Building Disaster Recovery Serviceguard Solutions Using Metrocluster with Continuous Access EVA P6000 for Linux B.01.00.00

The site_preferred value implies that when a Metrocluster package needs to fail over, it

fails over to a node in the same site as the node it last ran. If there is no other configured node

available within the same site, the package fails over to a node on another site.

The site_preferred_manual failover policy provides automatic failover of packages

within a site and manual failover across sites.

Configure a cluster with sites to use either of these policies. For information on configuring

the failover policy to site_preferred or site_preferred_manual, see “Site Aware

Failover Configuration” (page 11).

3. Validate the package configuration file.

# cmcheckconf -P temp.config

4. Apply the package configuration file.

# cmapplyconf -P temp.config

NOTE: If external_pre_script is specified in a Metrocluster package configuration,

the external_pre_script is executed after the execution of Metrocluster module scripts

in package startup. Metrocluster module scripts are always executed first during package

startup.

5. Run the package on a node in the Serviceguard cluster.

# cmrunpkg -n <node_name> <package_name>

6. Enable global switching for the package.

# cmmodpkg -e <package_name>

After the package is created, if the value of any Metrocluster parameter needs to be changed, edit

this package configuration file and re-apply it.

Setting up Disk Monitoring

HP Serviceguard for Linux includes a Disk Monitor which you can use to detect problems in disk

connectivity. This lets you fail a package over from one node to another in the event of a disk

connectivity failure.

For instructions on configuring disk monitoring , see Creating a Disk Monitor Configuration section

in Managing HP Serviceguard A.11.20.10 for Linux available at http://www.hp.com/go/

linux-serviceguard-docs.

Configuring a Metrocluster package using Serviceguard Manager

To configure a Metrocluster package using Serviceguard Manager:

1. Access one of the node’s System Management Home Page at http://<nodename>:2301.

2. Click Tools, if Serviceguard is installed, one of the widgets will have Serviceguard as an

option. Click Serviceguard Manager link within the widget.

3. On the Cluster’s Home Page, click the Configuration Tab, and then select Create A Modular

Package.

Installing and configuring an application 21