Nathan Moore said... |[nmoore@honker ~]$ host honker |honker.workstations.winona.edu has address 199.17.152.193 | |[root@diepholz ~]# host diepholz |Host diepholz not found: 3(NXDOMAIN) Host talks to an NFS server. You have not changed your DNS to know about diepholz . |for diepholz, the ifconfig output follows, | |[root@diepholz ~]# ifconfig |eth0 Link encap:Ethernet HWaddr 00:50:8D:C1:E3:05 | inet addr:199.17.152.97 Bcast:199.17.152.255 Mask: 255.255.255.0 ... |I've also posted the /etc/hosts file below, | |[root@diepholz ~]# cat /etc/hosts |# Do not remove the following line, or various programs |# that require network functionality will fail. |127.0.0.1 diepholz localhost.localdomain localhost This should really be: 127.0.0.1 localhost.localdomain localhost 199.17.152.97 diepholz |So, I understand that the inter-cluster ssh works because of the hand- |curated /etc/hosts file quoted above, but I don't understand why the |two non-working machines are not broadcasting their IP/hostname pair. I'm not awar eof how they would broadcast it unless you actually have each system set up as a DNS server for its own name as a domain, which would be a bit strange, You need to update your DNS server, unless you're using dynamic DNS, which I haven't really messed with.