Managing Serviceguard 12th Edition, March 2006

Planning and Documenting an HA Cluster
Cluster Configuration Planning
Chapter 4162
begin to attempt a failover when network traffic is not
noticed for a time. (Serviceguard calculates the time
depending on the type of LAN card.)
The configuration file specifies one of two ways to
decide when the network interface card has failed:
• INOUT - The default method will count inbound and
outbound failures separately, and declare a card
down only when both have reached a critical level.
• INONLY_OR_INOUT - This option combines the
inbound and outbound failure counts, and will
declare a card down when the total failures reach a
critical amount, regardless of their source. With
this method, Serviceguard tries to validate inbound
failure reports by doing additional remote polling.
The default is INOUT.
The suitability of an option depends mainly on your
network configuration. To see more about whether the
new INONLY_OR _INOUT option is the best for your
network configuration, see “Inbound Failure Detection
Enhancement” http://docs.hp.com/hpux/ha ->
Serviceguard White Papers.
Cluster Configuration Worksheet
The following worksheet will help you to organize and record your
cluster configuration. This worksheet is an example; blank worksheets
are in Appendix F, “Blank Planning Worksheets,” on page 443.
Name and Nodes:
===============================================================================
Cluster Name: ___ourcluster_______________
Node Names: ____node1_________________ ____node2_________________
Maximum Configured Packages: ______12________
===============================================================================
Quorum Server Data:
===============================================================================
Quorum Server Host Name or IP Address: __lp_qs __________________
Quorum Server Polling Interval: _200000000_ microseconds