oscar deleted the public address line from your hosts file?  
 
--Joe

________________________________

From: [EMAIL PROTECTED] on behalf of Joseph Norris
Sent: Mon 8/11/2008 2:00 PM
To: oscar-users@lists.sourceforge.net
Subject: Re: [Oscar-users] Oscar installed - tests run - problem withheadnode



This was the way oscar built my file and it was a bit odd to me also. I
have eth0 aimed at the outside IP address of  169.236.129.234.  eth1 is
aimed at the nodes.  Oscar built this host file in this way.  I will
modify it but leave the compute nodes in place.

Greenseid, Joseph M. wrote:
> 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.
>>
>>
>>
>>    
>
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--
Joseph Norris
Application Developer & Server Adminstrator
209-228-4576
[EMAIL PROTECTED]


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