I came across a Linux pakage that allows for load balancing with no change to any programs. It makes everything look like it runs on the same machine so that no other process is aware that it is running somewhere else. I haven't tried it but it looks promising
try http://www.mosix.org/
Simon Haddon
x3174
| Bal�zs Nagy <[EMAIL PROTECTED]>
Sent by: [EMAIL PROTECTED] 03/11/2000 04:03 PM
|
To: [EMAIL PROTECTED] cc: Subject: Re: Sharing SSLSessionCache in load balanced environment |
Jeffrey Burgoyne wrote:
> On Thu, 2 Nov 2000, Owen Boyle wrote:
>> "Wohlgemuth, Michael J." wrote:
>>
>>> I would like to implement some sort of load balancing for this site.
>>> ...the SSLSessionCache will need to be shared
>>> somehow across separate physical hosts.
the current proven approach is not to share the session cache, but
to inspect the packets, and route them to the same server for a
given session.
>>
>> We have a different approach and what we plan to do is to configure the
>> load-balancer so that all transactions within the same session are
>> routed to the same server.
>>
>> Since we haven't yet decided what to use for load balancing, we haven't
>> yet discovered how to do this... :-)
There are two routes: software or hardware.
Software: you can use an off the shelf product, e.g.
"Resonate" that will install on your severs or on a
separate server, and be careful in the case of sessions,
to direct them to the right place. I heard that TuboLinux
and RedHat also have a product that might do that...
Hardware: SlashDotOrg uses Alteon load balancers that do
well with SSL as well as with cookies. Other hardware
solutions are available from Cisco, Rockridge and probably
others.
> I have not played around with the session cache stuff, but a quick look on
> my system seems to indicate it is a file. Would it be possible to NSF
> mount this file among multiple machine making it shared? It would be
> useful for myself as we are adding a second server to our installation and
> all our pertinant files are on a shared HDS drive. If this could be shared
> as well, it would be quite helpful.
With NFS, you would have a serious bottleneck due to file locking,
and not even a shared RAID could help you there...
(PS: if you were kind enough to put your comments at the bottom
of the thread, it would make it easier to follow for others. I
took the liberty to cut it an paste it to the bottom...)
--
Cheers,
Bal�zs
thenewpush, LLC / 303-523-5729 / 720-283-2873
______________________________________________________________________
Apache Interface to OpenSSL (mod_ssl) www.modssl.org
User Support Mailing List [EMAIL PROTECTED]
Automated List Manager [EMAIL PROTECTED]
