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SLB Master-Slave Server Group Multi-Zone

ID: rule:aliyun:slb-master-slave-server-group-multi-zone
Severity: medium
IaC Types: ROS, Terraform

Description​

The master-slave server group of SLB instances should have resources distributed across multiple availability zones.

Reason for Violation​

Single-zone master-slave servers create a single point of failure and reduce availability.

Recommendation​

Distribute master and slave servers across different availability zones.

Resource Types​

  • ROS: ALIYUN::SLB::MasterSlaveServerGroup
  • Terraform: alicloud_slb_master_slave_server_group