Consult the HACMP for AIX, Version 4.3: Troubleshooting Guide, SC23-4280, for help if you detect a problem with an HACMP cluster.

8.1.1 The clstat Command

HACMP for AIX provides the /usr/sbin/cluster/clstat command for monitoring a cluster and its components. The clstat utility is a clinfo client program that uses the Clinfo API to retrieve information about the cluster. Clinfo must be running on a node for this utility to work properly.

The /usr/sbin/cluster/clstat utility runs on both ASCII and X Window Display clients in either single-cluster or multi-cluster mode. Multi-cluster mode requires that you use the -iflag when invoking the clstat utility. The client display automatically corresponds to the capability of the system. For example, if you run clstat on an X Window client, a graphical display for the utility appears. However, you can run an ASCII display on an X-capable machine by specifying the -aflag. In order to set up a connection to the cluster nodes, the /usr/sbin/cluster/etc/clhosts file must be configured on the client.

The clstat utility reports whether the cluster is up, down, or unstable. It also reports whether a node is up, down, joining, leaving, or reconfiguring, and the number of nodes in the cluster. For each node, the utility displays the IP label and address of each network interface attached to the node, and whether that interface is up or down. See the clstat man page for additional information about this utility.

8.1.2 Monitoring Clusters using HAView

HAView is a cluster monitoring utility that allows you to monitor HACMP clusters using NetView for AIX. Using NetView, you can monitor clusters and cluster components across a network from a single management station.

HAView creates and modifies NetView objects that represent clusters and cluster components. It also creates submaps that present information about the state of all nodes, networks, and network interfaces associated with a particular cluster. This cluster status and configuration information is accessible through NetView’s menu bar.

HAView monitors cluster status using the Simple Network Management Protocol (SNMP). It combines periodic polling and event notification through traps to retrieve cluster topology and state changes from the HACMP management agent, that is, the Cluster SMUX peer daemon (clsmuxpd).

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IBM SG24-5131-00 manual Clstat Command, Monitoring Clusters using HAView