[Hosting] Fatalpha proposal

[Tanner Lovelace]

Hi folks,

I've been thinking about the role of fatalpha now that we have the new
machines.  Fatalpha is currently running redhat 6.2 which has worked
great.  However, it would be much nicer if we could get it running
a 7.x version of redhat instead. Many of the things we're doing
(i.e. ldap, kerberos, logical volume management, etc...) apparently
work right out of the box in 7.x and need a bit of fiddling with
on 6.x.  So, what I'd like to propose is doing the following:

1. Temporarily copy all the home directories over to a partion
   on dargo.  This can either be a directory on the large drive 
   array, or I can create a actual partition using the LVM tools.
2. Back up all the configuration information (i.e. dns stuff,
   firewall settings, scripts, web settings, etc...
3. Move any mysql databases over to dargo.  I believe the only
   one we have right now is the membership database.
4. Save anything else we need to save (what have I forgotten?)
5. Bring down fatalpha and install 7.x (whatever the latest
   "x" is), wiping all the drives in the process.
6. Setup the disks that previously held the mirrors using 
   LVM and place /home there.
7. Copy the saved /home on dargo back to fatalpha.
8. Move mysql/web/etc... back to fatalpha.

What do people think about that?  Looking over fatalpha,
we could actually back up all of fatalpha on dargo (the
largest thing on fatalpha is the mirrors and they've already
been moved) so we make sure we don't lose anything.

We would basically end up with fatalpha being

1. The shell server
2. The web server
3. The mysql server
4. The dns server

Dargo would be the

1. Mirror server (ftp and http)

And moya would be 

1. kerberos/ldap server
2. e-mail server
3. mailing list server
4. imap server

What services have I forgotten?  Is there any reason we shouldn't
do this?  Note that I'm not envisioning doing this right now.
I want to get moya and dargo up and running first.  The earliest
I would consider doing this is sometime next week, and it would 
probably be after that.

Thoughts?

Thanks,
Tanner
-- 
Tanner Lovelace | lovelace@opennms.org | http://www.opennms.org/
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