Logstash ELK Grok模式-nginx错误日志的参数数量可变
我试图建立一个GROK模式来捕获nginx错误日志,但是内容是可变的。例如,如果没有referer,它只会将该值保留在行尾:Logstash ELK Grok模式-nginx错误日志的参数数量可变,logstash,elastic-stack,logstash-grok,Logstash,Elastic Stack,Logstash Grok,我试图建立一个GROK模式来捕获nginx错误日志,但是内容是可变的。例如,如果没有referer,它只会将该值保留在行尾: 2018/08/30 09:30:32 [error] 84843#0: *24414687217 open() "/www/sites/js/draw.js" failed (2: No such file or directory), client: 172.68.211.134, server: www.example.com, request: "GET /bun
2018/08/30 09:30:32 [error] 84843#0: *24414687217 open() "/www/sites/js/draw.js" failed (2: No such file or directory), client: 172.68.211.134, server: www.example.com, request: "GET /bundles/app/js/draw.js HTTP/1.1", host: "www.example.com"
但如果真的有,它会补充说:
, referrer: "https://www.example.com/de/member/foo"
我当前的GROK模式适用于具有推荐人的行,但我如何让它处理这两个示例
%{DATA:nginx_error.time} \[%{DATA:nginx_error.level}\] %{NUMBER:nginx_error.pid}#%{NUMBER:nginx_error.tid}: (\*%{NUMBER:nginx_error.connection_id} )?%{GREEDYDATA:nginx_error.message}, client: %{IP:nginx_error.client}, server: %{HOSTNAME:nginx_error.server}, request: \"%{DATA:nginx_error.request}\", host: \"%{HOSTNAME:nginx_error.host}\", referrer: \"%{URI:nginx_error.referrer}\"
您可以使用
?
,例如,(,referer:)?(\“{URI:referer}\”)?
请注意,括号(…)中的数据称为捕获组
你的模式就会变成
%{DATA:nginx_error.time} \[%{DATA:nginx_error.level}\] %{NUMBER:nginx_error.pid}#%{NUMBER:nginx_error.tid}: (\*%{NUMBER:nginx_error.connection_id} )?%{GREEDYDATA:nginx_error.message}, client: %{IP:nginx_error.client}, server: %{HOSTNAME:nginx_error.server}, request: \"%{DATA:nginx_error.request}\", host: \"%{HOSTNAME:nginx_error.host}\"(, referrer: )?(\"%{URI:referrer}\")?