High-Availability Pod Replicas & Fault Isolation
Configure multiple application instance replicas across availability zones and nodes for high availability, fault tolerance, and load distribution.
Configure Replicas
Key Benefits
Multi-Zone High Availability (HA)
Distribute container replicas across independent cloud availability zones to withstand hardware and node failures.
Self-Healing Instance Recovery
Automatically detect crashed or unresponsive container replicas and replace them immediately with fresh instances.
Zero-Downtime Maintenance & Upgrades
Perform rolling updates across replica groups without ever taking the overall application service offline.
How It Works
Step 1: Set desired replica count in deployment settings
Specify the minimum number of running instance replicas for your application service (e.g., 3 or 5 replicas).
Step 2: Anti-affinity pod placement across nodes
Nife schedules container replicas onto separate physical host nodes and availability zones.
Step 3: Continuous health monitoring & load balancing
Incoming requests are balanced evenly across all healthy active container replicas.
Step 4: Automatic replacement of failed nodes
If a host node fails, Nife immediately schedules replacement replicas on remaining operational nodes.
Use Cases
Running 24/7 web applications that require 99.99% availability guarantees.
Distributing heavy concurrent HTTP traffic across multiple container instances.
Executing zero-downtime rolling deployments for high-volume REST APIs.
FAQs
Anti-affinity ensures that container replicas for the same service are placed on different physical host servers or availability zones to prevent single points of failure.
Nife health probes detect pod failure within seconds and automatically launch a replacement replica to maintain the configured count.
Yes. You can manually adjust desired replica counts via Dashboard/CLI or configure auto-scaling rules to adjust counts automatically.
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