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SLB All Listeners Have Backend Servers

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

Description​

When SLB load balancers exist, there should be at least one backend server resource configured.

Reason for Violation​

Listeners without backend servers cannot forward traffic, leading to service unavailability.

Recommendation​

Add alicloud_slb_backend_server or alicloud_slb_server_group resources to attach backend servers to the SLB.

Resource Types​

  • ROS: ALIYUN::SLB::LoadBalancer
  • Terraform: alicloud_slb_load_balancer