Clients

A client is a processor that can access the nodes in a cluster over a local area network.

Clients each run a "front end" or client application that queries the server application running on the cluster node. The PowerHA® SystemMirror® software provides a highly available environment for critical data and applications on cluster nodes. The PowerHA SystemMirror software does not make the clients themselves highly available. AIX® clients can use the Cluster Information (Clinfo) services to receive notice of cluster events. Clinfo provides an API that displays cluster status information. PowerHA SystemMirror provides a cluster status utility, the /usr/es/sbin/cluster/clstat. It is based on Clinfo and reports the status of key cluster components: the cluster itself, the nodes in the cluster, the network interfaces connected to the nodes, and the resource groups on each node. The cluster status interface of the clstat utility includes web-based, Motif-based and ASCII-based versions.