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Valentine_96813's avatar
Valentine_96813
Icon for Nimbostratus rankNimbostratus
Nov 07, 2012

Redirect on host and uri

Having some trouble with this redirect. I am trying to redirect to maint page globally on pool members being down. However, I need to redirect a certain url and a certain URI to a seperate page if they are present. I tried several different rules. My last one here, I split everything out into specifc lines. Maybe I just cannot see the forest through the trees today.

 

 

when HTTP_REQUEST {

 

These requests go to specified maintenance page if conditions are met otherise go to default page

 

if { ([active_members [LB::server pool]] == 0 && [string tolower [HTTP::host]] starts_with "abc.webserver.com") } {

 

HTTP::redirect "http://sorrypage.net/default_api.aspx"}

 

if { [active_members [LB::server pool]] == 0 && [string tolower [http_uri]] starts_with "/identity/issue/oauth2/token"} {

 

HTTP::redirect "http://sorrypage.net/default_api.aspx"}

 

elseif { [active_members [LB::server pool]] == 0} {

 

HTTP::redirect "http://maintenance.cloudapp.net"} }

 

application delivery
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5 Replies

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  • nathe's avatar
    nathe
    Icon for Cirrocumulus rankCirrocumulus
    Nov 07, 2012
    Valentine

    How about this? 

    when HTTP_REQUEST {
    if { [active_members [LB::server pool]] == 0 && [string tolower [HTTP::host]] starts_with "abc.webserver.com" }{
           HTTP::redirect "http://sorrypage.net/default_api.aspx"

    } elseif { [active_members [LB::server pool]] == 0 && [string tolower [http_uri]] starts_with "/identity/issue/oauth2/token"}{
           HTTP::redirect "http://sorrypage.net/default_api.aspx"

    } elseif { [active_members [LB::server pool]] == 0} {
        HTTP::redirect "http://maintenance.cloudapp.net"
  } 
}

    Hope this helps,

    N
  • nathe's avatar
    nathe
    Icon for Cirrocumulus rankCirrocumulus
    Nov 07, 2012
    Valentine - the iRule should have two sets of && as per your example. Uploading has changed this.
  • Valentine_96813's avatar
    Valentine_96813
    Icon for Nimbostratus rankNimbostratus
    Nov 07, 2012

    When I try this I get the same result as mine. Everything seems to redirect using the global at the bottom. The host and URI exclusion seem to be ignored or not matched.

     

  • nathe's avatar
    nathe
    Icon for Cirrocumulus rankCirrocumulus
    Nov 07, 2012
    Saw one mistake in the code so slight adjustment. Also added a log at the beginning just to be sure of what we're seeing:

     

     

    when HTTP_REQUEST {

     

    log local0. "Host is [HTTP::host], URI is [HTTP::uri]"

     

    if { ([active_members [LB::server pool]] == 0) && ([string tolower [HTTP::host]] starts_with "abc.webserver.com") } {

     

    HTTP::redirect "http://sorrypage.net/default_api.aspx"

     

     

    } elseif { ([active_members [LB::server pool]] == 0) && ([string tolower [HTTP::uri]] starts_with "/identity/issue/oauth2/token") } {

     

    HTTP::redirect "http://sorrypage.net/default_api.aspx"

     

     

    } elseif { ([active_members [LB::server pool]] == 0) } {

     

    HTTP::redirect "http://maintenance.cloudapp.net"

     

    }

     

    }

     

     

     

     

  • nathe's avatar
    nathe
    Icon for Cirrocumulus rankCirrocumulus
    Nov 08, 2012
    Did you manage to try this irule?

     

    I tried it in the lab today and it worked. Although I did have to swap around the if statements so URI is checked prior to Host - else it always matched the Host.

     

     

    Rgds

     

    N