# Unable to retrieve license information from license server {:message=\>"No Available connections"} **URL:** \ **Category:** Logstash\ **Created:** [April 12, 2022, 5:25am UTC](https://discuss.elastic.co/t/unable-to-retrieve-license-information-from-license-server-message-no-available-connections/302175 "2022-04-12T05:25:31Z")\ **Posts on this page:** 9\ **Page:** 1
**Author:** ![sahir](https://avatars.discourse-cdn.com/v4/letter/s/7cd45c/32.png) [@sahir](https://discuss.elastic.co/u/sahir)\ **Post date:** [April 12, 2022, 5:25am UTC](https://discuss.elastic.co/t/unable-to-retrieve-license-information-from-license-server-message-no-available-connections/302175/1 "2022-04-12T05:25:31Z")
Hello team, I'm new to Logstash when im trying to run a logstash i getting the error like this anyone can you please look on it. ```auto [2022-04-11T19:19:07,223][ERROR][logstash.licensechecker.licensereader] Unable to retrieve license information from license server {:message=>"No Available connections"} [2022-04-11T19:19:07,528][WARN][logstash.licensechecker.licensereader] Attempted to resurrect connection to dead ES instance, but got an error {:url=>"http://elasticsearch:9200/", :exception=>LogStash::Outputs::ElasticSearch::HttpClient::Pool::HostUnreachableError, :message=>"Elasticsearch Unreachable: [http://elasticsearch:9200/][Manticore::ResolutionFailure] elasticsearch: Name or service not known"} ``` type or paste code here ```auto ``` ---
**Author:** ![TimV](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/timv/32/13162_2.png) [@TimV](https://discuss.elastic.co/u/TimV)\ **Post date:** [April 12, 2022, 7:54am UTC](https://discuss.elastic.co/t/unable-to-retrieve-license-information-from-license-server-message-no-available-connections/302175/2 "2022-04-12T07:54:52Z")
> [@sahir](#): > > `http://elasticsearch:9200/` You need to replace that URL with the one that reaches Elasticsearch. Do you have an Elasticsearch node running? - If it's on the same machine as Logstash then you want `http://localhost:9200` (or maybe `https://localhost:9200`). - If it's running somewhere else, you'll need to find out the URL to use to connect to it. ---
**Author:** ![sahir](https://avatars.discourse-cdn.com/v4/letter/s/7cd45c/32.png) [@sahir](https://discuss.elastic.co/u/sahir)\ **Post date:** [April 12, 2022, 8:12am UTC](https://discuss.elastic.co/t/unable-to-retrieve-license-information-from-license-server-message-no-available-connections/302175/3 "2022-04-12T08:12:26Z")
@TimV Thanks for your reply. yes Elasticsearch node is running. when i try to change the Elasticsearch URL in Logstash file but its not supporting. I can't overwrite the Logstash file when i change the URL again Logstash file taken a default URL only. Can you please tell me where i have to change the URL in logstash file. ---
**Author:** ![sahir](https://avatars.discourse-cdn.com/v4/letter/s/7cd45c/32.png) [@sahir](https://discuss.elastic.co/u/sahir)\ **Post date:** [April 12, 2022, 9:43am UTC](https://discuss.elastic.co/t/unable-to-retrieve-license-information-from-license-server-message-no-available-connections/302175/4 "2022-04-12T09:43:20Z")
@TimV The default URL is [http://elasticsearch:9200](http://elasticsearch:9200) I changed this to [http://localhost:9200](http://localhost:9200) and other running Elasticsearch URLs also I mentioned but it's not changing it taken a default URL only. ---
**Author:** ![sahir](https://avatars.discourse-cdn.com/v4/letter/s/7cd45c/32.png) [@sahir](https://discuss.elastic.co/u/sahir)\ **Post date:** [April 14, 2022, 12:00pm UTC](https://discuss.elastic.co/t/unable-to-retrieve-license-information-from-license-server-message-no-available-connections/302175/5 "2022-04-14T12:00:32Z")
```auto [WARN] 2022-04-14 11:10:09.084 [Ruby-0-Thread-5: /usr/share/logstash/vendor/bundle/jruby/2.5.0/gems/logstash-output-elasticsearch-10.4.2-java/lib/logstash/outputs/elasticsearch/http_client/pool.rb:241] elasticsearch - Attempted to resurrect connection to dead ES instance, but got an error. {:url=>"https://elastic:xxxxxx@XXX.XXX.XX.XX:9200/", :error_type=>LogStash::Outputs::ElasticSearch::HttpClient::Pool::HostUnreachableError, :error=>"Elasticsearch Unreachable: [https://elastic:xxxxxx@XXX.XXX.XX.XX:9200/][Manticore::ClientProtocolException] PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target"} ``` Hi Team, I'm trying to run the Logstash I'm getting an error like this. It needs a certificate to connect with Elasticsearch can you please help me with how to run the Logstash without using the certificate. ---
**Author:** ![leandrojmp](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/leandrojmp/32/107231_2.png) [@leandrojmp](https://discuss.elastic.co/u/leandrojmp)\ **Post date:** [April 14, 2022, 12:22pm UTC](https://discuss.elastic.co/t/unable-to-retrieve-license-information-from-license-server-message-no-available-connections/302175/6 "2022-04-14T12:22:54Z")
If your Elasticsearch is running with `https` you can't connect to it from logstash without the certificate. You need to check your Elasticsearch configurations, can you share your `elasticsearch.yml` ? ---
**Author:** ![sahir](https://avatars.discourse-cdn.com/v4/letter/s/7cd45c/32.png) [@sahir](https://discuss.elastic.co/u/sahir)\ **Post date:** [April 18, 2022, 6:59am UTC](https://discuss.elastic.co/t/unable-to-retrieve-license-information-from-license-server-message-no-available-connections/302175/7 "2022-04-18T06:59:57Z")
Hello @leandrojmp Thank you for your reply, I passing the Elasticsearch configuration in logstash conf file. I tried with both HTTP and HTTPS Elasticsearch but both the things are showing the same error. ```auto apiVersion: v1 kind: ConfigMap metadata: name: logstash-configmap namespace: kube-system data: logstash.yml: | http.host: "0.0.0.0" path.config: /usr/share/logstash/pipeline logstash.conf: | input { file { path => "/var/log/containers" } } output { stdout { codec => rubydebug } elasticsearch { ilm_enabled => false hosts => ["https://xxx.xxx.xx.xx:9200"] user => 'xxxx' password => 'xxxxxxxxx' index => "logstash-beta-%{+YYYY.MM.dd}" ssl_certificate_verification => false } } ``` ---
**Author:** ![sahir](https://avatars.discourse-cdn.com/v4/letter/s/7cd45c/32.png) [@sahir](https://discuss.elastic.co/u/sahir)\ **Post date:** [April 18, 2022, 7:07am UTC](https://discuss.elastic.co/t/unable-to-retrieve-license-information-from-license-server-message-no-available-connections/302175/8 "2022-04-18T07:07:00Z")
@leandrojmp Thank you for your reply, I deployed a Elasticsearch is running with HTTP but I can't able to connect to it from Logstash. It shows the same error like Elasticsearch unreachable. ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [May 16, 2022, 7:07am UTC](https://discuss.elastic.co/t/unable-to-retrieve-license-information-from-license-server-message-no-available-connections/302175/9 "2022-05-16T07:07:24Z")
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