Managing HP Serviceguard for Linux, Eighth Edition, March 2008

Troubleshooting Your Cluster
Troubleshooting Approaches
Chapter 8 315
Using the cmquerycl and cmcheckconf Commands
In addition, cmquerycl and cmcheckconf can be used to troubleshoot
your cluster just as they were used to verify its configuration. The
following example shows the commands used to verify the existing
cluster configuration on ftsys9 and ftsys10:
cmquerycl -v -C $SGCONF/verify.ascii -n ftsys9 -n ftsys10
cmcheckconf -v -C $SGCONF/verify.ascii
The cmcheckconf command checks:
• The network addresses and connections.
• Quorum Server connectivity, if a quorum server is configured.
• Lock LUN connectivity, if a lock LUN is used.
• The validity of configuration parameters of the cluster and packages
for:
— The uniqueness of names.
— The existence and permission of scripts.
It doesn't check:
• The correct setup of the power circuits.
• The correctness of the package configuration script.
Reviewing the LAN Configuration
The following networking commands can be used to diagnose problems:
• ifconfig can be used to examine the LAN configuration. This
command lists all IP addresses assigned to each LAN interface card.
• arp -a can be used to check the arp tables.
• cmscancl can be used to test IP-level connectivity between network
interfaces in the cluster.
• cmviewcl -v shows the status of primary LANs.
Use these commands on all nodes.