vault/website/source/docs/secrets/databases/mssql.html.md

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docs	MSSQL - Database - Secrets Engines	docs-secrets-databases-mssql	MSSQL is one of the supported plugins for the database secrets engine. This plugin generates database credentials dynamically based on configured roles for the MSSQL database.

MSSQL Database Secrets Engine

MSSQL is one of the supported plugins for the database secrets engine. This plugin generates database credentials dynamically based on configured roles for the MSSQL database.

See the database secrets engine docs for more information about setting up the database secrets engine.

Setup

1. Enable the database secrets engine if it is not already enabled:

   $ vault secrets enable database
   Success! Enabled the database secrets engine at: database/
   

   By default, the secrets engine will enable at the name of the engine. To enable the secrets engine at a different path, use the -path argument.

2. Configure Vault with the proper plugin and connection information:

   $ vault write database/config/my-mssql-database \
       plugin_name=mssql-database-plugin \
       connection_url='sqlserver://sa:yourStrong(!)Password@localhost:1433' \
       allowed_roles="my-role"
   

   In this case, we've configured Vault with the user "sa" and password "Password!", connecting to an instance at "localhost" on port 1433. It is not necessary that Vault has the sa login, but the user must have privileges to create logins and manage processes. The fixed server roles securityadmin and processadmin are examples of built-in roles that grant these permissions. The user also must have privileges to create database users and grant permissions in the databases that Vault manages. The fixed database roles db_accessadmin and db_securityadmin are examples or built-in roles that grant these permissions.

3. Configure a role that maps a name in Vault to an SQL statement to execute to create the database credential:

   $ vault write database/roles/my-role \
       db_name=my-mssql-database \
       creation_statements="CREATE LOGIN [{{name}}] WITH PASSWORD = '{{password}}';\
           CREATE USER [{{name}}] FOR LOGIN [{{name}}];\
           GRANT SELECT ON SCHEMA::dbo TO [{{name}}];" \
       default_ttl="1h" \
       max_ttl="24h"
   Success! Data written to: database/roles/my-role
   

Usage

After the secrets engine is configured and a user/machine has a Vault token with the proper permission, it can generate credentials.

1. Generate a new credential by reading from the /creds endpoint with the name of the role:

   $ vault read database/creds/my-role
   Key                Value
   ---                -----
   lease_id           database/creds/my-role/2f6a614c-4aa2-7b19-24b9-ad944a8d4de6
   lease_duration     1h
   lease_renewable    true
   password           8cab931c-d62e-a73d-60d3-5ee85139cd66
   username           v-root-e2978cd0-
   

API

The full list of configurable options can be seen in the MSSQL database plugin API page.

For more information on the database secrets engine's HTTP API please see the Database secrets engine API page.