Grouper Users - Open Discussion List

["Mahabalagiri, Datta" <>]

Thank you all for your comments/suggestions.

It looks like Sticky sessions is the way to go, for now. 

Shibboleth IdP 2.x supports session clustering. We are evaluating
Terracotta  for this. 

Datta
UCLA

-----Original Message-----
From: Chris Hyzer 
[mailto:]
 
Sent: Tuesday, October 21, 2008 6:59 AM
To: GW Brown, Information Systems and Computing; Mahabalagiri, Datta;

Subject: RE: [grouper-users] RE: Session clustering in Grouper

Oh yeah, I forgot about that, you are right, the session data is
definitely not serializable, and it is not trivial to make it
serializable... so...  until we add that (if it is a requirement of
Terracotta), the sticky sessions way (where if an app server fails,
users need to log back in) that we do works well, and gives you good
scalability.  :)

Chris

> -----Original Message-----
> From: GW Brown, Information Systems and Computing
> [mailto:]
> Sent: Tuesday, October 21, 2008 4:39 AM
> To: Chris Hyzer; Mahabalagiri, Datta; 
> 
> Subject: Re: [grouper-users] RE: Session clustering in Grouper
>
> The UI is pretty standard and does depend on Jsessionid cookies. I
> doubt it
> would work straight off in a non sticky application server cluster - I
> haven't checked to see that all session data is serializable, however,
> we
> would be willing to look at making session data serializable.
>
> Terracotta looks interesting, but I've no idea if it would work well
> with
> Grouper. Currently this would be out of scope for the core Grouper
> project,
> however, if you were undertaking such a project we would be interested
> to
> know the results and would try to support you where practical.
>
> Gary
>
> --On 20 October 2008 21:37 -0400 Chris Hyzer 
> <>
> wrote:
>
> >
> >
> > I believe it is a pretty standard j2ee webapp.  Jsessionid cookie,
> > standard j2ee sessions.  At Penn we do several app servers with
> sticky
> > session load balancing...  so I think the session failover for you
> has a
> > good chance of working, try it out.  Btw, it is a struts webapp, so
> you
> > might be able to use url session handling or another method, but I
> > recommend just using the cookie based if possible...  Gary might
> correct
> > me though... J
> >
> >
> >
> > Regards,
> >
> > Chris
> >
> >
> >
> >
> >
> > From: Mahabalagiri, Datta 
> > [mailto:]
> > Sent: Monday, October 20, 2008 6:43 PM
> > To: 
> > 
> > Subject: [grouper-users] Session clustering in Grouper
> >
> >
> >
> > Hi,
> >
> >
> >
> > How does Grouper UI manage user sessions? Is it cookie based?
> >
> >
> >
> > We want to run multiple Grouper instances in Production to provide
> > failover and load balancing. I want to understand how is the session
> > managed in this case. Can we use a Session clustering  product like
> > Terracotta?
> >
> >
> >
> > I want to know if there is an alternative besides using sticky
> sessions.
> >
> >
> >
> > Thanks,
> >
> >
> >
> > Datta
> >
> >
> >
> >
> >
> >
>
>
>
> ----------------------
> GW Brown, Information Systems and Computing
>