elasticsearch Logstash:TypeError:没有将nil隐式转换为字符串

我是ELK的新手，尝试将第三方RESTAPI输入Logstash，以便将数据输入其中。我得到了TypeError：没有将nil隐式转换为字符串

我正在使用http_input_poller插件提供数据。下面是它的配置

input {
  http_poller {
    urls => {
      test1 => "https://example.com/api/now/table/sys_user?sysparm_limit=1"
    }
    request_timeout => 60
    # Supports "cron", "every", "at" and "in" schedules by rufus scheduler
    schedule => { cron => "* * * * * UTC"}
    codec => "json"
    # A hash of request metadata info (timing, response headers, etc.) will be sent here
    metadata_target => "http_poller_metadata"
  }
}

output {
  stdout {
    codec => rubydebug
  }
}

我正在使用此命令运行

sudo./logstash-f logstash\u http\u poller.conf--path.settings/etc/logstash/--path.data

我收到了这个错误消息

masteradmin@usr:/usr/share/logstash/bin$ sudo ./logstash -f logstash_http_poller.conf --path.settings /etc/logstash/ --path.data
[FATAL] 2020-03-18 07:07:07.377 [main] runner - An unexpected error occurred! {:error=>#<TypeError: no implicit conversion of nil into String>, :backtrace=>["org/jruby/RubyFileTest.java:96:in `directory?'", "org/jruby/RubyFileTest.java:88:in `directory?'", "/usr/share/logstash/logstash-core/lib/logstash/settings.rb:510:in `block in value'", "org/jruby/RubyKernel.java:1906:in `tap'", "/usr/share/logstash/logstash-core/lib/logstash/settings.rb:509:in `value'", "/usr/share/logstash/logstash-core/lib/logstash/settings.rb:97:in `get_value'", "/usr/share/logstash/logstash-core/lib/logstash/environment.rb:94:in `block in LogStash'", "/usr/share/logstash/logstash-core/lib/logstash/settings.rb:167:in `block in post_process'", "org/jruby/RubyArray.java:1814:in `each'", "/usr/share/logstash/logstash-core/lib/logstash/settings.rb:166:in `post_process'", "/usr/share/logstash/logstash-core/lib/logstash/util/settings_helper.rb:26:in `post_process'", "/usr/share/logstash/logstash-core/lib/logstash/runner.rb:246:in `execute'", "/usr/share/logstash/vendor/bundle/jruby/2.5.0/gems/clamp-0.6.5/lib/clamp/command.rb:67:in `run'", "/usr/share/logstash/logstash-core/lib/logstash/runner.rb:242:in `run'", "/usr/share/logstash/vendor/bundle/jruby/2.5.0/gems/clamp-0.6.5/lib/clamp/command.rb:132:in `run'", "/usr/share/logstash/lib/bootstrap/environment.rb:73:in `<main>'"]}
[ERROR] 2020-03-18 07:07:07.386 [main] Logstash - java.lang.IllegalStateException: Logstash stopped processing because of an error: (SystemExit) exit

masteradmin@usr：/usr/share/logstash/bin$sudo./logstash-f logstash_http_poller.conf--path.settings/etc/logstash/--path.data
[致命]2020-03-18 07:07:07.377[主要]跑步者-发生意外错误！{：error=>#，：backtrace=>[“org/jruby/RubyFileTest.java:96:in`directory？”，“org/jruby/RubyFileTest.java:88:in`directory？”，“/usr/share/logstash/logstash core/lib/logstash/settings.rb:510:in`block in value'，“org/jruby/RubyKernel.java:1906:in`tap'”，/usr/share/logstash/logstash core/lib/logstash/settings.rb:509:in`value'，“/usr/share/logstash/logstash core/lib/logstash/settings.rb:97:in‘get_value’”、/usr/share/logstash/logstash core/lib/logstash/environment.rb:94:in‘block in logstash’、/usr/share/logstash/logstash core/lib/logstash/settings.rb:167:in‘block in in post_进程’、‘org/jruby/RubyArray.java:1814:in‘each’”/usr/share/logstash/logstash core/lib/logstash/settings.rb:166:in‘post_process’，“/usr/share/logstash/logstash core/lib/logstash/util/settings_helper.rb:26:in‘post_process’，”/usr/share/logstash/logstash core/lib/logstash/runner.rb:246:in‘execute’，”/usr/share/logstash/vendor/bundle/jruby/2.5.0/gems/clamp-0.6.5/lib/clamp/command.rb:67:in‘run’，/usr/share/logstash/logstash-core/lib/logstash/runner.rb:242:in‘run’，/usr/share/logstash/vendor/bundle/jruby/2.5.0/gems/clamp-0.6.5/lib/clamp/command.rb:132:in‘run’，/usr/share/logstash/logstash/lib/bootstrap/environment.73:in‘run’。”
[错误]2020-03-18 07:07:07.386[主要]日志存储-java.lang.IllegalStateException:日志存储由于错误而停止处理：（SystemExit）退出

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需要帮助。谢谢。

在对错误消息进行一些分析之后，我坚信发生此错误的原因是未指定

--path.data

参数的值

• TypeError:没有将nil隐式转换为字符串>

  可能表明nil（不存在的路径）无法转换为字符串（路径/参数值必须是什么）

• RubyFileTest.java:96:in``目录？'

  表示ruby类需要一个有效的目录

因此，请在run命令中为参数指定一个值，并告诉我这是否解决了问题

编辑：

---

path.data参数不是必需的，因此可以将其删除。默认位置是提取二进制文件的目录中的数据文件夹。（参见参考）

我的建议成功了吗？请给我一些反馈！我尝试过用一些随机文件路径给--path.data，然后关闭logstash，这对我来说很有效。谢谢，不客气。很高兴我能帮助你。