Re: [BProc] hosts file

[Daniel W. <wi...@ci...>]

Luke,

Try testing without bpsh (if you can).  We use this setup for a commercial
Flexlm licensed application, and it works.  We have full OS installs on the
internal compute nodes, however, so they only use hosts: files.

/etc/hosts has the *external* addresses of the flexlm servers (we have a
3-backup-server setup for Flexlm).  Routing all goes through the master
server (router set via DHCP).  Master server has NAT set up via iptables
script (iptable_nat module, set up FORWARD chain for appropriate ports,
enable MASQUERADEing in nat table (POSTROUTING chain), and "echo 1 >
/proc/sys/net/ipv4/ip_forward").

If you haven't done NAT before, there's a decent HOWTO in TLDP.

HTH,
Dan W.

On Thu, Jul 15, 2004 at 05:54:15PM -0500, Luke Palmer wrote:
> Hello,
> 
> I'm trying to do some host faking to make flexlm licensed software work
> on nodes.  Say I have a flexlm license that refers to the servers foo
> and bar.  I want to make nodes think that foo and bar are the master,
> which will then do NAT and send data to the real foo and bar.
> 
> So, on nodes here is what I have done.  nsswitch.conf looks like this:
> 
> passwd: bproc
> hosts: files bproc
> 
> and /etc/hosts is this:
> 
> 10.0.4.100 foo bar
> 
> Unfortunately, I see the following:
> 
> # bpsh 1 ping foo
> ping: unknown host foo
> 
> This trick would work on a normal linux box- can anyone see what I am
> doing wrong, or suggest an alternate approach?
> 
> Thanks
> -Luke
-- 
-- Daniel Widyono                      http://www.cis.upenn.edu/~widyono
-- Liniac Project,     CIS Dept.,    SEAS,    University of Pennsylvania
-- Mail: CIS Dept, 302 Levine     3330 Walnut St  Philadelphia, PA 19104