Hello Ralf,
There are 3 types of Elastic load balancer offered in AWS: Application load Balancer(Layer-7); Network Load Balancer(Layer -4); Classic Load balancer (both Layer-4,7). With the current understanding and requirement from the client, I can easily not choose network load balancer has this will not span across AZ's and work only on Layer 4.
And also after reading your comments about https and both the nodes of the Multisite cluster will listen only to https, The SSL termination cannot happen at the load balancer level meaning the traffic between the load balancer and the instance cannot be http as the PAM nodes will only respond to HTTPS. Is my understanding right here?
Between Application LB and Classic LB, Which one does CA recommend for a multi-site cluster( Active-Passive node)?
Additional question about passive node. The secondary site in passive mode will not server any end users https requests?
Thanks,
Manoj