Thanks to:
David Schiffrin <daves@adnc.com>
Frank Pardo <fpardo@tisny.com>
"Rodney C. Marable" <marable@firefly.net>
Jingyi Zhou <jzhou@airbridge.net>
Alejandro Lopez-Valencia <alejolo@sue.ideam.gov.co>
The general consensus is go with option #2.
Responses:
----------
a) The mail advantage to (2) below is that if your systems are
authoritative DNS with interNIC, you won't have to muck with
changing your domain records at interNIC. What I usually do is if I
need to use a new IP for the new machine, run it with both IP's for
a few days and turn off the old IP after I think I've got all the
changes made, so I can turn it back on if I missed something.
b) Option #2 looks better to me, on the grounds that two little
changes on one machine are easier to get right than many changes on
many machines.
With Option #1, you have to mess around with /etc/resolv.conf on
every machine, and maybe /etc/nsswitch.conf too, and maybe
/etc/hosts as well.
c) #2: This is quicker; makes sense if you think about it.
d) Change systemB's IP is much faster and easier.
e) The second option. There is an inherent time lag while all other
hosts flush their resolver cache unless all are slave DNS servers.
Original Question
-----------------
We are going to migrate systemA to systemB, and since systemA is our
primary DNS server. We are just wondering if it's faster to
1. modify all files/scripts that points to systemA to systemB and
changing the DNS config file, or
2. modify systemB's IP address and its hostname to sysemA?
All feedbacks are welcome,
Thanks,
Janet Leung, TACTech, Inc., Yorba Linda, CA 92887
This archive was generated by hypermail 2.1.2 : Fri Sep 28 2001 - 23:12:01 CDT