Ok,
very interesting to hear ways to setup large applications. But in other
words, the SSI script that shows the "For maintenence reasons..."
message could also be used as some kind of fail over?
Patrik
-----Ursprungligt meddelande-----
Från: Daniel López [mailto:[EMAIL PROTECTED]]
Skickat: den 30 maj 2001 15:15
Till: Orion-Interest
Ämne: Re: SV: proxying orion with IIS or iPlanet Web Server
Hi Patrick,
I agree with you, in our case we are using Apache as a proxy for other
reasons. One reason is that the Apache SSL certificate that we have
doesn't work with Orion (quite easy to fix) but the main reason is that
we use several instances of Orion, one per set of related applications,
and we use the proxy to "concentrate/redirect" the traffic from the port
80 to the appropriate application port. This way we have one single
point of failure, the proxy, but orion instances are independent of each
other and we can start/stop/move them without bothering the other
applications. Besides, we also have an SSI script inside the proxy that,
in case an application server is down, redirects the request to the
appropriate "For maintenance reasons..." page. Right now the proxy and
the orion instances are, some of them, in the same host, but in the
future I guess they won't be as next step for us is clustering. Anyway,
no Tomcat anywhere and no plans for it, at least as it is now.
We are quite happy with this set up, but we are in a situation were our
main worry is not speed, so we don't care about the small extra trip
between the proxy and the orion instance, but the number of
applications. With hot deployment you are supposed not to have to stop
the orion server but sometimes...
Just my 2ec,
D.
-------------------------------------------
Daniel Lopez Janariz ([EMAIL PROTECTED])
Web Services
Computer Center
Balearic Islands University
-------------------------------------------
> Patrik Andersson wrote:
>
> Just for the sake of asking,
>
> why do you have tomcat serving jsp/servlets and orion serving ejbs if
> they're both running on the same machine? For me, that sounds like
> asking for extra maintenance trouble. And another thing, from having
> one "single point of failure" you now have 3. If either one if these
> three applications decide to call it a day your whole application dies
> and that goes for having two machines running different software
> aswell. Why not use two or three machines all running orion and having
> them split the workload by clustering them?
>
> regards,
> Patrik
>
> -----Ursprungligt meddelande-----
> Från: Lachezar Dobrev [mailto:[EMAIL PROTECTED]]
> Skickat: den 30 maj 2001 08:50
> Till: Orion-Interest
> Ämne: Re: proxying orion with IIS or iPlanet Web Server
>
> Hya...
> Got a reply for you :).
> I use Apache as a front-end server. I use Orion to store
> my EJBs, and I use Jakarta-Tomcat to deploy servlets and
> JSPs. Just put the Tomcat and Orion on one and the same
> machine, start tomcat with a classpath, that includes the
> jars of the Orion server. Put a jndi.properties file
> somewhere (probably the web-inf/classes directory) and
> specify the jndi properties as for a remote application:
>
>
> java.naming.factory.initial=com.evermind.server.rmi.RMIInitialContextFactory
> java.naming.provider.url=ormi://127.0.0.1/<your
> application>
> java.naming.security.principal=<admin user>
> java.naming.security.credentials=<admin pass>
>
> Than you can safely read the Apache-Tomcat connectivity
> issues.
> I have used this with IAS instead of orion also. It
> worked.
> Apache and Tomcat are "cheaper" than other web servers :)
>
> May the shade of the tree strengthen you.
> Lachezar
>
>
> ----- Original Message -----
> From: "Andrew Diederich" <[EMAIL PROTECTED]>
> To: "Orion-Interest" <[EMAIL PROTECTED]>
> Sent: Wednesday, May 30, 2001 12:46 AM
> Subject: RE: proxying orion with IIS or iPlanet Web Server
>
> > I was afraid of that -- ISA is a minimum of $1,500. An
> expense for the free
> > webserver. I'll look into, iWS, but since iPlanet sells a
> proxy server,
> > too, I bet their webserver won't do it be default,
> either. Ah, well.
> >
> > Does this mean folks using Orion on NT/Win2k put Orion in
> their DMZ?
> >
> > --
> > Andrew
> >
> > -----Original Message-----
> > From: Juan Lorandi (Chile)
> [mailto:[EMAIL PROTECTED]]
> > Sent: Monday, May 28, 2001 13:40
> > To: Orion-Interest
> > Subject: RE: proxying orion with IIS or iPlanet Web Server
> >
> >
> > Dig into ISA server, It's the M$ reversed proxy solution.
> Or else, go into
> > the ISAPI filter world (best of luck)
> >
> > JP
