Ensure ElastiCache subnet groups span multiple availability zones
Subnet groups should include subnets from multiple AZs to support Multi-AZ deployments and high availability.
Security Impact
Single-AZ subnet groups prevent Multi-AZ deployment, reducing availability and resilience to AZ failures.
How to Remediate
Create subnet groups with subnets from at least 2-3 availability zones in the region.
Affected Resources
Compliance Frameworks
How TigerGate Helps
TigerGate continuously monitors your AWS environment to detect and alert on this misconfiguration. Here's what our platform does for this specific check:
- Continuous Scanning
Automatically scans all Amazon ElastiCache resources across your AWS accounts every hour
- Instant Alerts
Get notified via Slack, email, or webhooks when this misconfiguration is detected
- One-Click Remediation
Fix this issue directly from the TigerGate dashboard with our guided remediation
- Compliance Evidence
Automatically collect audit evidence for High Availability, Business Continuity compliance
- Drift Detection
Get alerted if this configuration drifts back to an insecure state after remediation
Check Details
- Check ID
- aws-elasticache-16
- Service
- Amazon ElastiCache
- Category
- High Availability
- Severity
- MEDIUM
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