WOW!, I don't think there is a simple answer for that given it is pretty general. Every vendor seems to have their own take on cluster management. IBM has HACMP for AIX, RedHat has Pirahna for Advanced Server. Sun, HP, DEC, etc all have there own as well. The concepts are usually similar. I don't know of a good general clustering resource. You may just want to pick an OS and read about it's cluster management. Be aware there are 2 general classifications of clusters, Highly Available where you are trying to provide a resource 24x7 and Computing where you are trying to utilize several CPU's to solve 1 problem. Beowulf.org is a good start for the later and the RedHat Advanced Server 2.1 Install and Configuration Guide may be a good start for the first, atleast to get the concepts. It is freely downloadable from redhat.com.

As far as single node management, "Essential System Administration" from O'Reilly is probably a good start.

Hope this helps a bit. Don't know if it is what you are looking for.