[BBLISA] ypbind and ICMP host unreachable?

[Rudie, Tony]

Oops, wrong operating system.  Your yp.conf entry should work.  It must be having trouble getting to the ypserver.      Sorry about that.

 - Tony Rudié 

-----Original Message-----
From: Scott Ehrlich [mailto:scott at MIT.EDU] 
Sent: Wednesday, October 24, 2007 10:26 AM
To: Rudie, Tony
Cc: bblisa at bblisa.org
Subject: RE: [BBLISA] ypbind and ICMP host unreachable?

On Wed, 24 Oct 2007, Rudie, Tony wrote:

> Are you running ypbind -broadcast?  If so, you have to have ypserv 
> running on the same subnet.  The alternative is to add IP addresses to 
> the (I think) /var/yp/binding/<domainname>/ypservers file, and then 
> ypbind will not run in broadcast mode.  We hate doing this because it's 
> another item to maintain locally on every client.

I manually configured /etc/yp.conf with domain MY_NIS_DOMAIN server 
my_nis_server

I'll try the IP address scheme you show, and see what that does.

>
> The other thing we are often able to do is get the network guys to add 
> "helper" statements to the routers so that ypbind DOES get routed to 
> specific (ypserver) hosts.  I'm considerably fuzzy about how they do 
> that, but I can get details if you're interested.
>

Both the test and production setups are on simple lans - server and 
clients are connected to an unmanaged switch, each with /etc/hosts acting 
as local dns.

Scott

>
> - Tony Rudié
>
> -----Original Message-----
> From: bblisa-bounces at bblisa.org [mailto:bblisa-bounces at bblisa.org] On Behalf Of Scott Ehrlich
> Sent: Wednesday, October 24, 2007 10:03 AM
> To: bblisa at bblisa.org
> Subject: [BBLISA] ypbind and ICMP host unreachable?
>
> Brief refresher again -
>
> RedHat Enterprise 5 server, CentOS 5 clients.  Test setup, everything works
> fine.  Production environment, clients cannot bind to yp on server.
>
> In trying to track down the ypbind problem I'm having, I discovered tcpdump
> produces ICMP host <yp server> unreachable only when ypbind is run.
>
> I'm doing some googling now to try and find an answer.
>
> I'd be happy to entertain any feedback this list has, too.
>
> Thanks.
>
> Scott
>
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