Forum Discussion

muzammil_88686's avatar
muzammil_88686
Icon for Nimbostratus rankNimbostratus
Jan 05, 2013

Maintenance Page iRule

Dear Team,   We have one virtual server which consists of two pool members on it.   We would like to deploy the maintenance page on F5 if both the pool members are down.   We have an HTML pa...
application delivery
dev
devops
iRules
nitass's avatar
nitass
Icon for Employee rankEmployee
Jan 09, 2013
since your maintenance page is simple (no image inside), you may try something like this. 

[root@ve10:Active] config  b virtual bar80 list
virtual bar80 {
   snat automap
   pool foo
   destination 172.28.19.252:80
   ip protocol 6
   rules myrule
   profiles {
      http {}
      tcp {}
   }
}
[root@ve10:Active] config  b rule myrule list
rule myrule {
   when RULE_INIT {
  set static::maint_page "Sorry! This site is down for maintenance."
}
when HTTP_REQUEST {
  set maint_prefix "/maintenance.html"

  if { [HTTP::uri] equals "$maint_prefix" } {
    HTTP::respond 200 content $static::maint_page "Content-Type" "text/html" "Connection" "Close"
    return
  }

  if { [active_members [LB::server pool]] < 1 } {
    HTTP::redirect $maint_prefix
  }
}
}

 pool is down

[root@ve10:Active] config  b pool foo|grep -i pool\ member
+-> POOL MEMBER foo/200.200.200.101:80   inactive,down

 bigip responds maintenance page instead

[root@ve10:Active] config  curl -iL http://172.28.19.252
HTTP/1.0 302 Found
Location: /maintenance.html
Server: BigIP
Connection: Keep-Alive
Content-Length: 0

HTTP/1.0 200 OK
Content-Type: text/html
Server: BigIP
Connection: close
Content-Length: 80

Sorry! This site is down for maintenance.