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replication from the primary cluster. Finally, you need to move the recovery group out of the maintenance mode by enabling it using the cmrecovercl
WARNING! Ensure that the storage system of the recovery group is synchronized with the latest data and the replication environment is restored before the recovery group is moved out of the maintenance mode. Failure to do so can result in the recovery package using production data that was invalidated by the rehearsal run during a subsequent recovery.
For information on running a rehearsal process in your environment, see “Data Replication Rehearsal in a Sample Environment” (page 104).
Notes on Packages in Continentalclusters
Packages have different behavior in Continentalclusters than in a normal Serviceguard environment. There are specific differences in
•Startup and Switching Characteristics
•Network Attributes
From Continentalclusters version A.0.08.00 and above, you can configure the following package types in a recovery group:
•Failover
•Oracle RAC
•Complex workloads using SADTA
For details, see “Support for Complex Workloads in a Continentalclusters Environment using SADTA” (page 125).
In the case of a
NOTE:
•System
•Starting with Continentalclusters version A.08.00, packages in Continentalclusters can be configured as modular packages. For more information on configuring modular packages in Continentalclusters, see “Configuring Modular Packages in Continentalclusters” (page 65).
Startup and Switching Characteristics
Normally, an application (package) can run on only one node at a time in a cluster. However, in Continentalclusters, there are two clusters in which an
To keep packages from starting up automatically, when a cluster starts, set the AUTO_RUN
(PKG_SWITCHING_ENABLED used prior to Serviceguard A.11.12) parameter for all primary and recovery packages to NO. Then use the cmmodpkg command with the
CAUTION: After initial testing is complete, the cmrunpkg and cmmodpkg commands or the equivalent options in Serviceguard Manager should never be used to start a recovery package unless cluster recovery has already taken place.
46 Designing Continentalclusters