spring – 将特定的MDC字段附加到logstash日志中

我正在尝试将自定义字段添加到logback- spring.xml中的logstash appender中,如下所示：

<?xml version="1.0" encoding="UTF-8"?>
<configuration>
<appender name="stash" class="net.logstash.logback.appender.LogstashSocketAppender">
        <host>xx.xx.xx.xx</host>
        <port>xxxxx</port>
        <encoder class="net.logstash.logback.encoder.LogstashEncoder">
            <includeMdcKeyName>myField</includeMdcKeyName>
        </encoder>
</appender>

<root level="info">
    <appender-ref ref="stash" />
</root>

</configuration>

它给了我错误：

Exception in thread “main” java.lang.IllegalStateException: Logback configuration error detected:
ERROR in ch.qos.logback.core.joran.spi.Interpreter@34:71 – no applicable action for [encoder], current ElementPath is [[configuration][appender][encoder]]

当我尝试使用控制台appender并尝试打印该字段时,就像下面的示例一样.

<layout>
      <Pattern>%-4r [%thread] %-5level My Field: [%X{myField:--}] %msg%n</Pattern>
</layout>

你能告诉我我用udp appender做错了什么吗？谢谢你的建议.

最佳答案

你使用的是 UDP appender,它没有编码器.您应该使用 TCP Appender(LogstashTcpSocketAppender而不是LogstashSocketAppender)：

<appender name="stash" class="net.logstash.logback.appender.LogstashTcpSocketAppender">
    <destination>xx.xx.xx.xx:xxxxx</destination>
    <encoder class="net.logstash.logback.encoder.LogstashEncoder">
        <includeMdcKeyName>myField</includeMdcKeyName>
    </encoder>
</appender>

看看我创建的一个演示项目here.

This code(Kotlin)：

MDC.put("mdc", "so53558553")

LOG.warn("Warn")

像这样的logback-spring.xml：

<appender name="logstash" class="net.logstash.logback.appender.LogstashTcpSocketAppender">
    <destination>localhost:5000</destination>
    <encoder class="net.logstash.logback.encoder.LogstashEncoder">
        <includeMdcKeyName>mdc</includeMdcKeyName>
    </encoder>
</appender>

在Logstash中生成此类记录：

{
    "level_value" => 30000,
            "mdc" => "so53558553",
           "port" => 35450,
    "logger_name" => "by.dev.madhead.playgrounds.so53558553.SpringBootConsoleApplication",
           "host" => "172.17.0.1",
       "@version" => "1",
     "@timestamp" => 2018-12-03T01:16:28.793Z,
    "thread_name" => "main",
        "message" => "Warn",
          "level" => "WARN"
}

<code>mdc</code> field

如您所见,Logstash将mdc值视为LoggingEvent中的一个字段.

编辑

由于ELK配置错误,您可能无法在Kibana看到您的字段.我正在粘贴我的Logstash pipiline配置(/etc/logstash/conf.d/01-input.conf)仅供参考(这是非常基本的)：

input {
    tcp {
        port => 5000
        codec => json_lines
    }
}

output {
    elasticsearch {
        hosts => [ "localhost:9200" ]
        index => "logback-%{+YYYY.MM.dd}"
    }
}

然后我使用logback- *模式在Kibana中配置了日志：

Create index pattern-01
Create index pattern-02