I haven't looked into the issues thoroughly, but I can report that we are
running Netview 7.1.3 on AIX 5.1 with a caching-only DNS server on the box. It
works quite well. Almost all of our TTL's are 10 minutes, so it shouldn't need
to contact the other DNS servers very often.
We have no issues related to this that I'm aware of.
-----Original Message-----
From: Todd H. [mailto:netview AT toddh DOT net]
Sent: Thursday, February 13, 2003 11:18 AM
To: nv-l AT lists.tivoli DOT com
Subject: [nv-l] NetView and DNS -- you using it? (was Re: RES: [nv-l]
/etc/hosts)
While we're mentioning it.... has anyone experienced specific gotchas
with NetView being picky about DNS response times? How many of you
are using DNS happily with NetView for AIX (and at what level?).
I've recently run into some signficiant issues under NetView 7.1.0
under AIX 4.3.3 ML10 (nmdemandpoll's hanging, map
syncrhonization--showing hosts green that ovtopodump shows as down).
We're working with support and have been alerted to the existence of
the /etc/netnmrc.pre directives/environment variables
RES_TIMEOUT=1
RES_RETRY=1
that can evidently be helpful in directing NetView to handle DNS
latency a bit better. It's not yet clear if these are going to solve
our issue. Resolution times using the AIX "host" command are
essentially immediate, as are nslookup queries.
I'm also aware of the Tivoli recommendation to run a caching-only DNS
server locally on the NetView box becaues NEtView is such a heavy
consumer of name resolution resources.
How many of y'all are leveraging DNS as a source of resolution for
the devices you're monitoring in NetView? How many are running a
caching-only server? Is anyone aware of DNS-related gotcha's in
7.1.0 that are fixed in 7.1.2 or 7.1.3? Our direction is to move
to the more recent releases, but production realities mitigate against
upgrading without a specific reason. 8-)
Can anyone share their experience? How are you handling name
resolution in your environment?
Best Regards,
Todd
Marcos Antonio Pezzutti Filho <pezzutti AT banespa.com DOT br> writes:
> Hi Dave,
>
> Besides everithing that my coleagues have said, I´d suggest you to look at
> /etc/netsvc.conf file and see what is the order of the terms ? If you want
> only to resolv name by /etc/hosts, you have to configure this file in this
> manner:
>
> hosts=local,bind
>
> -----Mensagem original-----
> De: reamd AT Nationwide DOT com [mailto:reamd AT Nationwide DOT com]
> Enviada em: Wednesday, February 12, 2003 17:45
> Para: nv-l AT lists.tivoli DOT com
> Assunto: [nv-l] /etc/hosts
>
>
> Hi All,
> 7.1.3 on AIX 5.1... Im trying to get netview to use the
> /etc/hosts for name resolution with no success.. I have removed the
> etc/resolv.conf which resulted in netview not allowing me to test ping,
> demand poll, ect... I get the same result if I just comment out the
> nameserver line. Any suggestions?
>
> Thank You,
> Dave
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