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Forum Discussion

aj11's avatar
aj11
Icon for Nimbostratus rankNimbostratus
Mar 03, 2017

Sporadic 404 errors - where is this coming from?

We are getting sporadic 404 errors that show "Powered by Jetty" on a basic 404 page. We have a pool of servers using a VIP hosting a file, but random requests return this 404 page (maybe about 25%)....
application delivery
BIG-IP
LTM
Vijay_E's avatar
Vijay_E
Icon for Cirrus rankCirrus
Mar 06, 2017

You can try a simple iRule to log the 404 responses. Usually, 404 indicates a broken link or a old link that hasn't been transitioned over. Reference link.

when HTTP_RESPONSE {
  if { [HTTP::status] == 404 } {
   log local0. "============================================="
   log local0. "$LogString (response) - status: [HTTP::status]"
   foreach aHeader [HTTP::header names] {
      log local0. "$aHeader: [HTTP::header value $aHeader]"
   }
   log local0. "=============================================" 
   }
}