Load Balancing

Question 1

Which Load Balancers terminate connections, and which act solely as a “pass-through?”

Answer 1

ALB terminates connections. NLB and GLB are pass-throughs. CLB terminates L7 and passes-through L3 and L4.
“TCP” Passthrough is a reference to the NLB

Question 2

In what scenario would you NEED to use Proxy Protocol v2 on your NLB to ensure the source IP was passed?

Answer 2

When you specify IP addresses in the target AND you are using TCP/TLS. (Not needed if using UDP)

Question 3

What is an AWS Load Balancer Controller, and what are the prerequisites for installing one?

Answer 3

The controller allows creation and management of ALBs and NLBs directly from Kubernetes. Among the prereqs are an existing K8 cluster, and an existing IAM OIDC identity provider. Will need IAM role / policy

Question 4

What protocol will the Gateway LB and its registered virtual appliance instance exchange for application traffic?

Answer 4

GENEVE (Generic Network Virtualization Encapsulation)