Re: Implementing DNS on SP2

From: Green, Simon (Simon.Green_at_EU.ALTRIA.COM)
Date: 07/30/03

  • Next message: Raj Atwal: "Re: Implementing DNS on SP2" 
    Date:         Wed, 30 Jul 2003 16:11:38 +0200
To: aix-l@Princeton.EDU

    Regarding netsvc.conf, I'm in two minds.

    If one is going to use DNS, then surely it makes sense to _use_ it and use
    "bind,local". Otherwise, if you omit to make a change in /etc/hosts as well
    as DNS you could go badly awry.

    If I really can cut /etc/hosts down to the bone that's not very likely to be
    a problem, but we'll still have six distinct SP2s at the moment and over 100
    nodes, in a fairly fluid environment. (We're doing a lot of consolidation at
    the moment, so we keep moving things around and setting up temporary staging
    systems etc.)

    Simon Green
    Altria ITSC Europe Ltd

    AIX-L Archive at http://marc.theaimsgroup.com/?l=aix-l
    <http://marc.theaimsgroup.com/?l=aix-l&r=1&w=2> &r=1&w=2
    AIX FAQ at http://www.faqs.org/faqs/aix-faq/
    <http://www.faqs.org/faqs/aix-faq/>

    N.B. Unsolicited email from vendors will not be appreciated.

    -----Original Message-----
    From: Raj Atwal [mailto:atwalrs@YAHOO.COM]
    Sent: 30 July 2003 14:47
    To: aix-l@Princeton.EDU
    Subject: Re: Implementing DNS on SP2

    Thats pretty much the way I have done it with my SP customers. I keep a
    minimal /etc/hosts file which contains just AIX servers, and use DNS for
    stuff like NT and file/print servers. Besides removing your adminstrative
    overhead of maintaining the hosts file, another advantage I see is that you
    probably have a secondary DNS server out there in your network and therefore
    have some redundancy - which is never a bad thing :)

    Oh, and I'm sure you know this Simon but just in case, dont forget to set up
    you /etc/netsvc.conf file to use local before bind, or use NSORDER variable.

    Rgds

    Raj Atwal

    "Green, Simon" <Simon.Green@EU.ALTRIA.COM> wrote:

    What I would like to do is just have all of the AIX IP addresses in
    /etc/hosts - which would include some HACMP stuff - but ditch all the NT
    print servers, AS/400s etc.

    Simon Green
    Altria ITSC Europe Ltd

    AIX-L Archive at http://marc.theaimsgroup.com/?l=aix-l&r=1&w=2
    AIX FAQ at http://www.faqs.org/faqs/aix-faq/

    N.B. Unsolicited email from vendors will not be appreciated.

    > -----Original Message-----
    > From: Ferenc Gyurcsan [mailto:fgyurcsa@AVAILANT.COM]
    > Sent: 30 July 2003 14:06
    > To: aix-l@Princeton.EDU
    > Subject: Re: Implementing DNS on SP2
    >
    >
    > If you use HACMP, you will have to maintain the HACMP addresses in
    > /etc/hosts.
    > I would still maintain a minimal /etc/hosts, so that if the
    > DNS is down, you
    > still don't have to remember a bunch of critical IP addresses.
    > --Ferenc
    >
    > -----Original Message-----
    > From: Green, Simon [mailto:Simon.Green@EU.ALTRIA.COM]
    > Sent: Wednesday, July 30, 2003 9:00 AM
    > To: aix-l@Princeton.EDU
    > Subject: Implementing DNS on SP2
    >
    >
    > At the moment, most of our AIX boxes (nearly all of which are
    > SP2 nodes, but
    > a few are standalone), just use /etc/hosts for name
    > resolution. We are
    > considering moving to DNS. (There are a couple of AIX boxes
    > which use DNS,
    > plus all the PC network, so we're not talking about setting up new DNS
    > servers.)
    >
    > I've read through the manuals to refresh my memory, including the IBM
    > document on DNS for SP2, and it all looks pretty straight forward.
    >
    > Are there likely to be any unexpected pitfalls?
    >
    > Do those of you using DNS have a very small, fairly static
    > /etc/hosts file
    > or do you continue ! to maintain it as before?
    >
    > We haven't yet made up our minds whether to do this. What
    > reasons can you
    > think of for and against, besides removing the administrative
    > overhead of
    > maintaining /etc/hosts?
    >
    > Thanks,
    > Simon Green
    > Altria ITSC Europe Ltd
    >
    > AIX-L Archive at http://marc.theaimsgroup.com/?l=aix-l&r=1&w=2
    > AIX FAQ at http://www.faqs.org/faqs/aix-faq/
    >
    > N.B. Unsolicited email from vendors will not be appreciated.
    >

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