Re: [LUG] NFS, /etc/resolv.conf rather odd connection.

[Neil Stone <Neil@xxxxxxxxxxxxxx>]

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Andrew Rogers wrote:
> Neil Stone wrote:
>
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> > Andrew Rogers wrote:
> >
> > > Neil Williams wrote:
> > >
> > > > On Thursday 06 Nov 2003 10:05 pm, Neil Stone wrote:
> > > >  
> > > >
> > > > > Neil Williams wrote:
> > > > >  
> > > > >
> > > > > > On Thursday 06 Nov 2003 8:19 pm, Andrew Rogers wrote:
> > > > > >   
> > > > > >
> > > > > > > behaves perfectly with no long delays.
> > > > > > >       
> > > > > >
> > > > > >
> > > > > >
> > > > > > DNS timeout?
> > > > > >     
> > > > >
> > > > >
> > > > >
> > > > > the machine was unable to contact its default route... stupid or 
> > > > > what ?
> > > > >   
> > > >
> > > >
> > > >
> > > >
> > > > Same thought was in the back of my mind.
> > > >
> > > > Check the route on the machine trying to export the NFS mount.
> > > >
> > > > A bad gateway setting would cause the DNS to timeout. Removing 
> > > > /etc/resolv.conf only solves the problem by preventing NFS from 
> > > > using DNS.
> > > >
> > > > As you said, Andrew:
> > > > I known that from a previous setup incorrect DNS servers cause this 
> > > > problem.
> > > >
> > > > The problem is finding out which bit of the DNS setup is 
> > > > missing/failing.
> > > >
> > > >  
> > > I'm not 100% sure what to look for regarding the default route. Is 
> > > this hidden /proc somewhere? The closest thing I could find is the 
> > > file /etc/sysconfig/network which on a different 'pooter contains:
> > >
> > > NETWORKING=yes
> > > FORWARD_IPV4="yes"
> > > HOSTNAME=PC1.HOME
> > > DOMAINNAME=HOME
> > > GATEWAY="10.0.0.2"
> > > GATEWAYDEV="eth0"
> > >
> > >
> > > but on the NFS server:
> > >
> > > NETWORKING=yes
> > > GATEWAYDEV=eth0
> > >
> > > There's no GATEWAY but I can access webpages from the Internet from 
> > > the NFS server so can I assume that the default route is O.K? What is 
> > > the difference between GATEWAY and default route, if any? As I said 
> > > above I'm not 100% sure what the default route is.
> > >
> > > My IP address is assigned by a DHCP server and begins 141.163. so its 
> > > an Internet IP and not a private 192.168. or 10. address. Should it 
> > > have a default route?
> > >
> > > /var/lib/dhcp/dhclient-eth0.leases contains an 'option routers' 
> > > argument, which /proc or /etc file would this get stored in?
> > >
> > > Thanks
> > > Andrew
> >
> > *uses leet copy/paste skills*
> >
> > to find out the default route type
> >
> >     route -n
> >
> > just copy/paste the entire contents of that
> >
> > - -- Neil Stone
> >
> >     Flash on telnet://TR3.Org:3000  and  irc://irc.r-t-f-m.org.uk/DCLUG
> >
> > ****************************************************************************** 
> >
> >
> >     SELECT * FROM windows.users WHERE (clue != NULL AND clue > 0);
> >
> >     0 row(s) returned.
> >
> >
> > "Backups are for wimps. Real men upload their data to an FTP site and 
> > have everyone else mirror it."                    - Linus Torvalds
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> >
> > --
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> /sbin/route -n:
>
> Kernel IP routing table
> Destination     Gateway         Genmask         Flags Metric Ref    Use 
> Iface
> 10.0.0.0        0.0.0.0         255.255.255.0   U     0      0        0 
> eth1
> 141.163.72.0    0.0.0.0         255.255.252.0   U     0      0        0 
> eth0
> 127.0.0.0       0.0.0.0         255.0.0.0       U     0      0        0 lo
> 0.0.0.0         141.163.75.254  0.0.0.0         UG    0      0        0 
> eth0
>
> Regards
> Andrew


0.0.0.0         141.163.75.254  0.0.0.0         UG    0   0   0  eth0

141.163.75.254 is your default route

In the "Flags" section the "G" is a gateway


RE DNS Issue, see if you can ping each of the nameservers in turn and 
unless you are running your own DNS on the local machine, don't use 
127.0.0.1 as a nameserver entry.

HTH


Neil Stone

    Flash on telnet://TR3.Org:3000  and  irc://irc.r-t-f-m.org.uk/DCLUG

******************************************************************************

	SELECT * FROM windows.users WHERE (clue != NULL AND clue > 0);

	0 row(s) returned.


"Backups are for wimps. Real men upload their data to an FTP site and 
have everyone else mirror it."                    - Linus Torvalds

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