GKE High Availability & Autoscaling
Engineering documentation for the MintDeals GKE cluster HA design. Covers multi-zone autoscaling, PodDisruptionBudgets, regional persistent disks, PriorityClasses, capacity buffers, HPA tuning, and the PVC migration runbook. Written for DevOps engineers and on-call responders.
| Responsible | Juan Palomino |
|---|---|
| Last Update | 04/08/2026 |
| Completion Time | 2 days 11 hours |
| Members | 1 |
PVC Migration Procedure
Architecture Overview
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Cluster Architecture
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Why HA Matters for This Cluster
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Node Pool & Cluster Autoscaling
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Multi-Zone Node Pool
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Autoscaler Cold-Start & Capacity Buffers
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Pod Disruption Budgets
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PDB Design for Multi-Replica vs Single-Replica
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Storage: Regional Persistent Disks
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PVC Migration Procedure
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Why standard-rwo Breaks Multi-Zone HA
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Workload Priority & Scheduling
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PriorityClasses: Protecting Critical Pods
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HPA & Peak Traffic Scaling
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Odoo HPA Configuration
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Maintenance & Upgrades
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Maintenance Windows & Node Upgrades
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PVC Migration Runbook
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Step-by-Step PVC Migration
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Monitoring & Troubleshooting
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Health Checks & Common Issues
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References & Further Reading
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