Medium
ELB
Regional
Application, Network and Gateway Load Balancers should span multiple Availability Zones
NIST
Description
This check ensures that Application, Network, and Gateway Load Balancers are configured to span multiple Availability Zones. This configuration increases the fault tolerance of the application.
Remediation
To configure Load Balancers to span multiple Availability Zones, follow these steps:
Steps
- Open the Amazon EC2 console at https://console.aws.amazon.com/ec2/.
- On the navigation pane, under LOAD BALANCING, choose Load Balancers.
- Select the Load Balancer.
- Choose the Description tab, and find the Availability Zones section.
- Add additional Availability Zones if only one is selected.
Compliance
NIST