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SPS throwing errors:

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Article ID: 200064

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Updated On:

Products

CA Single Sign On Secure Proxy Server (SiteMinder) CA Single Sign On Federation (SiteMinder) SITEMINDER

Issue/Introduction

Users are getting a 500 error when they expect a login form to be served from IIS.  The correct proxy rules are in place to forward to IIS.

Request URI

:

/CertAuthV3/forms/PIVandUserPass.aspx

Error Type

:

SPS Exception

Error Code

:

Noodle_CouldNotConnectToBackEndServer

Error Message

:

No connection to backend server due to lack of processing threads at SPS.

 

Cause

The load balancer in front of Access Gateway was routing requests destined for the IIS host (on same physical host as Access Gateway) to Access Gateway.  This resulted in Access Gateway attempting to proxy to itself (because the load balancer was routing the backend connection request to Access Gateway instead of IIS), which it is not designed for.

Environment

Release : ALL

Component : SITEMINDER -ACCESS GATEWAY

Resolution

Adjusting the load balancer so that these requests were sent to IIS instead of Access Gateway resolved the issue.