# \[logstash.licensechecker.licensereader\] Unable to retrieve Elasticsearch cluster info. {:message=\>"No Available connections", :exception=\>LogStash::Outputs::ElasticSearch::HttpClient::Pool::NoConnectionAvailableError}

**URL:** <https://discuss.elastic.co/t/logstash-licensechecker-licensereader-unable-to-retrieve-elasticsearch-cluster-info-message-no-available-connections-exception-logstash-noconnectionavailableerror/348421>\
**Category:** Logstash\
**Tags:** docker\
**Created:** [December 1, 2023, 10:24am UTC](https://discuss.elastic.co/t/logstash-licensechecker-licensereader-unable-to-retrieve-elasticsearch-cluster-info-message-no-available-connections-exception-logstash-noconnectionavailableerror/348421 "2023-12-01T10:24:43Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![Abdeljalil\_El\_Yousso](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/abdeljalil_el_yousso/32/120026_2.png) [@Abdeljalil\_El\_Yousso](https://discuss.elastic.co/u/Abdeljalil_El_Yousso)\
**Post date:** [December 1, 2023, 10:24am UTC](https://discuss.elastic.co/t/logstash-licensechecker-licensereader-unable-to-retrieve-elasticsearch-cluster-info-message-no-available-connections-exception-logstash-noconnectionavailableerror/348421/1 "2023-12-01T10:24:44Z")

</div>

Hey , im using elasticsearch 8.10 on docker , on a debian server , i cannot connect my logstash instance running also on dokcer , on a debian environement .  
i receive 3 error message

WARN ][logstash.licensechecker.licensereader] Attempted to resurrect connection to dead ES instance, but got an error {:url=\>"[https://IP:9200/](https://IP:9200/)", :exception=\>LogStash::Outputs::Elasticsearch::HttpClient::Pool::HostUnreachableError, :message=\>"Elasticsearch Unreachable: [[https://IP:9200/](https://IP:9200/)][Manticore::ConnectTimeout] Connect to IP:9200 [/IP] failed: Connect timed out"}

[WARN][logstash.licensechecker.licensereader] Marking url as dead. Last error: [LogStash::Outputs::Elasticsearch::HttpClient::Pool::HostUnreachableError] Elasticsearch Unreachable: [https://:9200/][Manticore::ConnectTimeout] Connect to :9200 [/] failed: Connect timed out {:url=\>https://:9200/, :error\_message=\>"Elasticsearch Unreachable: [https://:9200/][Manticore::ConnectTimeout] Connect to :9200 [/] failed: Connect timed out", :error\_class=\>"LogStash::Outputs::Elasticsearch::HttpClient::Pool::HostUnreachableError"}

[ERROR][logstash.licensechecker.licensereader] Unable to retrieve Elasticsearch cluster info. {:message=\>"No Available connections", :exception=\>LogStash::Outputs::Elasticsearch::HttpClient::Pool::NoConnectionAvailableError}

[ERROR][logstash.licensechecker.licensereader] Unable to retrieve license information from license server {:message=\>"No Available connections"}

[ERROR][logstash.monitoring.internalpipelinesource] Failed to fetch X-Pack information from Elasticsearch. This is likely due to failure to reach a live Elasticsearch cluster.

Im using the certificates generated while installing elk , for information kibana and elasticsearch are connected

---

<div class="post-metadata">

**Author:** ![stephenb](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/stephenb/32/40856_2.png) [@stephenb](https://discuss.elastic.co/u/stephenb)\
**Post date:** [December 2, 2023, 5:37am UTC](https://discuss.elastic.co/t/logstash-licensechecker-licensereader-unable-to-retrieve-elasticsearch-cluster-info-message-no-available-connections-exception-logstash-noconnectionavailableerror/348421/2 "2023-12-02T05:37:47Z")

</div>

Hi @Abdeljalil_El_Yousso

So logstash cant connect...

But you did not provide any other information...

Are Elasticsearch and Logstash separate containers or same compose?

You did not share your logstash configuration so hard to tell.

Could be connectivity  
Could be using wrong / container IP  
could be certs  
Could be authentication

You need to share more...

---

<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:** [December 30, 2023, 5:38am UTC](https://discuss.elastic.co/t/logstash-licensechecker-licensereader-unable-to-retrieve-elasticsearch-cluster-info-message-no-available-connections-exception-logstash-noconnectionavailableerror/348421/3 "2023-12-30T05:38:15Z")

</div>

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