Citrix ADC

Configure GSLB for wildcard domain

You can bind a wildcard DNS domain to a GSLB virtual server. Users accessing the applications behind a wildcard domain are routed to the best optimal data center, which hosts those applications. The wildcard domain handles requests for non-existent domains and subdomains. For more information about wildcard domains, see Supporting wildcard DNS domains.

To configure GSLB for a wildcard domain, you must first configure the basic GSLB setup. For details on how to configure a basic GSLB setup, see Configuring GSLB Entities Individually.

To configure a GSLB setup for wildcard domain by using the CLI

Perform the following steps to configure a GSLB setup for wildcard domain:

  1. Create the GSLB sites.

    add gslb site site1 10.0.1.10
    add gslb site site2 20.0.1.10
    <!--NeedCopy-->
    
  2. Add the GSLB services for each site participating in the GSLB setup.

    add gslb service svc1 -sitename site1 10.0.1.10  http 80
    add gslb service svc2 -sitename site1 10.0.1.10  http 80
    add gslb service svc3 -sitename site2 20.0.1.10  http 80
    add gslb service svc4 -sitename site2 20.0.1.10  http 80
    <!--NeedCopy-->
    
  3. Add the GSLB virtual server that references a service being used in the GSLB setup.

    add gslb vserver gslb_vs http
    <!--NeedCopy-->
    
  4. Add an ADNS service that listens to the DNS queries.

    add service adns_udp 10.14.39.21 ADNS 53
    <!--NeedCopy-->
    
  5. Bind the GSLB services to the GSLB virtual server.

    bind gslb vserver gslb_vs -service svc1
    bind gslb vserver gslb_vs -service svc2
    bind gslb vserver gslb_vs -service svc3
    bind gslb vserver gslb_vs -service svc4
    <!--NeedCopy-->
    
  6. Create a zone.

    add dns soaRec test.com -originServer n1.test.com -contact n1.test.com
    add dns nsrec test.com n1.test.com
    add dns nsrec test.com n2.test.com
    add dns zone test.com -proxymode no
    <!--NeedCopy-->
    
  7. Bind the domain name to the GSLB virtual server.

    bind gslb vserver gslb_vs -domainName *.test.com
    <!--NeedCopy-->
    
Configure GSLB for wildcard domain