ElastiCache cluster has multiple nodes but automatic failover is turned off

What it checks

ElastiCache: replicas exist but automatic failover is disabled.

Where it applies

Terraform: aws_elasticache_replication_group

CloudFormation: AWS::ElastiCache::ReplicationGroup

How to fix it

1. Set automatic_failover_enabled = true. Verify multi_az_enabled = true so the failover target isn't in the same AZ as primary.

Frameworks

• AWS Well-Architected REL.5

These mappings are advisory, not an attestation of compliance.

Vendor documentation

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