grok | 易学教程

Different structure in a few lines in my log file

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问题 My log file contains different structures in a few lines, and I can not grok it, I don't know if we can test by lines or attribute, I'm still a beginner. if you don't understand me I can give you some examples : input : id=firewall action=bloc type=web id=firewall fw="ER" type=filter id=firewall fw="Az" tz="loo" action=bloc Pattern: id=%{WORD:id} ... I thought to add some patterns between ()?, but i don't know exactly how to do it. you can use this site to test it http://grokdebug.herokuapp

How to create Pattern to parse JSON log in Grok- Prometheus

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问题 I'm trying to match LogMsg in log lines from log file to Prometheus. LOGLINE: {"LogLevel":"INFO","LogMsg":"MESSAGE MSG","Time":"2019-07-19_03:59:15.583"} MATCH : ** what is the pattern ** how to create a pattern to match LogLevel AND LogMsg in grok? 来源： https://stackoverflow.com/questions/57199853/how-to-create-pattern-to-parse-json-log-in-grok-prometheus

Logstash date invalid format

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问题 Trying to parse logs from a rsylog server and insert them to elasticsearch. My incoming logline is Feb 13 01:17:11 xxxx xxx-xxxx_error 2016/02/13 01:17:02 [error] 13689#0: *1956118 open() "xxxxxx" failed (2: No such file or directory), client: xx.xx.xx.xx, server: xxxxx.xx, request: "xxxxxxx HTTP/1.1", host: "xxxxx.xx" I am extracting fields with the following logstash filters: grok { match => { "message" => [ "(?<logstamp>\h{3} \d{2} \d{2}:\d{2}:\d{2}) %{WORD:hostname} (?<source>[^\s]+) (?

关于Logstash中grok插件的正则表达式例子

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关于Logstash中grok插件的正则表达式例子一、前言近期需要对 Nginx 产生的日志进行采集，问了下度娘，业内最著名的解决方案非 ELK ( Elasticsearch , Logstash , Kibana )莫属。 Logstash 负责采集日志， Elasticsearch 负责存储、索引日志， Kibana 则负责通过Web形式展现日志。今天，我要说的是 Logstash ，它可以从多种渠道采集数据，包括控制台标准输入、日志文件、队列等等，只要你能想到，都可以通过插件的方式实现。其中，日志源提供的日志格式可能并不是我们想要插入存储介质里的格式，所以，Logstash里提供了一系列的filter来让我们转换日志。 Grok 就是这些filters里最重要的一个插件，下面我就说说它。二、Grok提供的常用Patterns说明及举例大多数Linux使用人员都有过用正则表达式来查询机器中相关文件或文件里内容的经历，在Grok里，我们也是使用正则表达式来识别日志里的相关数据块。有两种方式来使用正则表达式：直接写正则来匹配用Grok表达式映射正则来匹配在我看来，每次重新写正则是一件很痛苦的事情，为什么不用表达式来一劳永逸呢？特别提示：Grok表达式很像C语言里的宏定义要学习Grok的默认表达式，我们就要找到它的具体配置路径，路径如下： #