Managing Serviceguard Eighteenth Edition, September 2010

The cmcheckconf command checks:
• The network addresses and connections.
• The cluster lock disk connectivity.
• 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.
Using the cmviewconf Command
cmviewconf allows you to examine the binary cluster configuration file, even when
the cluster is not running. The command displays the content of this file on the node
where you run the command.
Reviewing the LAN Configuration
The following networking commands can be used to diagnose problems:
• netstat -in can be used to examine the LAN configuration. This command
lists all IP addresses assigned to each LAN interface card.
• lanscan can also be used to examine the LAN configuration. This command lists
the MAC addresses and status of all LAN interface cards on the node.
• arp -a can be used to check the arp tables.
• landiag is useful to display, diagnose, and reset LAN card information.
• linkloop verifies the communication between LAN cards at MAC address levels.
For example, if you enter
linkloop -i4 0x08000993AB72
you should see displayed the following message:
Link Connectivity to LAN station: 0x08000993AB72 OK
• cmscancl can be used to verify that primary and standby LANs are on the same
bridged net.
• cmviewcl -v shows the status of primary and standby LANs.
Use these commands on all nodes.
Solving Problems
Problems with Serviceguard may be of several types. The following is a list of common
categories of problem:
• Serviceguard command hangs
• Networking and security configuration errors
Solving Problems 413