HashiCorp Vault on Kubernetes#

Vault centralizes secret management with dynamic credentials, encryption as a service, and fine-grained access control. On Kubernetes, workloads authenticate using service accounts and pull secrets without hardcoding anything.

Installation with Helm#

helm repo add hashicorp https://helm.releases.hashicorp.com
helm repo update

Dev Mode (Single Pod, In-Memory)#

Automatically initialized and unsealed, stores everything in memory, loses all data on restart. Root token is root. Never use this in production.

helm upgrade --install vault hashicorp/vault \
  --namespace vault --create-namespace \
  --set server.dev.enabled=true \
  --set injector.enabled=true

Production Mode (HA with Integrated Raft Storage)#

Run Vault in HA mode with Raft consensus – a 3-node StatefulSet with persistent storage.