IBM SG24-5131-00 manual Initial Testing, Clverify, Synchronizing Cluster Resources

as the path locations for start and stop scripts for the application. These scripts have to be in the same location on every service node.

Just as for pre- and post-events, these scripts can be adapted to specific nodes. They don’t need to be equal in content. The system administrator has to ensure, however, that they are in the same location, use the same name, and are executable for the root user.

4.3.1.4 Synchronizing Cluster Resources

After defining these resources and their relationship with the resource group, the act of synchronizing cluster resources sends the information contained on the current node to all defined cluster nodes.

Note

All configured nodes must be on their boot addresses when a cluster has been configured and the nodes are synchronized for the first time. Any node not on its boot address will not have its /etc/rc.net file updated with the HACMP entry; this causes problems for the reintegration of this node into the cluster.

If a node attempts to join the cluster when its configuration is out-of-sync with other active cluster nodes, it will be denied. You must ensure that other nodes are synchronized to the joining member.

4.4 Initial Testing

After installing and configuring your cluster, it is recommended that you do some initial testing in order to verify that the cluster is acting as it should.

4.4.1 Clverify

Running /usr/sbin/cluster/diag/clverify is probably a good start to the testing. It allows you to check the software and the cluster.

Software checking is reduced to lpp checking, which is basically checking whether HACMP-specific modifications to AIX files are correct. For correctness of the installation itself, use the lppcheck -vcommand.

Cluster verification is divided into topology and configuration checking. These two parts do basically the same as smit clverify, i.e. verifying that the clusters topology as well as the resource configurations are in sync on the cluster nodes.

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