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ALB Listener Has Backend Server

ID: rule:aliyun:alb-all-listenter-has-server
Severity: medium
IaC Types: ROS, Terraform

Description​

Ensures all ALB listeners are associated with a non-empty server group.

Reason for Violation​

A listener without backend servers cannot handle any traffic, leading to service unavailability.

Recommendation​

Associate the listener with a server group that contains healthy backend servers.

Resource Types​

  • ROS: ALIYUN::ALB::Listener
  • Terraform: alicloud_alb_listener