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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Thank you, Sir. My feeling is the same as yours. Even though the terracotta-server.log seems to indicate both clients are connecting, I’m suspecting one’s having
trouble communicating for some reason.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">I do know that both nodes work fine independently. I also know that, if the SP session’s destroyed then I hit the same IDP node a second time, it works fine,
and that’s even with the Terracotta DSO boot jar loaded. So, my individual two IDP nodes both seem to be working fine.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Looking at the terracotta-server.log and terracotta-client.log files, nothing jumps out at me other than this warning message:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoPlainText">2012-07-02 11:13:02,803 [L2_L1:TCComm Main Selector Thread_R (listen 0:0:0:0:0:0:0:0:9510)] WARN com.tc.net.core.CoreNIOServices - java.nio.channels.CancelledKeyException occured<o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Does that mean anything to anyone on this list?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">I’m not sure what I’m looking for in these log files to see that a session was successfully written or queried by a client. Can anyone give me any clues there?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">I fear that this is something super trivial, and I know we had it working before and can’t figure out for the life of me what broke it.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Thanks for any further advice.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Keith<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> users-bounces@shibboleth.net [mailto:users-bounces@shibboleth.net]
<b>On Behalf Of </b>Russell Beall<br>
<b>Sent:</b> Friday, June 29, 2012 4:42 PM<br>
<b>To:</b> Shib Users<br>
<b>Subject:</b> Re: A question about load balancers and Terracotta clustering<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Hi Keith,<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">There are a lot of factors involved in getting a cluster functional. It seems like you know what you are doing and are part of the way there.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Before you get into complicated functionality testing you should be sure that the basic functions are working.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">The simplest functionality test involves simply swapping nodes in the loadbalancer without shutting off servers. You shouldn't even have to kill the SP server if you simply access its logout link before trying to login to it again. If
this works, then you have clustered sessions.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">I have no clue as to what might be going wrong from your log snippet. My vague guess is that one of the tomcat servers is not completing its connection to the TC server and cannot access its session data. Each node should be usable for
login individually, while also being connected to TC, before you should try seeing if the login handler on one node can access a session created by another node.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Good luck. :-)<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Regards,<o:p></o:p></p>
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<p class="MsoNormal">Russ.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">On Jun 29, 2012, at 1:03 PM, Wessel, Keith William wrote:<o:p></o:p></p>
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<p class="MsoNormal"><br>
<br>
<o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">One other note: if I get the login screen from, say, node 1 then stop node 1’s Tomcat instance before clicking the login button, node 2 takes the login form
submission and successfully authenticates me. So, if I take a node down mid-authentication, the other picks up the session. This didn’t seem to work yesterday when node 1 wasn’t participating in the Terracotta cluster. So, I assume this is progress.</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Thoughts? Suggestions?</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Thanks,</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Keith</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span class="apple-converted-space"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> </span></span><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">Wessel,
Keith William<span class="apple-converted-space"> </span><br>
<b>Sent:</b><span class="apple-converted-space"> </span>Friday, June 29, 2012 2:00 PM<br>
<b>To:</b><span class="apple-converted-space"> </span>'Shib Users'<br>
<b>Subject:</b><span class="apple-converted-space"> </span>RE: A question about load balancers and Terracotta clustering</span><o:p></o:p></p>
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<p class="MsoNormal"> <o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Russ,</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">You got me past the first hurtle, and it was a pretty stupid one. Looks like, if the path to the TC boot jar in JAVA_OPTS points to a non-existent jar, no errors
are logged, and life goes on as if the jar was never mentioned. My experiements with a different Java version and forgetting to undo my changes in JAVA_OPTS got me here. I fixed that, regenerated the jar for good measure, and now we’re connecting.</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Now, if I log into node 2, shutdown tomcat on that node and destroy the SP session on the SP, then refresh in the browser, I get the generic error page from
node 1. I turned up logging in the IDP to debug for both edu.internet2.middleware.shibboleth and org.opensaml. It gets this far, then no more logs:</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">13:18:48.429 - DEBUG [edu.internet2.middleware.shibboleth.idp.profile.saml2.SSOProfileHandler:216] [session=f820cbb71ff0d31ba6b2f08493feba312e75c6c090fe80afd9ec3894b43e382f]
- Redirecting user to authentication engine at<span class="apple-converted-space"> </span><a href="https://[hostname%20removed]:443/idp/AuthnEngine">https://[hostname removed]:443/idp/AuthnEngine</a><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">13:18:48.500 - DEBUG [edu.internet2.middleware.shibboleth.idp.authn.AuthenticationEngine:209] [session=f820cbb71ff0d31ba6b2f08493feba312e75c6c090fe80afd9ec3894b43e382f] -
Processing incoming request<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">13:18:48.508 - DEBUG [edu.internet2.middleware.shibboleth.idp.authn.AuthenticationEngine:240] [session=f820cbb71ff0d31ba6b2f08493feba312e75c6c090fe80afd9ec3894b43e382f] -
Beginning user authentication process.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">And that’s where it stops. Is there another log facility I might consider turning up to see what happens next?</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Any other thoughts on what I might look at here?</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Keith</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span class="apple-converted-space"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> </span></span><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""><a href="mailto:users-bounces@shibboleth.net">users-bounces@shibboleth.net</a>
<a href="mailto:[mailto:users-bounces@shibboleth.net]">[mailto:users-bounces@shibboleth.net]</a><span class="apple-converted-space"> </span><b>On Behalf Of<span class="apple-converted-space"> </span></b>Russell Beall<br>
<b>Sent:</b><span class="apple-converted-space"> </span>Thursday, June 28, 2012 5:08 PM<br>
<b>To:</b><span class="apple-converted-space"> </span>Shib Users<br>
<b>Subject:</b><span class="apple-converted-space"> </span>Re: A question about load balancers and Terracotta clustering</span><o:p></o:p></p>
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<p class="MsoNormal"> <o:p></o:p></p>
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<p class="MsoNormal">Theoretically, what you are trying to do should work just fine. This type of thing in my clusters does work. I'd be inclined to suspect that the Terracotta server nodes are not correctly sharing their session data.<o:p></o:p></p>
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<p class="MsoNormal"> <o:p></o:p></p>
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<p class="MsoNormal">Instead of shutting down both the Terracotta server and the IdP Tomcat server, try just shutting down the Tomcat server only, or simply disabling it in your loadbalancer and then hitting the other node with a login request.<o:p></o:p></p>
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<p class="MsoNormal"> <o:p></o:p></p>
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<p class="MsoNormal">If this doesn't work either, then your sessions are not being shared.<o:p></o:p></p>
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<p class="MsoNormal"> <o:p></o:p></p>
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<p class="MsoNormal">Do the Terracotta server logs recognize when a Tomcat server client is connecting as a participant in the cluster? Are these connection logs all showing up on a single Terracotta server node?<o:p></o:p></p>
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<p class="MsoNormal"> <o:p></o:p></p>
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<p class="MsoNormal">Regards,<o:p></o:p></p>
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<p class="MsoNormal">Russ.<o:p></o:p></p>
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<p class="MsoNormal"> <o:p></o:p></p>
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<p class="MsoNormal">On Jun 28, 2012, at 1:58 PM, Wessel, Keith William wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"> <o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">I know quite a few of you out there have Shib clustered using Terracotta behind a load balancer. We’re in the process of moving our production cluster from round robbin DNS
to actual, real hardware load balancing. (much to my and many other folks’ relief).</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""> </span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">I’m doing some testing with our test cluster, and I’m noticing something odd. As recommended, we’re running a Terracotta cluster node on each of our two IDP nodes. I’m logging
into a test SP then restarting shibd and Apache to force reauthentication when I refresh the SP webpage in the browser. Before refreshing, I’ll shut down the IDP node that I used to log in the first time. I’ll then wait for Terracotta output on the other IDP
to say it’s taken over as the active node. In theory, if my persistent store and the Terracotta cluster is working, it’d seem my IDP session would still be valid. Session lifetime on the IDP has been left at the default 30 minutes. However, I’m getting the
login screen from the other IDP node at this point.</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""> </span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">So, if I lost anyone:</span><o:p></o:p></p>
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<p class="MsoNormal" style="text-indent:-.25in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">1.</span><span style="font-size:7.0pt"> <span class="apple-converted-space"> </span></span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">Log
into SP via Shib node 1</span><o:p></o:p></p>
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<p class="MsoNormal" style="text-indent:-.25in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">2.</span><span style="font-size:7.0pt"> <span class="apple-converted-space"> </span></span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">Once
logged in and back at the SP, shut down Tomcat and Terracotta on Shib node 1.</span><o:p></o:p></p>
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<p class="MsoNormal" style="text-indent:-.25in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">3.</span><span style="font-size:7.0pt"> <span class="apple-converted-space"> </span></span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">Restart
shibd and Apache on the SP.</span><o:p></o:p></p>
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<p class="MsoNormal" style="text-indent:-.25in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">4.</span><span style="font-size:7.0pt"> <span class="apple-converted-space"> </span></span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">Click
refresh in the browser which takes me to Shib node 2 via the load balancer</span><o:p></o:p></p>
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<p class="MsoNormal" style="text-indent:-.25in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">5.</span><span style="font-size:7.0pt"> <span class="apple-converted-space"> </span></span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">Instead
of having my existing session honored, I’m getting a login screen.</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">FYI, I don’t get the login screen if I just restart shibd and Apache then hit the same IDP node again that I hit the first time, so I know the SP isn’t doing forced re-auth.</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""> </span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">Am I overlooking something here? Is this working as designed? Or does it seem I have a Terracotta misconfiguration somewhere?</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""> </span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">Thanks for any help that anyone can offer.</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""> </span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">Keith</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""> </span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:13.5pt;font-family:"Helvetica","sans-serif"">--<br>
To unsubscribe from this list send an email to<span class="apple-converted-space"> </span><a href="mailto:users-unsubscribe@shibboleth.net">users-unsubscribe@shibboleth.net</a></span><o:p></o:p></p>
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<p class="MsoNormal"> <o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:13.5pt;font-family:"Helvetica","sans-serif"">--<br>
To unsubscribe from this list send an email to <a href="mailto:users-unsubscribe@shibboleth.net">
users-unsubscribe@shibboleth.net</a><o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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