# Logstash secure connection with elastic cluster
**URL:** https://discuss.elastic.co/t/logstash-secure-connection-with-elastic-cluster/224429
**Category:** Logstash
**Created:** [March 20, 2020, 2:18pm UTC](https://discuss.elastic.co/t/logstash-secure-connection-with-elastic-cluster/224429 "2020-03-20T14:18:51Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@jaxvaj](https://discuss.elastic.co/u/jaxvaj)
#### Post date: [March 20, 2020, 2:18pm UTC](https://discuss.elastic.co/t/logstash-secure-connection-with-elastic-cluster/224429/1 "2020-03-20T14:18:51Z")
Hi everybody,
I will start by saying that i am new to ELK, so i am trying to put up and ELK infrastructure with 2 Logstash servers, an elastic cluster with 2 nodes, and 1 kibana server.
I have succeed in securing the communication between the nodes in elastic cluster and also between elastic cluster and kibana via tls certificates generated with elastic-certutil.
But i have a problem with the connectivity between my logstash and my elastic cluster, as you see in my logs down bellow:
Logs from my logstash server:
"Mar 20 15:12:01 p-iot-logstash-01 systemd: Started logstash.
Mar 20 15:12:23 p-iot-logstash-01 systemd: Stopping logstash...
Mar 20 15:12:23 p-iot-logstash-01 systemd: logstash.service: main process exited, code=exited, status=143/n/a
Mar 20 15:12:23 p-iot-logstash-01 systemd: Stopped logstash.
Mar 20 15:12:23 p-iot-logstash-01 systemd: Unit logstash.service entered failed state.
Mar 20 15:12:23 p-iot-logstash-01 systemd: logstash.service failed.
[ERROR][logstash.javapipeline][main] Pipeline aborted due to error {:pipeline\_id=\>"main", :exception=\>#\, Mar 20 15:51:04 p-iot-logstash-01 systemd: Started logstash.
Mar 20 15:51:30 p-iot-logstash-01 logstash: Sending Logstash logs to /var/log/logstash which is now configured via log4j2.properties
Mar 20 15:51:31 p-iot-logstash-01 logstash: [2020-03-20T15:51:31,777][WARN][logstash.config.source.multilocal] Ignoring the 'pipelines.yml' file because modules or command line options are specified
Mar 20 15:51:31 p-iot-logstash-01 logstash: [2020-03-20T15:51:31,954][INFO][logstash.runner] Starting Logstash {"logstash.version"=\>"7.6.1"}
Mar 20 15:51:34 p-iot-logstash-01 logstash: [2020-03-20T15:51:34,611][ERROR][logstash.licensechecker.licensereader] Unable to retrieve license information from license server {:message=\>"Unrecognized SSL message, plaintext connection?"}
Mar 20 15:51:34 p-iot-logstash-01 logstash: [2020-03-20T15:51:34,677][ERROR][logstash.monitoring.internalpipelinesource] Failed to fetch X-Pack information from Elasticsearch. This is likely due to failure to reach a live Elasticsearch cluster.
Mar 20 15:51:36 p-iot-logstash-01 logstash: [2020-03-20T15:51:36,469][INFO][org.reflections.Reflections] Reflections took 59 ms to scan 1 urls, producing 20 keys and 40 values
Mar 20 15:51:36 p-iot-logstash-01 logstash: [2020-03-20T15:51:36,857][INFO][logstash.outputs.elasticsearch][main] Elasticsearch pool URLs updated {:changes=\>{:removed=\>, :added=\>[[https://logstash\_system:xxxxxx@x.x.x.x:9200/](https://logstash_system:xxxxxx@x.x.x.x:9200/), [https://logstash\_system:xxxxxx@x.x.x.x:9200/](https://logstash_system:xxxxxx@x.x.x.x:9200/)]}}
Mar 20 15:51:36 p-iot-logstash-01 logstash: [2020-03-20T15:51:36,959][ERROR][logstash.javapipeline][main] Pipeline aborted due to error {:pipeline\_id=\>"main", :exception=\>#\, :backtrace=\>["/usr/share/logstash/vendor/bundle/jruby/2.5.0/gems/manticore-0.6.4-java/lib/manticore/response.rb:37:in `block in initialize'", "/usr/share/logstash/vendor/bundle/jruby/2.5.0/gems/manticore-0.6.4-java/lib/manticore/response.rb:79:in `call'", "/usr/share/logstash/vendor/bundle/jruby/2.5.0/gems/logstash-output-elasticsearch-10.3.1-java/lib/logstash/outputs/elasticsearch/http\_client/manticore\_adapter.rb:74:in `perform_request'", "/usr/share/logstash/vendor/bundle/jruby/2.5.0/gems/logstash-output-elasticsearch-10.3.1-java/lib/logstash/outputs/elasticsearch/http_client/pool.rb:332:in `perform\_request\_to\_url'", "/usr/share/logstash/vendor/bundle/jruby/2.5.0/gems/logstash-output-elasticsearch-10.3.1-java/lib/logstash/outputs/elasticsearch/http\_client/pool.rb:261:in `health_check_request'", "/usr/share/logstash/vendor/bundle/jruby/2.5.0/gems/logstash-output-elasticsearch-10.3.1-java/lib/logstash/outputs/elasticsearch/http_client/pool.rb:270:in `block in healthcheck!'", "org/jruby/RubyHash.java:1428:in `each'", "/usr/share/logstash/vendor/bundle/jruby/2.5.0/gems/logstash-output-elasticsearch-10.3.1-java/lib/logstash/outputs/elasticsearch/http_client/pool.rb:266:in `healthcheck!'", "/usr/share/logstash/vendor/bundle/jruby/2.5.0/gems/logstash-output-elasticsearch-10.3.1-java/lib/logstash/outputs/elasticsearch/http\_client/pool.rb:382:in `update_urls'", "/usr/share/logstash/vendor/bundle/jruby/2.5.0/gems/logstash-output-elasticsearch-10.3.1-java/lib/logstash/outputs/elasticsearch/http_client/pool.rb:82:in `update\_initial\_urls'", "/usr/share/logstash/vendor/bundle/jruby/2.5.0/gems/logstash-output-elasticsearch-10.3.1-java/lib/logstash/outputs/elasticsearch/http\_client/pool.rb:76:in `start'", "/usr/share/logstash/vendor/bundle/jruby/2.5.0/gems/logstash-output-elasticsearch-10.3.1-java/lib/logstash/outputs/elasticsearch/http_client.rb:302:in `build\_pool'", "/usr/share/logstash/vendor/bundle/jruby/2.5.0/gems/logstash-output-elasticsearch-10.3.1-java/lib/logstash/outputs/elasticsearch/http\_client.rb:64:in `initialize'", "/usr/share/logstash/vendor/bundle/jruby/2.5.0/gems/logstash-output-elasticsearch-10.3.1-java/lib/logstash/outputs/elasticsearch/http_client_builder.rb:103:in `create\_http\_client'", "/usr/share/logstash/vendor/bundle/jruby/2.5.0/gems/logstash-output-elasticsearch-10.3.1-java/lib/logstash/outputs/elasticsearch/http\_client\_builder.rb:99:in `build'", "/usr/share/logstash/vendor/bundle/jruby/2.5.0/gems/logstash-output-elasticsearch-10.3.1-java/lib/logstash/outputs/elasticsearch.rb:262:in `build\_client'", "/usr/share/logstash/vendor/bundle/jruby/2.5.0/gems/logstash-output-elasticsearch-10.3.1-java/lib/logstash/outputs/elasticsearch/common.rb:27:in `register'", "org/logstash/config/ir/compiler/OutputStrategyExt.java:106:in `register'", "org/logstash/config/ir/compiler/AbstractOutputDelegatorExt.java:48:in `register'", "/usr/share/logstash/logstash-core/lib/logstash/java_pipeline.rb:200:in `block in register\_plugins'", "org/jruby/RubyArray.java:1814:in `each'", "/usr/share/logstash/logstash-core/lib/logstash/java_pipeline.rb:199:in `register\_plugins'", "/usr/share/logstash/logstash-core/lib/logstash/java\_pipeline.rb:501:in `maybe_setup_out_plugins'", "/usr/share/logstash/logstash-core/lib/logstash/java_pipeline.rb:212:in `start\_workers'", "/usr/share/logstash/logstash-core/lib/logstash/java\_pipeline.rb:154:in `run'", "/usr/share/logstash/logstash-core/lib/logstash/java_pipeline.rb:109:in `block in start'"], "pipeline.sources"=\>["/etc/logstash/conf.d/cca.conf"], :thread=\>"#\"}
Mar 20 15:51:36 p-iot-logstash-01 logstash: [2020-03-20T15:51:36,997][ERROR][logstash.agent] Failed to execute action {:id=\>:main, :action\_type=\>LogStash::ConvergeResult::FailedAction, :message=\>"Could not execute action: PipelineAction::Create, action\_result: false", :backtrace=\>nil}
Mar 20 15:51:37 p-iot-logstash-01 logstash: [2020-03-20T15:51:37,360][INFO][logstash.agent
"
This is my config file for logstash:
"input {}
filter {}
output {
elasticsearch {
hosts =\> ["[https://x.x.x.x:9200](https://x.x.x.x:9200)","[https://x.x.x.x:9200](https://x.x.x.x:9200)"]
user =\> 'logstash\_system'
password =\> 'mylogstashpassword'
manage\_template =\> "false"
template\_name =\> "logstash"
ssl =\> true
ssl\_certificate\_verification =\> true
cacert =\> "/etc/logstash/certs/ca.crt"
}
}
"
I have followed this guide during the installation process [https://www.elastic.co/blog/configuring-ssl-tls-and-https-to-secure-elasticsearch-kibana-beats-and-logstash](https://www.elastic.co/blog/configuring-ssl-tls-and-https-to-secure-elasticsearch-kibana-beats-and-logstash)
Thank you very much for your responses in advance
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [April 17, 2020, 2:18pm UTC](https://discuss.elastic.co/t/logstash-secure-connection-with-elastic-cluster/224429/2 "2020-04-17T14:18:52Z")
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