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Vault Configuration

Aurora uses HashiCorp Vault for secrets management. User credentials (cloud provider tokens, API keys) are stored in Vault rather than directly in the database.

How It Works​

  • Persistent storage: Vault uses file-based storage with data persisted in Docker volumes (vault-data, vault-init)
  • Auto-initialization: The vault-init container automatically initializes and unseals Vault on startup
  • Secret references: Stored in the database as vault:kv/data/aurora/users/{secret_name}, resolved at runtime

First-Time Setup​

1. Start Aurora​

make prod-prebuilt   # or: make prod-local to build from source

2. Get the Root Token​

docker logs vault-init 2>&1 | grep "Root Token:"

Output:

===================================================
Vault initialization complete!
Root Token: hvs.xxxxxxxxxxxxxxxxxxxxxxxxxxxx
IMPORTANT: Set VAULT_TOKEN=hvs.xxxxxxxxxxxxxxxxxxxxxxxxxxxx in your .env file
===================================================

3. Add to .env​

VAULT_TOKEN=hvs.xxxxxxxxxxxxxxxxxxxxxxxxxxxx

4. Restart Aurora​

make down
make prod-prebuilt   # or: make prod-local to build from source

Configuration Variables​

VAULT_ADDR=http://vault:8200
VAULT_TOKEN=hvs.xxxxxxxxxxxx
VAULT_KV_MOUNT=aurora
VAULT_KV_BASE_PATH=users

Testing Vault​

Via CLI​

# Write a secret
docker exec -it vault vault kv put aurora/users/test-secret value='hello'

# Read a secret
docker exec -it vault vault kv get aurora/users/test-secret

# List secrets
docker exec -it vault vault kv list aurora/users/

Via UI​

  1. Open http://localhost:8200
  2. Sign in with your root token
  3. Navigate to aurora/users/

Secret Storage Pattern​

Aurora stores user credentials using this reference format:

vault:kv/data/aurora/users/{user_id}/{credential_type}

The application resolves these references at runtime, never storing raw credentials in the database.

Vault Persistence​

Data is stored in Docker volumes:

VolumePurpose
vault-dataEncrypted secret storage
vault-initInitialization keys and tokens

These persist across container restarts. Use make prod-clean to remove them.

Production Considerations​

For production deployments:

  1. Don't use the root token - Create limited-access tokens
  2. Enable audit logging - Track secret access
  3. Use auto-unseal - Consider cloud KMS for unsealing
  4. Backup regularly - The vault-data volume contains all secrets

Troubleshooting​

"Vault is sealed"​

The vault-init container should auto-unseal. If not:

docker restart vault-init

"Permission denied"​

Check your token has the correct policies:

docker exec -it vault vault token capabilities aurora/users/

Connection refused​

Ensure Vault is running:

docker ps | grep vault
curl http://localhost:8200/v1/sys/health