Ben Scott writes: > I'm not following the above. Where is the DHCP server for his > cluster coming from?
Somewhere on the corporate network, connected to via eth0. > And what good does having private addresses on > his node's eth1 interface do? These help ensure that his cluster traffic remains on the dedicated switch/hub that he has allocated exclusively for the cluster's network. > And how do the cluster nodes reach the Internet? Via eth0. If they really have to... > Are you thinking of having his node get multiple > Internet-facing addresses and doing proxy arp? Nope. All I am proposing is a quick and not-very-dirty solution that will get the cluster up and running, all with a minimum of hassle from IT. Let me put it this way: my solution is quick and does not involve setting up or configuring a DHCP server. If somebody happens to mention to IT that they are thinking about putting their own DHCP server into the network, I am fairly confident that this will get IT's attention.... > For within the cluster: I find that DHCP is so much nicer than > manually configuring everything, especially when things change (like > they always do), or a computer fails and needs to be replaced. > dnsmasq can easily provide name resolution tied into DHCP to eliminate > the need for manually propigating host files (yuck!), and there are a > few different ways to let DHCP assign static addresses if you want > that. Done properly, you can drop a new node into a network and have > it auto-install and auto-configure itself with a handful of > keystrokes. > > Granted, I've never worked on a compute cluster, but I don't know of > any reason why these tools shouldn't work there, too, assuming > commodity hardware (and it sounds like we are). I don't deny that you could do all of this, but again, with the exception of google, all of the clusters I am familiar with are relatively static. For the record, the clusters I have worked with have also purposefully been hard-to-reach on the network, just to help isolate their computrons from whatever gunk is on the regular network. Kind regards, --kevin -- GnuPG ID: B280F24E Don't you know there ain't no devil, alumni.unh.edu!kdc there's just God when he's drunk? http://kdc-blog.blogspot.com/ -- Tom Waits _______________________________________________ gnhlug-discuss mailing list gnhlug-discuss@mail.gnhlug.org http://mail.gnhlug.org/mailman/listinfo/gnhlug-discuss/
