Running PostgreSQL on AKS with Premium SSD (StatefulSet + Azure Managed Disk)

In this tutorial, we’ll deploy PostgreSQL on AKS using: StatefulSet Azure Managed Disk (CSI) ReadWriteOnce (RWO) Premium SSD storage Persistent volume validation On Azure Kubernetes Service 🧠 Why Run PostgreSQL on AKS? Common use cases: SaaS apps with per-tenant DB Internal microservice database Dev/Test ephemeral environments Platform engineering demos Key benefits: ✅ Data survives pod restarts ✅ Azure-managed disk durability ✅ Zone-aware scheduling ✅ Snapshot + backup integration 🏗 Architecture Overview PostgreSQL runs as: StatefulSet Backed by Azure Managed Disk Using CSI driver Access mode: ReadWriteOnce Storage SKU: Premium_LRS Kubernetes dynamically provisions the disk. Step 1️⃣ — Verify StorageClass AKS automatically creates a default CSI storage class. Check it: kubectl get storageclass Then inspect: kubectl describe storageclass default Look for: Provisioner: disk.csi.azure.com skuName: Premium_LRS If you see Premium_LRS , you're using Premium SSD. Step 2️⃣ — Create Namespace