On Sun, Sep 10, 2006 at 08:49:13PM -0400, Jeffrey Tadlock wrote: > Warren Togami wrote: > > Both before and after the data center migration to a new rack and new > > switch, we have occasionally been experiencing network trouble to > > app1.fedora.phx.redhat.com. > > > > Since this happened both before and after the new switch, could this > > perhaps be hardware trouble? > > > > Any opinions of what we should do about this? Perhaps... > > > > - More closely monitor, with ping logs over time? > > Closer monitoring would probably be good. Seeing what is happening from > the console when these unusual events occur might also provide some > insight as to what is really happening. From the IRC log it looks like > lmacken was able to produce some "oddities" with an nmap scan of app1 > and trying to flush iptables? I have experienced this issue with a couple of other machines in the colo, although I cannot remember exactly which ones (proxy[1-4] iirc). I have been successful in reproducing this issue by just `nmap app1` from bastion, and also `sudo /sbin/iptables -F` on app1 itself. I have yet to try these against app1 without any iptables chains loaded (since I cannot flush them). I'm still trying to get the Dell Remote Console switch stuff working so I can get into the KVM and flush them, but I haven't had much time to play with it. > The firewalls on these boxes have been a little unusual to say the least > in the time I have worked on these boxes. Maybe just getting some of > the Pyroman configs rolled out will clear some of this up. I'm ready to deploy pyroman on the app servers at any time, but I have been hesitating because I would like a safetynet just in case something explodes (either through the KVM or the cyclade consoles (anyone have the new information on this?)). luke
