Re: Servers as appliances

[Tonnesen Steve <tonnesen@cmsd.bc.ca>]

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On Sat, 22 May 1999, Michael A Hamblin wrote:

> The biggest problem I see is for a medium to large sized school, services
> will have to be broke up onto other machines to handle the load. For
> instance a machine for each of these basic serving operations:
> 
> Authentication server
> bootp/dchp server
> Web server
> NFS/SAMBA
> IMAP/POP and SMTP
> Print server
> Firewall
> Web proxy/cache/filter
> IP Masqerader (when there aren't many free IPs)

9 servers in one school?  I must be dreaming.  Most I have is 3 for a
school of a little over 1000 students.

I think I would work this by installing roughly the same software on all
the servers and just modifying the startup links to start the necessary
services.  Big advantage here is that if your web proxy server's drive
fails, you can just add the startup link on your web server, fiddle with
some ip aliases and the service is back online.

On K12ADMIN, I have a section for editing servers.  I could just have the
above list of services, and you just check off the ones that that server
should be running.  The startup scripts would then be modified
accordingly.  If the appropriate software isn't installed, a warning can
be sent that it needs to be installed.

Steve.

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