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SLB Multi-Zone with Multi-Zone Backend Servers

ID: rule:aliyun:slb-all-listener-servers-multi-zone
Severity: high

Description​

SLB instances should be multi-zone, and all server groups used by listeners should have resources added from multiple zones.

Reason for Violation​

Single zone deployment or single zone backend servers lack high availability and may lead to service interruption during zone failure.

Recommendation​

Configure SLB instances with master and slave zones, and ensure backend server groups include instances from different availability zones.

Resource Types​

  • ALIYUN::SLB::LoadBalancer