance, but got an error {:url=>"http://elastic:xxxxxx@172.19.0.2:9200/", :exception=>LogStash::Outputs::ElasticSearch::HttpClient::Pool::HostUnreachableError, :message=>"Elasticsearch Unreachable: [http://172.19.0.2:9200/][Manticore::ClientProtocolException] 172.19.0.2:9200 failed to respond"}

```

I have a Stack made up with Docker. So far everything works fine but periodically the Logstash pipeline spits these logs.

It is ingesting the data as it is configured (setted up a jdbc to grab postgresql data every 2minutes.) but in the time between the intervals of the schedule these logs keep coming.

Any idea of where I should look for more info on it?

Thanks in advance.

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<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:** [September 7, 2023, 9:17am UTC](https://discuss.elastic.co/t/i-get-this-error-in-logstash-coming-even-when-the-pipeline-is-working-just-fine-what-could-it-be/340531/2 "2023-09-07T09:17:15Z")

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