I have a rails app, and the requests related to assets are to be ignored. If I put the following regex in the ignoreregex setting, it doesnt match any of the lines, whereas, if I put it in the failregex, it correctly identifies the lines.
ignoreregex = (?i)^<HOST> - .* "GET .*/(assets|site_images|site_scripts)/.*
The example of the log line that I would like to count as to be "ignored":
XX.XX.XX.XX - - [30/Aug/2017:02:01:40 +0000] "GET /assets/logo-1a29bc0c23e29be7ca1f27d9fd90d735adb61e94562db7478d9f6c445205da5c.jpg HTTP/1.1" 200 32279 "-" "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/534.34 (KHTML, like Gecko) wkhtmltopdf_linux_amd64 Safari/534.34" "-"
Fail2Ban version: v0.9.3
Ubuntu 16.04.2 LTS