Configuring nodegroups for spotted and partially-striped configurations
To configure a nodegroup for spotted and partially-striped configurations you must first create a nodegroup and then bind the required nodes to the nodegroup. You must then associate the required entities to that nodegroup. The entities that are bound to the nodegroup will be:
- Spotted - If bound to a nodegroup that has a single node.
- Partially Striped - If bound to a nodegroup that has more than one node.
Some points to remember:
- GSLB is supported on a cluster only when GSLB sites are bound to nodegroups that have a single cluster node. For more information, see Setting Up GSLB in a Cluster.
- Citrix® Gateway is supported on a cluster only when the VPN virtual servers are bound to nodegroups that have a single cluster node. The sticky option must be enabled on the nodegroup.
- For versions prior to NetScaler® 11, application firewall is supported only on individual cluster nodes (spotted configuration). Application firewall profiles can be associated only with virtual servers that are bound to nodegroups that have a single cluster node. This means that application You are not allowed to do the following:
- Bind application firewall profiles to striped or partially striped virtual servers.
- Bind the policy to a global bind point or to user-defined policy labels.
- Unbind, from a nodegroup, a virtual server that has application firewall profiles.
- NetScaler 11 introduced application firewall support for striped and partially-striped configurations. For more information, see Application Firewall Support for Cluster Configurations.
Check Citrix ADC Features Supported in a Cluster to see the NetScaler versions from which GSLB, Citrix Gateway, and application firewall are supported in a cluster.
To configure a nodegroup by using the command line interface
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Log on to the cluster IP address.
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Create a nodegroup. Type:
add cluster nodegroup <name> -strict (YES | NO)<!--NeedCopy-->Example
add cluster nodegroup NG0 -strict YES -
Bind the required nodes to the nodegroup. Type the following command for each member of the nodegroup:
bind cluster nodegroup <name> -node <nodeId><!--NeedCopy-->Example
To bind nodes with IDs 1, 5, and 6.
> bind cluster nodegroup NG0 -node 1 > bind cluster nodegroup NG0 -node 5 > bind cluster nodegroup NG0 -node 6 -
Bind the entity to the nodegroup. Type the following command once for every entity that you want to bind:
bind cluster nodegroup <name> (-vServer <string> | -identifierName <string> | -gslbSite <string> -service <string>)<!--NeedCopy-->Note
The gslbSite and service parameters are available from NetScaler 10.5 onwards.
Example
To bind virtual servers VS1 and VS2 and rate limit identifier named identifier1.
> bind cluster nodegroup NG0 -vServer VS1 > bind cluster nodegroup NG0 -vServer VS2 > bind cluster nodegroup NG0 -identifierName identifier1 -
Verify the configurations by viewing the details of the nodegroup. Type:
show cluster nodegroup <name><!--NeedCopy-->Example
> show cluster nodegroup NG0
To configure a nodegroup by using the configuration utility
- Log on to the cluster IP address.
- Navigate to System > Cluster > Node Groups.
- In the details pane, click Add.
- In the Create Node Group dialog box, configure the nodegroup:
- Under Cluster Nodes, click the Add button.
- The Available list displays the nodes that you can bind to the nodegroup and the Configured list displays the nodes that are bound to the nodegroup.
- Click the + sign in the Available list to bind the node. Similarly, click the - sign in the Configured list to unbind the node.
- Under Virtual Servers, select the tab corresponding to the type of virtual server that you want to bind to the nodegroup. Click the Add button.
- The Available list displays the virtual servers that you can bind to the nodegroup and the Configured list displays the virtual servers that are bound to the nodegroup.
- Click the + sign in the Available list to bind the virtual server. Similarly, click the - sign in the Configured list to unbind the virtual server.
- Under Cluster Nodes, click the Add button.