Depends on how many hostnames I need. If I just need 2, using opposite duals is fun, {romeo,ruliet}.shakespeare.com
. 4 I almost always use cardinal directions or the seasons; {north,south,east,west}.domain.com
or {spring,summer,fall,winter}.domain.com
.
If I need a lot of potential subdomains, you can't beat the Greek or NATO alphabet, giving you 24 and 26 hostnames respectively which can be further enhanced by using the purpose of the server with the alphabet;
- beta-w02.domain.com # second webserver on beta
- beta-db02.domain.com # second db on beta