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Citrix ADC
Current Release 13.0 12.1
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Configure active-passive site

September 21, 2020
Contributed by:
S

The following figure shows the workflow involved in the active-passive site configuration.

localized image

Before you begin configuring an active-passive site, make sure you have configured a standard load balancing setup for each server farm or data center.

Also, for synchronizing the GSLB configuration across the GSLB sites in the deployment, make sure that:

  • Local GLSB Sites are configured on all the appliances in the GSLB configuration.
  • You have enabled management access on all the GSLB Sites in the configuration.
  • You have configured the firewall to accept the auto synchronization and MEP connections.
  • The master and slave Citrix ADC appliances are running the same Citrix ADC software versions.
  • All the Citrix ADC appliances participating as sites should have the same Citrix ADC software version (the sites are not in a master-slave relationship).
  • The RPC node password is same across all the GSLB sites in the GSLB configuration.

To configure an active-passive site by using the wizard

在Configuration tab, do the following:

  1. Navigate toTraffic Management>GSLB, and then clickGet Started。
  2. If you have not configured an ADNS service or a DNS virtual server for the site, you can do it now.
    1. ClickViewand then clickAdd。
    2. Enter the service name, IP address and select the protocol (ADNS/ADNS_TCP) through which the data is exchanged with the service.
  3. SelectActive-Passive Site。
  4. Enter the fully qualified domain name and specify the time period for which the record must be cached by DNS proxies.
  5. Configure the GSLB sites. Each site must be configured with a local GSLB site, and each site’s configuration must include all the other sites as remote GSLB sites. There can be only one local site and all other sites are remote sites.
    1. Enter the site details, such as the site name and site IP address.
    2. Select either REMOTE or LOCAL site type.
    3. Optionally, change the RPC password and, if necessary, secure it.
    4. If a monitor is to be bound to the GSLB service, select the condition under which the monitor is to monitor the service. This will be effective only after a monitor is bound to the services. The possible conditions are:
      • ALWAYS。Monitor the GSLB service at all times.
      • MEP Fails。Monitor the GSLB service only when the exchange of metrics through MEP fails.
      • MEP Fails and Service ID Down。启用交换指标通过议员但the status of the service, updated through metrics exchange, is DOWN.
  6. Configure the GSLB services.
    1. Enter the service details, such as service name, service type, and port number.
    2. Associate the service with a site (local or remote) by selecting the GSLB site where the GSLB service belongs.
    3. Select the monitor that must be bound to the service when MEP fails, if required. The service can be an existing server, or you can create a new server or a virtual server.
    4. To associate an existing server, select the server name. The service IP address is automatically populated.
      • If the public IP address is different from the server IP, which can happen in a NAT environment, enter the public IP address and the port number of the public port.
      • To associate a new server, create a server by entering the server IP details and its public IP address and the public port number.
      • To associate a virtual server, select an already existing virtual server, or click+and add a new virtual server. This vserver is the load balancing vserver with which this GSLB service will be associated.
  7. Configure the GSLB backup virtual servers. The GSLB backup virtual servers become operational only when the primary GSLB virtual servers is inaccessible or it is marked DOWN for any reason.
    1. Enter the name of the GSLB virtual server name and select the DNS record type.
    2. Click>inService Binding, and choose the GSLB services that must be bound to the GSLB virtual server.
    3. Choose the GSLB method for selecting the best-performing GSLB service. The default values for GSLB method, backup method, and dynamic weight are auto-populated, by default. You can change them if required.
      • If you choose theAlgorithm basedmethod, select the primary and backup methods.
      • If you choose the圣atic Proximitymethod, select the backup method and provide the location of the database file.
      • If you choose theDynamic Proximity (RTT)method, select the backup method and specify the service weight and the RTT value based on which the best-performing service is to be selected.
  8. Configure the GSLB virtual servers.
    1. Enter the name of the GSLB virtual server name and select the DNS record type.
    2. Click>in theSelect Servicebox and choose the GSLB services to be bound to the GSLB virtual server.
    3. Click>in theDomain Bindingbox to select the domain to be bound to this GSLB virtual server.
    4. Choose the GSLB method for selecting the best-performing GSLB service. The default values for GSLB method, backup method, and dynamic weight are auto-populated, by default. You can change them if required.
      • If you choose theAlgorithm basedmethod, select the primary and backup methods and also specify the dynamic weight option.
      • If you choose the圣atic Proximitymethod, select the backup method and the dynamic weight method. Also, provide the location of the database file by clicking the>icon or add a new location by clicking+in the Select a location database box.
      • If you choose theDynamic Proximity (RTT)method, select the backup method and specify the dynamic weight option and the round-trip time value based on which the best-performing service is to be selected.
  9. ClickDoneif the configuration is complete. The GSLB dashboard appears.
  10. If you have modified the GSLB site configuration, clickAuto Synchronize GSLBin the dashboard to synchronize the configuration to other sites in the GSLB setup.
    • Before synchronization, make sure that the local site’s configuration includes information about the remote sites. Also, for the synchronization to be successful, the local site must be configured on the other Citrix ADC appliances.
    • If real-time synchronization is enabled, you do not have to clickAuto Synchronize GSLB。The synchronization happens automatically. To enable real time synchronization, do the following:
      1. Navigate toTraffic Management>GSLB>Dashboardand clickChange GSLB Settings。
      2. Select theAutomatic Config Synccheck box.
  11. ClickTest GSLB Setupto make sure that the ADNS services or the DNS servers are responding with the correct IP address for the domain name that is configured in the GSLB setup.

Note

For details about configuring GSLB entities of an active-passive GSLB setup for disaster recovery, seeConfiguring GSLB for Disaster Recovery。

Configure active-passive site
September 21, 2020
Contributed by:
S
September 21, 2020
Contributed by:
S

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