2008/3/31 Toshio Kuratomi <a.badger(a)gmail.com>:
Someone just reported that the wiki was down and I thought xen7
might
have crashed again. when I tried to ssh to it my connection timed out.
ping xen7 was fine. I serial consoled in and then immediately tried
to ssh to xen7 again. it worked. uptime showed that xen7 has been up
I've seen this on RHEL4 boxen for no apparent reason - no ssh or other
network connectivity (I forget whether ping works or not), connect to
serial console, login as root, and everything becomes fine again. I
have no way to reproduce this, other than to say it happens
occasionally. I wouldn't even know where to begin debugging it :(