filter { grok { match => [ "message" , "\s*%{IPORHOST:clientip}\s+\-\s+\-\s+\[%{HTTPDATE:time}\]\s+\"%{WORD:verb}\s+(? (\S+))\?.*\s+HTTP/%{NUMBER:httpversion}\"\s+%{NUMBER:http_status_code}\s+%{NUMBER:bytes}\s+(%{BASE16FLOAT:request_time})\s+%{IPORHOST:remoteip}", "message" ,"\s*%{IPORHOST:clientip}\s+\-\s+\-\s+\[%{HTTPDATE:time}\]\s+\"%{WORD:verb}\s+(? (\S+))\s+HTTP/%{NUMBER:httpversion}\"\s+%{NUMBER:http_status_code}\s+%{NUMBER:bytes}\s+(%{BASE16FLOAT:request_time})\s+%{IPORHOST:remoteip}", "message" ,"\s*%{IPORHOST:clientip}\s+\-\s+\-\s+\[%{HTTPDATE:time}\]\s+\"%{WORD:verb}\s+(? (\S+))\s+HTTP/%{NUMBER:httpversion}\"\s+%{NUMBER:http_status_code}\s+\-\s+(%{BASE16FLOAT:request_time})\s+%{IPORHOST:remoteip}" ] } mutate { convert => [ "request_time", "float"] add_field =>["response_time","%{request_time}"] remove_field =>["request_time"] } date { match => ["time", "dd/MMM/yyyy:HH:mm:ss Z"] } }