Chapter 16: The Cluster Alias Subsystem (CLUA)


At first glance, the notion of a cluster alias seems straightforward. Simply conjure up a name and address to be used in the network that represents the cluster as a whole. What's the big deal? For starters, let's take a few steps back and remind ourselves why the nodes in a network are given names in the first place.

16.1 Network Node Names

The alternative to having names for network locations is to always use 32 bit (soon to be 128 bit with IPV6) IP addresses to refer to targets. Once you get used to them, IP addresses are not that difficult to remember, right? Which would be easier for you to remember, "frodo" or 192.128.168.34? Except for die-hard propeller heads, we'll assume most people find that names are easier to use and remember than IP addresses. At your site, you are probably using a Domain Name Service (DNS), specifically the Berkeley Internet Name Domain (BIND) service, to help with node name to IP address (and vice versa) translations. BIND supports the frequently used whatz.ting.ugot.com style of naming.




TruCluster Server Handbook
TruCluster Server Handbook (HP Technologies)
ISBN: 1555582591
EAN: 2147483647
Year: 2005
Pages: 273

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