Cookie Persist on Pool Member in iRule?

To optimize, you can use the tcl "switch" command with the "-glob" option to do wildcard matches against the URI:

when HTTP_REQUEST {
  persist cookie insert
  switch -glob [string tolower [HTTP::uri]] {
    "*string1*" -
    "*string2*" {
      if { [active_members Pool_1] >= 1 } {
        pool Pool_1
      } else {
        HTTP::redirect http://maintenance.domain.com
      }
    }
    "*string3*" -
    "*string4*" {
      if { [active_members Pool_2] >= 1 } {
        pool Pool_2
      } else {
        HTTP::redirect http://maintenance.domain.com
      }
    }
...
    default { 
      if { [active_members Pool_all] >= 1 } {
        pool Pool_all
      } else { 
        HTTP::redirect http://maintenance.domain.com
      }
    }
  }
}

Enabling a OneConnect profile on the virtual server should allow smoother transition between pools. Not sure why a session cookie wasn't working as well as a timed cookie, though.

HTH

/deb