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kazeem_yusuf1's avatar
kazeem_yusuf1
Icon for Nimbostratus rankNimbostratus
Jan 30, 2017

F5 TO LOAD BALANCE TWO DIFFRENT URL'S RUNNING ON THE SAME PORT (URGENT)

How can F5 be configured to load balance two different applications (url's) running on the same server and port.

 

Almost all scenarios i have seen include have had at least, different ports running both url's.

 

initially, i thought they were running on separate ports,and configured, http and https redirection for the actual url.e.g, https://smartit.networkershome.com/ux/myitapp/ using an irule like this,

 

HTTPS REDIRECTION.

 

when HTTP_REQUEST { if { [HTTP::host] equals "smartit.networkershome.com" && [HTTP::uri] equals "/"} { HTTP::redirect "https://smartit.networkershome.com/ux/smart-it";; } }

 

and HTTP REDIRECT FOR SAME VS ON PORT 80

 

when HTTP_REQUEST { if {[HTTP::host] equals "smartit.networkershome.com" } { HTTP::redirect "https://smartit.networkershome.com/ux/smart-it"; } }

 

And,both redirections are working well for the first url.

 

However,i deployed the same set of irules for the second url https://myit.networkershome.com/ux/myitapp/ (BOTH HTTPS,HTTP VIRTUAL SERVERS), and none is working.

 

I requested that the applications guys run the instances on different ports, but they insisted that the Tomcat engine could run both instances on the same port.

 

Both url's can be seen to work,if one loads in their exact url, but http,and https redirection for both at the same time,just isn't working.

 

I will be glad to get some help

 

application delivery
iRules
LTM

2 Replies

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  • Ryannnnnnnnn's avatar
    Ryannnnnnnnn
    Icon for Altocumulus rankAltocumulus
    Jan 30, 2017

    Hi,

     

    If vhosting is configured correctly on Tomcat then this should be a no-brainer.

     

    Can you provide your virtual server configuration, or share how you have things configured?

     

  • Kai_Wilke's avatar
    Kai_Wilke
    Icon for MVP rankMVP
    Feb 03, 2017

    Hi Kazeem,

    you can host multiple ports (e.g. HTTP:80/HTTPS:443) on a single virtual server. But it will increase the complexity to a great extent (e.g. enabling/disabling SSL and conditinal redirecting if the request was send to TCP:80/TCP:443).

    You may take a look to the iRules below to see the differences if you use a single combined Virtual Server in contrast to using two dedicated Virtual Servers.

    iRule: Combined HTTP/HTTPS Virtual

    when CLIENT_ACCEPTED {

     Handle to check the used port

    if { [TCP::local_port] == 80 } then {

         Handle for HTTP:80 requests (disable SSL profile)

        SSL::disable clientside
        set is_http 1

    } else {

         Handle for HTTPS:443 requests (enable SSL profile )

        SSL::enable clientside
        set is_http 0

    }
}
when HTTP_REQUEST {

     Handle to apply different rulsets based on the Virtual Portnumber

    if { $is_http } then {

         Handle for SSL:443 requests

        if { [HTTP::host] equals "smartit.networkershome.com" } then {

             Handle for request to http://smartit.networkershome.com

            HTTP::redirect "https://smartit.networkershome.com/ux/smart-it"

        } else {

             Handle for request to different HOSTNAMES

        }

    } else {

         Handle for SSL:443 requests

        if { [HTTP::host] equals "smartit.networkershome.com" } then {

             Handle for request to https://smartit.networkershome.com

            if { [HTTP::uri] equals "/" } then {

                 Handle for request to https://smartit.networkershome.com/

                HTTP::redirect "/ux/smart-it"

            } else {

                 Handle for request to https://smartit.networkershome.com/*

            }

        } else {

             Handle for request to different HOSTNAMES

        }

    }

}

    A much easier approach would be to use dedicated Virtual Server for HTTP:80 and HTTP:443 access. In this case each virtual server will have fixed and appropiate SSL settings and have a tailordered iRule / LTM in place to supports the scenario.

    iRule: Dedicated HTTP Virtual

    when HTTP_REQUEST {

    if { [HTTP::host] equals "smartit.networkershome.com" } then {

         Handle for request to http://smartit.networkershome.com

        HTTP::redirect "https://smartit.networkershome.com/ux/smart-it"

    } else {

         Handle for request to different HOSTNAMES

    }
}

    iRule: Dedicated HTTPS Virtual

    when HTTP_REQUEST {

    if { [HTTP::host] equals "smartit.networkershome.com" } then {

         Handle for request to https://smartit.networkershome.com

        if { [HTTP::uri] equals "/" } then {

             Handle for request to https://smartit.networkershome.com/

            HTTP::redirect "/ux/smart-it"

        } else {

             Handle for request to https://smartit.networkershome.com/*

        }

    } else {

         Handle for request to different HOSTNAMES

    }
}

    Cheers, Kai