Re: settingup new machine to replace an old one

horus schreef:
Have RHEL4 on a Dell 1900 now rsyncing to

RHEL5 2900........

I want to shut off the old machine and have the new one
take its place in a kinda transparent way, so in theory all
I have to do is swap the IP numbers and reboot?
And maybe wait 10 min. for the local router arp cache
to renew.....

Depends on what software is running on top of RHEL4.
Linux cosmos.sonoma.edu 2.6.9-5.ELsmp #1 SMP Wed Jan 5 19:30:39 EST 2005 i686 i686 i386 GNU/Linux

I mean things like Oracle 9i. So I mean which application(s) do you use.


OH, well, those are all running fine, Apache, Sendmail, Dovecot, ntpd, vsftpd, saslauthd, named....

I've tested each one personally (for 3 days of pounding)......

all the user data has been moved and is being rsync updated every 30 min.

My theory is, that swaping the IP's on each machine and rebooting them, with
a 10 min. pause for arp cache to clear from the network routers should do it.

But I've always enjoyed a 2nd and more opinion as I'm getting up in years and my logic isn't
what it used to be.

:-)-


Horus,


All the software you intend to run are distributed by Red Hat and supported on RHEL5 so it should work fine.

I do not know how long the arp cache timeout is. A 10 min downtime might not be enough, but let's see if a network specialist on this usenet group will tell us otherwise.


Kind regards,


Jan Gerrit Kootstra
.