Configuring Metrocluster with Sites

To configure SADTA, a Serviceguard cluster must be created that comprises nodes from both sites. In this example, a Serviceguard cluster is created using nodes from two sites.

Complete the following steps to configure a Metrocluster:

1.Create a Serviceguard cluster with the sites configured.

2.Configure the Cluster File System Multi-node Package (SMNP).

The following sections describe each of these steps in detail.

Creating a Serviceguard Cluster with Sites Configured

Complete the following steps to create a Serviceguard cluster with the sites configured:

1.Run the cmquerycl command to create a cluster configuration from any node.

2.Edit the created cluster configuration file to specify the site configuration. Following is a sample of the configuration file:

SITE_NAME <site1> SITE_NAME <site2> NODE_NAME <site1_node1> SITE <site1>

... . . .

NODE_NAME <site1_node2> SITE <site1>

. . .

NODE_NAME <site2_node1> SITE <site2> . . .

NODE_NAME <site2_node2> SITE <site2>

. . .

3.Run the cmapplyconf command to apply the configuration file.

4.Run the cmruncl command to start the cluster.

After the cluster is started, you can run the cmviewcl command to view the site configuration.

Configuring the Cluster File System Multi-node Package

If CFS/CVM is configured in the environment, then the Cluster File System multi-node package needs to be created.

Complete the following steps to configure the Cluster File System multi-node package when using HP Serviceguard Storage Management Suite:

1.Run the cfscluster command to create an SG-CFS SMNP package.

After creating the package, ensure that there are two CFS sub-clusters in the Metrocluster.

2.Run the cfscluster status command on any node at both sites to view the list of nodes and the status of each node.

Easy deployment of Site-Aware Cluster and CFS Cluster Using cmdeploycl

You can use the Cluster Easy Deployment feature while creating the cluster for the first time. In order to create a Metrocluster with two sites, run cmdeploycl command as shown below:

#cmdeploycl -s <site1_name> -n <node1> -n <node2> -s <site2_name> -n <node3> -n <node4> -c <cluster_name> -q <quorum_server>

For example,

#cmdeploycl -s siteA -n node1 -n node2 -s siteB -n node3 -n node4 -c site_cluster -q quorum.server.com

In order to create a Metrocluster with two sites and have the SG-CFS-pkg System Multi-node package (SMNP) configured in one step, run cmdeploycl as shown below:

346 Designing a Disaster Recovery Solution Using Site Aware Disaster Tolerant Architecture