I did a search on this, but didn't find anything....hope someone has a pointer or two...
I have an isolated cluster that requires rsh from one node to the next. The problem I'm seeing is a normal user takes a LONG time to get a prompt from typing "rsh node01" from head1 for example. But, I do get a prompt at the end of around 3-5 minutes.
To get even wierder - once I do rsh into node01, I can rsh with no delay back to head1.
-> Note that root can rsh immediately from any node to node with no trouble. <-
I think this has to do with a host reverse-dns lookup, but I'm not sure what else to do at this point. Here's what I've done so far:
- added rsh, rlogin, rsync, rexec to /etc/securetty
- added "ALL:192.168.5.0/255.255.255.0" to /etc/hosts.allow
- added a .rhosts file in /home/anyuser
- ensured that /sbin/chkconfig --list shows iptables as off
- ensured no unreachable DNS servers are in /etc/resolv.conf
I'm stumped, any ideas?