Unable to retrieve license information from license server {:message=>"No Available connections"}

Elastic Stack Logstash
1

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.

[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

1 Like
2

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.
3

@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.

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@TimV The default URL is http://elasticsearch:9200 I changed this to http://localhost:9200 and other running Elasticsearch URLs also I mentioned but it's not changing it taken a default URL only.

5 
[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.

6

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 ?

7

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.

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
      }
    }
8

@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.

9

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