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Demo Vault Dynamic Secrets with PostgreSQL DB

Requirements

  • Docker engine

Running the demo

  • Bring up the services
docker-compose up -d
  • Set VAULT_ADDR to http://localhost:8200
export VAULT_ADDR=http://localhost:8200
  • Authenticate to the Vault server The root token is my-very-secure-token. Invoke
vault login

and enter the token. You should see something similar to

❯ vault login
Token (will be hidden):
Success! You are now authenticated. The token information displayed below
is already stored in the token helper. You do NOT need to run "vault login"
again. Future Vault requests will automatically use this token.

Key                  Value
---                  -----
token                my-very-secure-token
token_accessor       Z1bCSbdcB2hpBVNKqPBMgTLm
token_duration       ∞
token_renewable      false
token_policies       ["root"]
identity_policies    []
policies             ["root"]

Dynamic secrets

  • Obtain temporary DB credentials
vault read database/creds/my-role

You should see something similar to

❯ vault read database/creds/my-role
Key                Value
---                -----
lease_id           database/creds/my-role/35T7z6wxQrDI9vxt6RCqyuxj
lease_duration     1h
lease_renewable    true
password           Pp3II5kyP-pH6plI0Vm3
username           v-token-my-role-3WeK7qYp0cXt9D8L12zF-1673199871

Use the generated credentials to connect to the PostgreSQL server

psql -h localhost -U <username> postgres

Example:

❯ psql -h localhost -U v-token-my-role-vcdtHQwytCvVR6yk6zgW-1673200121 postgres
Password for user v-token-my-role-vcdtHQwytCvVR6yk6zgW-1673200121:
psql (14.6 (Homebrew))
Type "help" for help.

postgres=> \dt
Did not find any relations.
postgres=> \q

Static secrets

vault kv get my.secrets/dev