Logstash logback 编码器、logstash 转发器和 logstash

Question

接受建议 https://blog.codecentric.de/en/2014/10/log-management-spring-boot-applications-logstash-elastichsearch-kibana/ 我已经设置了 logstash 编码器 + logstash 转发器以将所有内容推送到我的 logstash deamon 并最终在 ElasticSearch 中索引所有内容。

这是我的配置：

logstash.xml

<included>
    <include resource="org/springframework/boot/logging/logback/base.xml"/>

    <property name="FILE_LOGSTASH" value="${LOG_FILE:-${LOG_PATH:-${LOG_TEMP:-${java.io.tmpdir:-/tmp}}/}spring.log}.json"/>
    <appender name="LOGSTASH"
              class="ch.qos.logback.core.rolling.RollingFileAppender">
        <encoder>
            <pattern>${FILE_LOG_PATTERN}</pattern>
        </encoder>
        <file>${FILE_LOGSTASH}</file>
        <rollingPolicy class="ch.qos.logback.core.rolling.FixedWindowRollingPolicy">
            <fileNamePattern>${FILE_LOGSTASH}.%i</fileNamePattern>
        </rollingPolicy>
        <triggeringPolicy
            class="ch.qos.logback.core.rolling.SizeBasedTriggeringPolicy">
            <MaxFileSize>10MB</MaxFileSize>
        </triggeringPolicy>
        <encoder class="net.logstash.logback.encoder.LogstashEncoder">
            <includeCallerInfo>true</includeCallerInfo>                
        </encoder>
    </appender>

    <root level="INFO">
        <appender-ref ref="LOGSTASH"/>
    </root>
</included>

logstash-forwarder.conf

{
    "network": {
        "servers": [
            "logstash:5043"
        ],
        "ssl certificate": "/etc/pki/tls/certs/logstash-forwarder/logstash-forwarder.crt",
        "ssl key": "/etc/pki/tls/private/logstash-forwarder/logstash-forwarder.key",
        "ssl ca": "/etc/pki/tls/certs/logstash-forwarder/logstash-forwarder.crt",
        "timeout": 15
    },
    "files": [
        {
            "paths": [
                "${ENV_SERVICE_LOG}/*.log.json"
            ],
            "fields": {
                "type": "${ENV_SERVICE_NAME}"
            }
        }
    ]
}

logstash.conf

input {
    lumberjack {
        port => 5043

        ssl_certificate => "/etc/pki/tls/certs/logstash-forwarder/logstash-forwarder.crt"
        ssl_key => "/etc/pki/tls/private/logstash-forwarder/logstash-forwarder.key"
    }
}

output {
    elasticsearch { host => "localhost" }
}

一切正常，日志正在保存在 ElasticSearch 中。

此时我希望能够指定要由 ElasticSearch 编制索引的其他字段，例如日志级别。在@message 内容中搜索是否存在错误或警告并没有多大用处。

我该怎么做？我应该更改哪个配置才能使级别在 ElasticSearch 中显示为索引字段？

Answer 1

您正在寻找的是一个 logstash filter，它将在您的索引器上用作输入和输出节的对等体。

有大量过滤器（请参阅 the doc), but you would use grok{} 将正则表达式应用于您的消息字段并提取日志级别。

您没有包含示例消息，但是，给定一个像 "foo 123 bar" 这样的字符串，此模式会将“123”提取到一个名为 loglevel 的整数字段中：

grok {
    match => ["message", "foo %{NUMBER:loglevel:int} bar"]
}

网上有大量关于编写 grok 模式的信息。试试 this one.

Answer 2

logstash config file:
input {
  file {
    path =>  [ "/tmp/web.log" ]
  }
}
filter {
    grok {
        match => [ "%{TIMESTAMP_ISO8601:timestamp} %{LOGLEVEL:severity} %{GREEDYDATA:message}" ]
       }
    }
output {
    elasticsearch {
        host => "127.0.0.1"
        index => "web-%{+YYYY.MM.dd}"
    }
}

您可以使用'add_tag'或'add_field'指定特殊字段

Logstash logback 编码器、logstash 转发器和 logstash

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