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IBM System Storage DR550 Version 3.0 ------17 March 2006 Page 86
IBM Storage Systems Copyright © 2006 by International Business Machines Corporation
For example, you could use 10.10.10.1 as the IP Address Offset. If you had a network with 2 NICs
on each node, and a subnet mask of 255.255.255.0, you would end up with the following heartbeat
IP aliases:
Node A:
10.10.10.1
10.10.11.1
Node B:
10.10.10.2
10.10.11.2
These addresses will show up when you run AIX commands such as netstat.
Note: The clverify utility does not check the interfaces or subnet requirements for a heartbeat over IP
aliases configuration because they use a separate address range.
Monitoring the HACMP Cluster
Log files allow you to track cluster events and history. The /usr/es/adm/cluster.log file tracks
cluster events; the /tmp/hacmp.out file records the output generated by configuration scripts as
they execute; the /usr/es/sbin/cluster/history/cluster.mmddyyyy log file logs the daily cluster
history; the /tmp/cspoc.log file logs the status of C-SPOC commands executed on cluster nodes.
You should also check the RSCT log files.
HACMP provides the /usr/es/sbin/cluster/clstat utility for monitoring a cluster and its components.
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,
clstat displays the IP label and IP address of each network interface attached to the node and
whether that interface is up or down. See the clstat main page for additional information.
If clstat is run on an X Window client, a graphical display appears. The clstat command and the –a
flag can be used on an ASCII display on an X-capable machine.
Error Notification and Monitoring
Several technologies are available to monitor the DR550 and report errors.
DS4000 Storage Manager e-mail and SNMP alerting are available. The Storage Manager’s
management information base (MIB) is provided on the Storage Manager 9.12 (or 9.15) CD that is
shipped with the DR550. Installing just the MIB will not affect the 9.12.65 version of code. Please
do not install any other version of SM Client code on top of the 9.12.65 version already
installed.
AIX and HACMP SNMP alerting are available. Standard AIX practices for error notification or
forwarding of system messages are documented in the AIX System Administration manuals.
HMC electronic problem reporting
This section describes how to set up the Hardware Management Console (HMC) for electronic
problem reporting through the local modem.