Designing Disaster Tolerant High Availability Clusters, 10th Edition, March 2003 (B7660-90013)

Physical Data Replication for ContinentalClusters Using Continuous Access XP

Setting up a Recovery Package on the Recovery Cluster

Chapter 6308

Create an MC/ServiceGuard package configuration file in the

recovery cluster with the commands:

# cd /etc/cmcluster/<package_name>

# cmmakepkg -p <package_name>.ascii

Customize it as appropriate to your application. Be sure to include

the pathname of the control script (/etc/cmcluster/<package_name>/

<package_name>.cntl) for the RUN_SCRIPT and HALT_SCRIPT

parameters.

Set the AUTO_RUN flag to NO. This is to ensure the package will not

start when the cluster starts. Do not use cmmodpkg to enable

package switching on any recovery package. Enabling package

switching will automatically start the recovery package. Package

switching on a recovery package will be automatically set by the

cmrecovercl command on the recovery cluster when it successfully

starts the recovery package.

4. Create a package control script with the command:

# cmmakepkg -s pkgname.cntl

Customize the control script as appropriate to your application using

the guidelines in Managing MC/ServiceGuard. Standard

MC/ServiceGuard package customizations include modifying the VG,

LV, FS, IP, SUBNET, SERVICE_NAME, SERVICE_CMD and

SERVICE_RESTART parameters. Be sure to set LV_UMOUNT_COUNT to 1

or greater.

NOTE Some of the control script variables, such as VG and LV, on the

recovery cluster must be the same as on the primary cluster. Some

of the control script variables, such as, FS, SERVICE_NAME,

SERVICE_CMD and SERVICE_RESTART are probably the same as on the

primary cluster. Some of the control script variables, such as IP and

SUBNET, on the recovery cluster are probably different from those on

the primary cluster. Make sure that you review all the variables

accordingly.

5. Add customer-defined run and halt commands in the appropriate

places according to the needs of the application. See Managing

MC/ServiceGuard for more information on these functions.