Logstash忽略配置文件或看不到日志文件

Question

我有一个'use strict'; import React from 'react'; import ReactDOM from 'react-dom'; import Hello from './component.jsx'; ReactDOM.render(<Hello />,document.getElementById('app')); 文件，看起来像这样

/etc/logstash/conf.d

然后我就像这样开始我的Logstash

input {

  file {
        path => "/tmp/test_messages.txt"
        start_position => "beginning"
    }

}

output {
    stdout { codec => rubydebug }
}

收到消息

/opt/logstash/bin/logstash -f /etc/logstash/conf.d

但是没有任何反应。当我做的时候

Settings: Default pipeline workers: 4
Pipeline main started

logstash不会输出任何内容。怎么了？