Nimbostratus
i have a http VIP and am wanting to create a 503 response to the client
when the VIP is unavailable. how does one achieve this? i can see you can assign
monitors to pools but nothing jumps about how an irule or action is invoked
when the http monitor is down.
your help appreciated.
m
Nimbostratus
I have just uploaded an iRule that improves on this behavior, because the Fallback Host behavior is not ideal. See http://devcentral.f5.com/wiki/default.aspx/iRules/Webserver_Down_Message.html
As I point out on that page, though, 503 is the magic status code that makes the code fail. Can anyone shed some light on this bug?
Nimbostratus
Has anyone made some progress on how to force BigIP redirect using 503 response code ?
Tx.
Cirrostratus
when HTTP_REQUEST {
set data {Some data to send to the client. If you want to use variables in here, replace the curly braces with quotes.}
Look for a URI starting with a forward slash and then 3 digits (the first digit being 1-5)
If one is found, set it as the HTTP response code. Else, send back an HTTP 200
if {[string match {/[1-5][0-9][0-9]*} [HTTP::path]]}{
Send the response with the status code from the requested path and data
HTTP::respond [string range [HTTP::path] 1 3] content $data "a_header_name" "a_header_value"
log local0. "Sending [string range [HTTP::path] 1 3] response with $data"
} else {
Send a 200 response with data
HTTP::respond 200 content $data "a_header_name" "a_header_value"
log local0. "Sending default 200 response with $data"
}
}
Example curl request:
curl -v 10.42.2.102/503
* About to connect() to 10.42.2.102 port 80
* Trying 10.42.2.102... connected
* Connected to 10.42.2.102 (10.42.2.102) port 80
> GET /503 HTTP/1.1
> User-Agent: curl/7.15.3 (i686-redhat-linux-gnu) libcurl/7.15.3 OpenSSL/0.9.7l zlib/1.1.4
> Host: 10.42.2.102
> Accept: */*
>
< HTTP/1.0 503 Service Unavailable
< a_header_name: a_header_value
* HTTP/1.0 connection set to keep alive!
< Connection: Keep-Alive
< Content-Length: 109
Connection 0 to host 10.42.2.102 left intact
* Closing connection 0
Some data to send to the client. If you want to use variables in here, replace the curly braces with quotes.
Aaron
Nimbostratus