About This Architecture

High-availability HashiCorp Vault deployment on Kubernetes uses a StatefulSet with three pods: one active and two standby replicas for automatic failover. The architecture spans vault-system and vault namespaces, with Ingress routing external traffic to Vault Service endpoints, while PersistentVolumeClaims ensure durable storage for secrets. RBAC controls via ServiceAccount, ClusterRole, and ClusterRoleBinding enforce least-privilege access, while NetworkPolicy isolates vault namespace traffic and HPA enables autoscaling. Fork this diagram on Diagrams.so to customize namespace topology, adjust replica counts, or integrate with your existing Kubernetes monitoring stack. The StatefulSet pattern with dedicated PersistentVolumes guarantees each Vault pod maintains state across restarts, critical for unsealing operations and HA consensus.

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How do I deploy HashiCorp Vault in high availability mode on Kubernetes with persistent storage and RBAC?

Deploy Vault using a StatefulSet with three pods (one active, two standby) across dedicated namespaces, configure PersistentVolumeClaims for durable storage, and enforce RBAC via ServiceAccount, ClusterRole, and ClusterRoleBinding. This diagram shows the complete topology including Ingress routing, NetworkPolicy isolation, and HPA autoscaling for production Kubernetes environments.