Cloud Active/Passive Resiliency

Active/Passive resiliency patterns with automatic recovery mechanisms like Kubernetes allow you to accomplish automatic failover without manual intervention in the event of node or availability zone failure.

Combines With

• Federated Repositories
• Star Pattern
• Ensure you have perfected the Backup/Same-Site Restore pattern before combining it with more advanced patterns like this one

Problems Addressed

• Automatic recovery from application node failure
• Availability zone outages

Prerequisites

• Requires external PostgreSQL database
• Shared storage (AWS S3/Azure blob stores)

Factors to Consider

• Failover can take up to 10 minutes

Available Resources

We have the following comprehensive help topics and sample files to help implement this pattern:

• Resiliency and High Availability