Designing a Continental Cluster
Building the Continentalclusters Configuration
Chapter 2 83
2. After the PRIMARY_PACKAGE keyword, enter a primary package
definition consisting of the cluster name followed by a slash (/)
followed by the package name. Example:
PRIMARY_PACKAGE LAcluster/custpkg
3. Optionally, enter a data sender package definition consisting of the
cluster name, a slash (/), and the data sender package name after the
DATA_SENDER_PACKAGE keyword. This is only necessary if you are
using a logical data replication method that requires a data sender
package.
4. After the RECOVERY_PACKAGE keyword, enter a recovery package
definition consisting of the cluster name followed by a slash (/)
followed by the package name. Example:
RECOVERY_PACKAGE NYcluster/custpkg_bak
5. Optionally, enter a data receiver package definition consisting of the
cluster name, a slash (/), and the data receiver package name after
the DATA_RECEIVER_PACKAGE keyword. This is only necessary if
using a logical data replication method that requires a data receiver
package.
6. Repeat these steps for each package that will be recovered. Each
package must be configured in a separate recovery group.
A printout of Section 2 of the Continentalclusters ASCII configuration
file follows.
###############################################################################
#### ####
#### Section 2. Recovery Groups ####
#### ####
#### This section defines recovery groups--sets of Serviceguard ####
#### packages that are ready to recover applications in case of ####
#### cluster failure. Recovery groups allow one cluster in the ####
#### continental cluster configuration to back up another member ####
#### cluster's packages. You create a separate recovery group ####
#### for each Serviceguard package that will be started on the ####
#### recovery cluster when the cmrecovercl(1m) command is issued. ####
#### ####
#### A recovery group consists of a primary package running on ####
#### one cluster, a recovery package that is ready to run on a ####
#### different cluster. In some cases, a data receiver package runs ####
#### on the same cluster as the recovery package, and in some cases, ####
#### a data sender package runs on the same cluster as the primary ####
#### package. ####