Could not connect to a compatible version of Elasticsearch - Opensearch 2.9.0-1 - Logstash OutputPlugin 8.9.0 about logstash-output-opensearch HOT 2 CLOSED

I solved my problem. I realized I missed a very small detail. I was typing "elasticsearch" in the Output section. Actually, I should have corrected that section to "opensearch".

output {
  opensearch {
#  elasticsearch { # old
    hosts => ["https://admin:[email protected]:9200"]
    index => "filebeat-%{+YYYY.MM.dd}"
    ssl_enabled => "true"
    ssl_verification_mode => "none"
  }
}

from logstash-output-opensearch.

The error says you're using logstash-output-elasticsearch-11.15.9-java which is not logstash-output-opensearch. Your filebeat output above should be opensearch, not elasticsearch I think. There's more detailed setup in https://repost.aws/knowledge-center/opensearch-connect-filebeat-logstash. Does this help?

from logstash-output-opensearch.