On Wed, 10 Aug 2011 11:02:47 -0700, Michael Di Domenico <[email protected]> wrote: > > > > Node hostnames need to be resolvable whether they are up or down. > > I'm not sure dynamic dns is going to work very well with SLURM either. > > I would put all your hosts into /etc/hosts, and don't let their IP > > addresses change. > > Not that I have any plans to implement dynamic dns. Just out of > sheer curiosity, why is dns resolution a hard requirement for slurm? > Is there something in or about the code that's keyed on the hostname? >
Well I guess I wouldn't say that dns resolution is a hard requirement, however my guess is that it is not very well tested at all, and there will be corner cases that will break. (Strictly speaking you don't need dns per se, just the ability to resolve a hostname into an IP). I also remembered that there is a NodeAddr field available in slurm.conf, in which you can optionally specify an IP address. (However, again that implies that the host name -> IP mapping doesn't change) I'm not sure how well that is tested either. mark
