18.3.2 Configuring application failover with the NNMi Cluster Setup Wizard

The NNMi Cluster Setup Wizard automates the process of configuring a cluster within NNMi for use with application failover. The wizard enables you to do the following:

• Specify and validate cluster nodes

• Define cluster properties and ports

• Merge the nnm-key.p12 file and nnm-trust.p12 file content for both nodes into a single nnm-key.p12 file and nnm-trust.p12 file

1. Launch the Cluster Setup Wizard by entering the following URL into a supported Web browser:

   http://NNMi-server:port/cluster

   • NNMi-server is the value of the NNMi host.

   • port is the value of the NNMi port.

2. Enter your system User Name and Password, and then click the Login button to sign into NNMi.

3. Enter Local Hostname and Remote Cluster Node values to define the cluster nodes, and then click Next.

   Important

   If either of the nodes has multiple IPv4 addresses, enter the IPv4 address to be used for each node's NNMi communication in Local Hostname and Remote Cluster Node.

4. On the Communication Results page, review the communication verification results. If an error is detected, click Previous and fix the problem; otherwise, click Next.

   A green status message indicates that connection to the remote cluster node was successful.

5. On the Define Cluster Properties page, enter the Cluster Name and define the Backup Interval (in hours). Specify Cluster Name in alphanumeric characters. Next, specify whether to enable automatic failover. Click Next.

6. On the Define Cluster Ports page, enter Starting Cluster Port and File Transfer Port values.

   The NNMi cluster uses four contiguous ports beginning with the Starting Cluster Port.

7. Click Next.

8. Review the summary information that was entered on the Summary page.

   Click Previous to go back and change configuration information; otherwise, click Commit to save the cluster configuration.

   The final summary indicates that the information was written successfully to the configuration files.

9. Immediately stop NNMi on both nodes by running the ovstop command on both nodes.

10. Configure the NIC that will be used for cluster communication between the nodes.

    For details, see 18.3.3 Setting application failover communications.

    Important

    Make sure to specify the setting if either of the nodes has multiple NICs.

11. Verify that the two nodes are able to cluster by running the nnmcluster command on both nodes.

    If the nodes are not able to cluster, see 18.3 Configuring NNMi for application failover.

12. Start NNMi on the desired active node with the nnmcluster -daemon command. Wait for NNMi to report ACTIVE.

    For details, see 18.3 Configuring NNMi for application failover.

13. Start the standby node with the nnmcluster -daemon command.

To Page Top