有些日志(比如apache)不像nginx那样支持json可以使用grok插件

grok利用正则表达式就行匹配拆分

预定义的位置在

/opt/logstash/vendor/bundle/jruby/1.9/gems/logstash-patterns-core-2.0.5/patterns

apache的在文件grok-patterns

logstash实战filter插件之grok(收集apache日志)-LMLPHP

查看官方文档

https://www.elastic.co/guide/en/logstash/current/plugins-filters-grok.html

vim /etc/logstash/conf.d/grok.conf

input{
stdin{}
} filter {
grok {
match => { "message" => "%{IP:client} %{WORD:method} %{URIPATHPARAM:request} %{NUMBER:bytes} %{NUMBER:duration}" }
}
} output{
stdout{
codec => rubydebug
}
}

  启动

/opt/logstash/bin/logstash -f grok.conf

标准输入文本 55.3.244.1 GET /index.html 15824 0.043

输出

logstash实战filter插件之grok(收集apache日志)-LMLPHP

PS:grok非常影响性能,不灵活,可以使用logstash - redis - python -es

vim apache_grok.conf

input{
stdin{}
} filter{
grok{
match => { "message" => "%{HTTPD_COMBINEDLOG}" }
}
} output{
stdout{
codec => rubydebug
}
}

  

运行输出

/opt/logstash/bin/logstash -f apache_grok.conf

logstash实战filter插件之grok(收集apache日志)-LMLPHP

05-11 11:13