Managing Clusters 107novdocx (en) 7 January 20108.13.2 Moving a Cluster or Changing IP Addresses of ClusterNodes and ResourcesIf you move a cluster to a different subnet, you must change the IP addresses of the cluster nodes andthe cluster resources, information about the LDAP servers used by the cluster, and possibly theadministrator credentials for the cluster.When you move the cluster to a new IP subnet, you must replace the existing unique static IPaddresses with ones that are valid in that subnet. You can make the IP address changes in the oldlocation or the new location. If you start the servers in the different IP subnet with the old IPaddresses, the cluster does not come up until you make the changes described in this section.To modify the IP addresses of servers being used in a Novell Cluster Services cluster, perform thefollowing tasks in the order given: “Prerequisites” on page 107 “Changing the IP Addresses of Cluster Resources” on page 107 “Changing the IP Addresses of Servers in a Cluster” on page 108 “Modifying the Cluster Configuration Information” on page 108PrerequisitesBefore you begin, make sure that the IP addresses and administrator username that you plan to usemeet the requirements specified in Section 3.1.3, “Configuration Requirements,” on page 34.Changing the IP Addresses of Cluster ResourcesBefore you modify the server IP address for a server in a cluster, you must change the IP addressesof all of the cluster resources that run on it:1 Offline the cluster resources whose IP addresses are changing.1a In iManager, click Clusters, then click Cluster Manager.1b Browse to locate and select the Cluster object of the cluster you want to manage.1c Select the check boxes next to the resources you want to take offline, then click Offline.2 For each cluster resource, including the master IP address resource, modify information asneeded in the resource load, unload, and monitor scripts.2a In iManager, click Clusters, then click Cluster Options.2b Browse to locate and select the Cluster object of the cluster you want to manage.2c Select the check box next to the resource whose load script you want to edit, then click theDetails link.2d Click the Scripts tab, then click the Load Script link.2e Edit the script by replacing variables with actual values for your new configuration, suchas the resource IP address and container name where you will be moving the cluster. Youmight also need to edit the values used in the command lines.IMPORTANT: Do not comment out commands that are automatically generated forparameters that define the cluster resource, such as the mount point, IP address, containername, file system type, and device.
