入力 echo '{"test":"test", "date":"'```date "+%Y-%m-%dT%T"```'"}' | fluent-cat -h <host_ip> -p 24224 debug.test 出力 curl -X POST 'http://localhost:9200/fluentd/_refresh' && curl -XGET http://localhost:9200/fluentd/_search?sort=date:desc