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

问题描述

我是 ELK 的新手，并试图将第 3 方 REST API 输入到 Logstash 以将数据输入其中。我收到 TypeError: no implicit conversion of nil into string。

我正在使用 http_input_poller 插件来提供数据。这是它的配置。

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_http_poller.conf --path.settings /etc/logstash/ --path.data

我收到此错误消息

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

需要帮忙。谢谢

标签： elasticsearchlogstash

解决方案

在对错误消息进行一些分析之后，我坚信发生此错误是因为没有--path.data指定参数的值。

  • TypeError: no implicit conversion of nil into String>可能表明 nil（不存在的路径）不能转换为字符串（路径/参数值必须是什么）

  • RubyFileTest.java:96:in ``directory?'"表示 ruby​​ 类需要一个有效的目录

因此，请在您的运行命令中为参数指定一个值，并让我知道这是否解决了问题。

编辑：

path.data 参数不是强制性的，因此您可以将其删除。然后，默认位置将是您提取二进制文件的目录中的数据文件夹。（参见https://www.elastic.co/guide/en/logstash/current/dir-layout.html以供参考）

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