fly rebuilt
May 16, 2014by admin
I have rebuilt fly with a machine donated from Mt. Holyoke (thanks Jeremy and Ron!). It’s a Dell 2950 – dual quad-core 2.0Ghz Xeon with 32GB of RAM and a couple of 1TB hard drives we had lying around in the library server room. I upgraded to ROCKS 6.1.1 while I was at it, which isn’t all that much different from ROCKS 6.0, it turns out, but the ganglia interface is a little nicer, and it comes with lots of security updates, etc. I deleted some unused accounts, installed newer versions of some software (including tractor), and now I’m trying to compile emergent again.
That was MUCH easier than I thought it was going to be. It only took me a few hours – I thought it would take a week.
One lesson learned: Make sureΒ /etc/sysconfig/network has fly.local set as the hostname so that idmapd properly maps things to the .local domain. If you don’t, everything gets mapped to being owned by nobody when you log into the nodes. The first obvious symptom of this is that you get asked for a password when logging into a node, because SSH says that ownership doesn’t match on .ssh/authorized_keys, which it in fact doesn’t, because you are not nobody π