SP configuration for Apache virtual hosts

[Peter Schober]

* Swartzentruber, Jeb A - swart2ja <swart2ja at jmu.edu> [2020-05-18 22:50]:
> When I browse to https://sp3.jmu.edu/ (the actual server name),
> everything works correctly. When I try https://dev.sp.jmu.edu/, auth
> happens correctly (including detecting an auth session from
> sp3.jmu.edu)

There should be no crossover of sessions from one vhost to another.
(Those are host cookies, not scoped to a shared domain, unless you
excpicitly changed that yourself.)

> but I am always returned to
> https://dev.sp.jmu.edu/Shibboleth.sso/SAML2/POST no matter what URL
> on that server I try to access (i.e. https://dev.sp.jmu.edu/dir1/,
> https://dev.sp.jmu.edu/dir2/).

I don't understand the problem:
https://dev.sp.jmu.edu/Shibboleth.sso/SAML2/POST is the correct
endpoint when trying to log in to URLs on that vhost, i.e.,
https://dev.sp.jmu.edu/dir1/ and https://dev.sp.jmu.edu/dir2/

-peter