[MPICH] MPICH2 on campus network, problems with DHCP?

[Reuti]

Hi,

Am 27.07.2006 um 07:26 schrieb Nathan Moore:

> Hello,
>
> I've downloaded and compiled MPICH2 on a small cluster of PowerPC's  
> running linux (YDL 4.1).  While I've been able to get mpd to run on  
> a single node, communication within the ring fails.  The error I've  
> seen with mpdcheck follows,
>
> [root at muscovey ~]# mpdcheck -l
>
>     **********
>     Your fully qualified hostname seems to be set to 'localhost'.
>     This generally means that your machine's /etc/hosts file  
> contains a line
>     similar to this:
> 127.0.0.1 mybox1 localhost.localdomain localhost
>     You probably want to remove your hostname from this line and  
> place it on
>     a line by itself with your ipaddress, like this:
> $ipaddr mybox1
>     **********
>
>     **********
>     Your unqualified hostname resolves to 127.0.0.1, which is
>     the IP address reserved for localhost. This likely means that
>     you have a line similar to this one in your /etc/hosts file:
>     127.0.0.1   $uqhn
>     This should perhaps be changed to the following:
>     127.0.0.1   localhost.localdomain localhost
>
> On my campus network, IP addresses are assigned by DHCP.  To my  
> knowledge, this precludes the sort of "normal" /etc/hosts file like  
> the following,

what is in /etc/nsswitch.conf as order for the name resolution? Did  
you tried, just to comment-out this "127.0.0.1" line? - Reuti


> [root at muscovey ~]# cat /etc/hosts.novel
> # Do not remove the following line, or various programs
> # that require network functionality will fail.
> 127.0.0.1               localhost.localdomain localhost
> 199.17.152.135          muscovey.workstations.winona.edu muscovey
>
> where 199.17.152.135 is found through ifconfig -a, and accordingly,  
> I seem to be stuck with an /etc/hosts like,
>
> [root at muscovey ~]# cat /etc/hosts
> # Do not remove the following line, or various programs
> # that require network functionality will fail.
> 127.0.0.1               muscovey localhost.localdomain localhost
>
> Is there a workaround that allows only hostnames to be specified?
>
>
>
>
> - - - - - - - - - - - - - - - - - - - - - - -
> Nathan Moore
> Physics
> Winona State University
> AIM:nmoorewsu
>