For the last while year _everything_ (web server, smtp/pop3 server, shell
access, radius, etc) has been run off of one Sparc station 20 running
Solaris. The problem with this, is that there is to much for this sun
machine to handle, the loads get real high and is not good.
What I want to do, is for the time throw a Linux box in here to take over
1/2 the work so it provides faster and more steady services. The problem
is, there is over 2000 users on the system, and there is really an option to
take the server down.
What I wanted to do is make the Linux box into a mail server running
sendmail and pop3, this is where about half the load on the machine is, it
would really free a lot of resources on the Sun machine if this was taken
off and a either dual pent pro 200MHZ or pentIII with 256 RAM scsi linux
system should be able to provide 2000 users with sending/recieving email
(right?).
The thing is, if you send [EMAIL PROTECTED], the mx record points it to the
linux boxes, the linux will say "user bob not found" since the linux and sun
box have differant /etc/passwd files. So there where has to be a secure way
to sync the sun /etc/passwd (and /etc/shadow) file to the linux /etc/passwd
file, so they could receive mail on the linux box as well as pick it up
though pop3. Also might have to sync the radius users file to the linux
radius users file. Have sort of the Solaris box as the "master" and linux
box as the "slave" mail server off of it.
I have been looking into NIS+ and OpenLDAP and not sure which would be
better suited at this job.
I won't really need NFS since the Linux box has a couple 10,000RPM scsi
cheatah drives connected up and has really good i/o and the solaris box has
been running into i/o bottlenecks just because there is to much stuff on it.
Also the machine won't be in the same place, they will be connected via
direct line , so NFS isn't really needed here and would be more of a
degardation in performance most likely.
I was wondering if I was going about this right? Would Sun NIS+ be
compatiable with Linux NIS? Does OpenLDAP work with Solaris 2.3? What is
more suited for this job? Also everything would have to be encrypted
between the 2 since the connection between them won't be considered
"trusted", it is probably safe, but I won't want to take any chances. Also
there would have to be a further option avaiable to throw a 3rd of even 4th
unix box in here if after time 2 boxes can't handle the load.
Has anyone did anything like this before? The only experince I have is most
everything is run off 1 single unix box that does or tries to do everything.
Got any good docs that could go into detail and theogry about this?
Thanks,
Jack
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