Question
AES behind a Load Balancer
We have a setup where AES 7.1.7 monitoring nodes on pega 7.1.8. If we give the AES node url in the configuration settings it works fine. But if we setup AES node behind the Load Balancer and give the Load Balancer VIP name in the monitored node configuration, the monitored nodes are not able to send information to AES. AES server itself is accessible through the the browser but the monitored nodes logs say that they are not able to connect. Is AES behind a load balancer supported? What is workaround for this?
Reverse DNS lookup may be causing this. Refer to SA-6665 at https://pdn.pega.com/support-articles/multiple-nodes-shown-unavailable-aes-health-dashboard
- All systems (AES and monitored nodes) were running with the default option to do a ‘reverse DNS lookup’ on every incoming SOAP message and new browser session.
- Reverse DNS is of no value when PRPC is behind a load balancer
- A new dynamic system setting was added to turn off reverse DNS lookup.
Dynamic System Setting Pega-Engine prconfig/http/reversednslookup/default was added with a value of ‘false’