The conventional wisdom is that when the hosts file gets too big,
you ought to use a DNS, and to keep that responsive, you ought to
put a secondary nameserver right on the Netview server. If the large
hosts file contains names you don't need, you could of course prune it.
I know some customers shove a corporate hosts file around to all
systems nightly. Of course with a box that big, it's probably just the
names you need!
Cordially,
Leslie A. Clark
IBM Global Services - Systems Mgmt & Networking
Detroit
---------------------- Forwarded by Leslie Clark/Southfield/IBM on
06/14/2000 09:07 PM ---------------------------
Ray Schafer <schafer@tkg.com>@tkg.com on 06/14/2000 02:01:50 PM
Please respond to IBM NetView Discussion <nv-l@tkg.com>
Sent by: owner-nv-l@tkg.com
To: IBM NetView Discussion <nv-l@tkg.com>
cc:
Subject: Re: [NV-L] netmon and /etc/hosts ?
REIBENSCHUH Alfred wrote:
> Hi !
>
> the machine : ibm-rs6000 s7a 4-way 8gb memory 9gb swap 72gb disks
> the system : aix 4.3.2
> the program : tivoli/netview 6.0a
> the configuration: no DNS, a well established /etc/hosts (6000 lines
plus)
>
> on a " ovstart netmon ; netmon -M 53 " it takes hours
> to get something other into the trace-file than
> "event suppression installed"
This is something to check out before you attempt to attack the problem by
changing /etc/hosts:
Be sure that you do not have an /etc/resolv.conf file. If you have one,
and
especially if you have an entry to a nameserver in there, this could
account
for the delay: it will cause the systems resolver routines to query the
nameserver before it looks in /etc/hosts. It has to wait for an answer
from
the nameserver first. AIX resolver routines will, (unless you tell it
otherwise through /etc/netsvc.conf or the NSORDER environmental variable)
use DNS first IFF /etc/resolv.conf exists.
--
Ray Schafer | schafer@tkg.com
The Kernel Group | Distributed Systems Management
http://www.tkg.com
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