I have enabled SSL security with the password security as well on my Elasticsearch and Kibana. Whole cluster is behaving correctly as I have done this on ELK stack 7.13 as well. But Now while I am doing the same thing on 7.17 , the Elasticsearch akd kibana are connected correctly on the SSL and password basis but logstash is giving the error.
As per my knowledge I have followed the steps correctly but still I am mentioning this here -
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/usr/share/Elasticsearch/bin/Elasticsearch-certutil ca
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bin/Elasticsearch-certutil cert --ca elastic-stack-ca.p12 --dns <DNS_IP> --ip <IP List of ELK Cluster, logstash and Kibana>
Now I have copied cert. to all the E and K nodes both are connected and I can monitor all the nodes on KIBANA.
The certificate is then copied to logstash machine to generate its pem file using openssl.
[2022-04-21T15:39:23,499][WARN ][logstash.outputs.elasticsearch][elastic3] Failed to perform request {:message=>"Unsupported or unrecognized SSL message", :exception=>Manticore::UnknownException, :cause=>javax.net.ssl.SSLException: Unsupported or unrecognized SSL message}
[2022-04-21T15:39:23,499][WARN ][logstash.outputs.elasticsearch][elastic3] Attempted to resurrect connection to dead ES instance, but got an error {:url=>"https://elastic:xxxxxx@192.168.144.90:9200/", :exception=>LogStash::Outputs::ElasticSearch::HttpClient::Pool::HostUnreachableError, :message=>"Elasticsearch Unreachable: [https://192.168.144.90:9200/][Manticore::UnknownException] Unsupported or unrecognized SSL message"}
[2022-04-21T15:41:28,129][ERROR][logstash.licensechecker.licensereader] Unable to retrieve license information from license server {:message=>"No Available connections"}