Can anyone help? My template in Elasticsearch is ready, but Logstash does not send the index to which it is already created:
ERROR][logstash.outputs.elasticsearch][main] Failed to install template {:message=>"Got response code '400' contacting Elasticsearch at URL 'http://localhost:9200/_template/ecs-logstash'", :exception=>LogStash::Outputs::Elasticsearch::HttpClient::Pool::BadResponseCodeError, :backtrace=>["/usr/share/logstash/vendor/bundle/jruby/2.5.0/gems/logstash-output-elasticsearch-11.6.0-java/lib/logstash/outputs/elasticsearch/http_client/manticore_adapter.rb:84:in perform_request'", "/usr/share/logstash/vendor/bundle/jruby/2.5.0/gems/logstash-output-elasticsearch-11.6.0-java/lib/logstash/outputs/elasticsearch/http_client/pool.rb:324:in perform_request_to_url'", "/usr/share/logstash/vendor/bundle/jruby/2.5.0/gems/logstash-output-elasticsearch-11.6.0-java/lib/logstash/outputs/elasticsearch/http_client/pool.rb:311:in block in perform_request'", "/usr/share/logstash/vendor/bundle/jruby/2.5.0/gems/logstash-output-elasticsearch-11.6.0-java/lib/logstash/outputs/elasticsearch/http_client/pool.rb:398:in with_connection'", "/usr/share/logstash/vendor/bundle/jruby/2.5.0/gems/logstash-output-elasticsearch-11.6.0-java/lib/logstash/outputs/elasticsearch/http_client/pool.rb:310:in perform_request'", "/usr/share/logstash/vendor/bundle/jruby/2.5.0/gems/logstash-output-elasticsearch-11.6.0-java/lib/logstash/outputs/elasticsearch/http_client/pool.rb:318:in block in Pool'", "/usr/share/logstash/vendor/bundle/jruby/2.5.0/gems/logstash-output-elasticsearch-11.6.0-java/lib/logstash/outputs/elasticsearch/http_client.rb:408:in template_put'", "/usr/share/logstash/vendor/bundle/jruby/2.5.0/gems/logstash-output-elasticsearch-11.6.0-java/lib/logstash/outputs/elasticsearch/http_client.rb:85:in template_install'", "/usr/share/logstash/vendor/bundle/jruby/2.5.0/gems/logstash-output-elasticsearch-11.6.0-java/lib/logstash/outputs/elasticsearch/template_manager.rb:29:in install'", "/usr/share/logstash/vendor/bundle/jruby/2.5.0/gems/logstash-output-elasticsearch-11.6.0-java/lib/logstash/outputs/elasticsearch/template_manager.rb:17:in install_template'", "/usr/share/logstash/vendor/bundle/jruby/2.5.0/gems/logstash-output-elasticsearch-11.6.0-java/lib/logstash/outputs/elasticsearch.rb:494:in install_template'", "/usr/share/logstash/vendor/bundle/jruby/2.5.0/gems/logstash-output-elasticsearch-11.6.0-java/lib/logstash/outputs/elasticsearch.rb:318:in finish_register'", "/usr/share/logstash/vendor/bundle/jruby/2.5.0/gems/logstash-output-elasticsearch-11.6.0-java/lib/logstash/outputs/elasticsearch.rb:283:in block in register'", "/usr/share/logstash/vendor/bundle/jruby/2.5.0/gems/logstash-output-elasticsearch-11.6.0-java/lib/logstash/plugin_mixins/elasticsearch/common.rb:154:in block in after_successful_connection'"]}