The unit VERITAS Cluster Server uses for switching systems between nodes is called a group. The applications comprising a group operate using what are referred to as resources. The following types of resources are available:
Provide NICs, logical IP addresses, and a shared disk, and set them up as VERITAS Cluster Server resources to form a group. In the explanation in this manual, VERITAS Volume Manager is used for setting up a shared disk. When these resources are set up, resource types that have already been defined (such as NIC type, IP type, and DiskGroup) can be used.
It is also necessary to set up HiRDB as a resource within the group so that it can be managed by VERITAS Cluster Server. For this purpose, a new resource type is defined for HiRDB. For details on how to define a resource type, see 25.8.2 HiRDB resource type definition.
The resource type name is HiRDB_S in the case of a HiRDB/Single Server and HiRDB_P in the case of a HiRDB/Parallel Server. This manual uses the generic notation HiRDB_x for resource type names; substitute HiRDB_S or HiRDB_P as appropriate.
Parent-child relationships are defined for the resources defined within a group. For HiRDB to run, logical IP addresses (when IP addresses are inherited) and the shared disk must be enabled. Therefore, HiRDB_x type resources must be defined as parent resources to the IP type and DiskGroup type resources. Figure 25-50 shows a group configuration.
Figure 25-50 Group configuration
If HiRDB terminates abnormally when operating the system switchover facility in the monitor mode, HiRDB will restart. For this reason, it is not necessary to monitor the operating status of HiRDB. However, you must create a dummy file for notifying VERITAS Cluster Server that HiRDB is currently active as a resource. This dummy file must satisfy all the conditions listed below.