通过logstash可以将日志过滤
（即取到http_request值，如下）
42.62.45.23 - - [15/Jun/2015:10:27:33 +0800] "GET /www/delivery/aj.php?id=29 HTTP/1.1" 200 10309 "-" "-" "10.72.16.60:80" 0.111
72.62.45.23 - - [15/Jun/2015:10:27:33 +0800] "GET /www/delivery/jo.php?id=29 HTTP/1.1" 200 10309 "-" "-" "10.72.16.60:80" 0.111现在要对红色框内切分出来
不难看出，红色框内链接是以问号为分割点的，
这里我们用到logstash mutate split
官方说明如下
Synopsis
This is what it might look like in your config file:
filter {
split {
add_field => ... # hash (optional), default: {}
add_tag => ... # array (optional), default: []
field => ... # string (optional), default: "message"
remove_field => ... # array (optional), default: []
remove_tag => ... # array (optional), default: []
terminator => ... # string (optional), default: "\n"
}
}
按语法进行切分
mutate {
split => ["http_request" ,"?"] #http_request以问号为切割点
add_field => ["request_url", "%{http_request[0]}"] #取出数组中第一个值，同时添加request_url为新的field
}重新启动logstash，
可以看出，我们的日志已经成功切分出来了
