Managing HP Serviceguard A.11.20.10 for Linux, December 2012

It doesn't check:
• The correct setup of the power circuits.
• The correctness of the package configuration script.
8.7.6 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.
8.8 Solving Problems
Problems with Serviceguard may be of several types. The following is a list of common categories
of problem:
• Serviceguard Command Hangs.
• Cluster Re-formations.
• System Administration Errors.
• Package Control Script Hangs.
• Package Movement Errors.
• Node and Network Failures.
• Quorum Server Messages.
8.8.1 Name Resolution Problems
Many Serviceguard commands, including cmviewcl, depend on name resolution services to look
up the addresses of cluster nodes. When name services are not available (for example, if a name
server is down), Serviceguard commands may hang, or may return a network-related error message.
If this happens, use the host command on each cluster node to see whether name resolution is
correct. For example:
host ftsys9
ftsys9.cup.hp.com has address 15.13.172.229
If the output of this command does not include the correct IP address of the node, then check your
name resolution services further.
8.8.1.1 Networking and Security Configuration Errors
In many cases, a symptom such as Permission denied... or Connection refused...
is the result of an error in the networking or security configuration. Most such problems can be
resolved by correcting the entries in /etc/hosts. See “Configuring Name Resolution” (page 131)
for more information.
8.8.2 Halting a Detached Package
When you attempt to halt a detached package using the cmhaltpkg and the given node is not
reachable, you will get an error message as follows:
8.8 Solving Problems 249