logstash集成elasticsearch報Attempted to resurrect connection to dead ES instance

Attempted to resurrect connection to dead ES instance, but got an error. {:url=>"http://192.168.1.100:9200/", :error_type=>LogStash::Outputs::ElasticSearch::HttpClient::Pool::HostUnreachableError, :error=>"Elasticsearch Unreachable: [http://192.168.1.100:9200/][Manticore::ClientProtocolException] 192.168.1.100:9200 failed to respond"}
[2019-10-15T02:34:14,046][INFO ][logstash.outputs.elasticsearch] Using mapping template from {:path=>nil}

解決：elasticsearch沒有啓動