We have 2 authentication manager appliances configured. One in our production data center, the other in our DR data center. This has worked well for years.
A couple of months back the replica started sending the following alert via email: Attention! The following critical system event occurred: Failed to connect to LDAP Identity Source (domain controller name)
This is a sporadic event happening throughout the day. I cannot pin it down to a specific time nor anticipate it. It does occasionally cause users to have trouble logging in if they are being serviced by the replica instance and it is having these issues. We receive 2 copies of the email with the error in it each time it happens then it starts working again.
The appliance is installed on a vSphere cluster. I've positioned both the appliance and our domain controller on the same host and still see this issue. I contacted support and they insist it is a network issue but I'm not sure how to troubleshoot this further. They were not helpful at all.
Can we run packet captures on the appliance to the domain controller?
Looking for any advice here. There's no firewalls between the servers. Again running on the same hardware host. The only thing I can think of is that maybe packets are getting dropped when the traffic traverses the switch?
