joseph, i had the same thought as donginn -- having "madrid.ucmerced.edu" on both the 127.0.0.1 line *AND* the 10.0.0.2 line may well be confusing the system. as a general rule, i've taken to having the first line of the hosts file be "127.0.0.1 localhost.localdomain localhost" and that's it, and have the hostname on the line with the reachable IP addr. as for the ssh problems specifically, a verbose trace of the ssh connection may yield some more specific information than our best guess at the hosts file configuration -- try to add a "-v" to the ssh command and see where it's stalling out. also, how do you connect to this box from "outside?" from this hosts file, it looks like the head node has a 10. addr that it uses to talk to the cluster nodes, but no separate "public" facing address, as is customarily the case with clusters (a public facing addr on the head node, and a private network that the head node and all the compute nodes are on, so the compute nodes are not reachable directly from anywhere except inside the cluster). --Joe
________________________________ From: [EMAIL PROTECTED] on behalf of DongInn Kim Sent: Mon 8/11/2008 1:08 PM To: oscar-users@lists.sourceforge.net Subject: Re: [Oscar-users] Oscar installed - tests run - problem withheadnode Hi Joseph, I don't know how to avoid the OSCAR sanity checking of network configuration(especially /etc/hosts) because OSCAR does not like to have any actual hostname rather than localhost.localdomain. http://svn.oscar.openclustergroup.org/trac/oscar/wiki/InstallGuideNetwork#NIC This is from the OSCAR install guide. Anyway, I am wondering if the 127.0.0.1 line caused the problem on your test. I am not really sure though. Regards, - DongInn Joseph Norris wrote: > I was able to get oscar totally installed, tests run, X11 issues > resolved etc... Now I have the following issue. > > On head node I have ssh open on my fire wall When I log in from another > box within my network it takes between 30-40 seconds to get a password > prompt and from outside I get no password prompt at all. I discussed > this with another sys admin and he suggested that I look at resolv.conf > - however this has the same structure as the other redhat servers that I > administrate and I can reach the just fine. > > I was wondering if my hosts file is correct? or how I should > trouble-shoot this issue? > > Hosts file: > 127.0.0.1 madrid.ucmerced.edu madrid localhost.localdomain > localhos > t > 10.0.0.2 madrid.ucmerced.edu oscar_server oscar_server > nfs_osca > r pbs_oscar > > > # These entries are managed by SIS, please don't modify them. > 10.0.0.3 oscarnode1.ucmerced.edu oscarnode1 > 10.0.0.4 oscarnode2.ucmerced.edu oscarnode2 > 10.0.0.5 oscarnode3.ucmerced.edu oscarnode3 > 10.0.0.6 oscarnode4.ucmerced.edu oscarnode4 > > > Thanks. > > > ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ Oscar-users mailing list Oscar-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/oscar-users
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