Using zones for NIS+ servers

Since we are now in a new building we had to install some new NIS+ servers (yes we do use NIS+ for our systems in my department as it gave us global access a long time before the rest of Sun got it). Since we have three main domains in our namespace we have a separate system to act as replica for each domain, plus one for the root domain, so that is four systems!

It struck us that this is a lot of tin to have sitting around just to serve NIS+ replicas, but experience of of NIS+ told us that having servers serving multiple domains could under rare circumstances lead to a deadlock. So we had a choice:

  • Install 4 systems each to serve a seperate domain.
  • Install 1 system and hope the the fact that the rpc.nisd is now multipreaded has resolved the deadlock
  • Install 1 system with Solaris 10 four N1 Grid Containers (zones) each running a seperate rpc.nisd unaware it is hosted on the same system as the others.

We opted of the zones and we have managed an instance success, we actually have more finely controlled replica servers and we have saved a (small) heap of cash by using just one system.

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This is the old blog of Chris Gerhard. It has mostly moved to http://chrisgerhard.wordpress.com

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