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KB-10917:Failed to perform failover due to IIS service always pointing to previous node

Privileged Access Service ,  

7 March,19 at 08:40 AM

Applies to: All version of on-premise Privileged Access Service

Problem:
During the failover in High availability environment, when attempting to switch from node 2 from node 1, failover will failed with “iis_pgsql_cluster Script” failed.
 
While access to “Services” console on node 1, “World Wide Web Publishing Service” is still running while service on node 2 is not able to start up. Meaning the service is still pointing to node 1 instead of node 2.
 
User-added image

When accessing to the Admin portal through browser, error “Failed to display website” will appear.

Root Cause:

The issue is due to the DNS record for the web service IP has been mapped as the same IP as one of the node.
 
For example:
Portal.sample.com has been mapped to 10.140.25.125 static.
When the cluster failover to node2 (10.140.25.126), all the service works fine on the cluster role IP: 10.140.25.129.
But once using the URL portal.sample.com, it redirected to IP: 10.140.25.125, which is the same IP for node1 (10.140.25.125), every service has been stopped.
So the browser shows: this site can't be reached - which is expected at this time because 10.140.25.125 cannot be reached due to the duplicate service using the same IP address.
 
Solution:

  1. Check the host file to see if there is any mis-configured IP mapping.

  2. Correct the DNS record to point to the correct IP address for each service and node.

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