Authentication settings for the Databricks ODBC Driver

This article describes how to configure Databricks authentication settings for the Databricks ODBC Driver.

The Databricks ODBC Driver supports the following Databricks authentication types:

Databricks personal access token

To create a Databricks personal access token, follow the steps in Databricks personal access tokens for workspace users.

To authenticate using a Databricks personal access token, add the following configurations to your compute settings and any special or advanced driver capability settings:

Setting

Value

AuthMech

3

UID

token

PWD

The Databricks personal access token for your workspace user

To create a DSN for non-Windows systems, use the following format:

[Databricks]
Driver=<path-to-driver>
Host=<server-hostname>
Port=443
HTTPPath=<http-path>
SSL=1
ThriftTransport=2
AuthMech=3
UID=token
PWD=<personal-access-token>

To create a DSN-less connection string, use the following format. Line breaks have been added for readability. The string must not contain these line breaks:

Driver=<path-to-driver>;
Host=<server-hostname>;
Port=443;
HTTPPath=<http-path>;
SSL=1;
ThriftTransport=2;
AuthMech=3;
UID=token;
PWD=<personal-access-token>

OAuth 2.0 tokens

ODBC driver 2.7.5 and above supports an OAuth 2.0 token for a Databricks user or service principal. This is also known as OAuth 2.0 token pass-through authentication.

To create an OAuth 2.0 token for token pass-through authentication, do the following:

  • For a user, you can use the Databricks CLI to generate the OAuth 2.0 token by initiating the OAuth U2M process, and then get the generated OAuth 2.0 token by running the databricks auth token command. See OAuth user-to-machine (U2M) authentication. OAuth 2.0 tokens have a default lifetime of 1 hour. To generate a new OAuth 2.0 token, repeat this process.

  • For a service principal, follow Steps 1-3 in Manually generate and use access tokens for OAuth M2M authentication. Make a note of the service principal’s OAuth access_token value. OAuth 2.0 tokens have a default lifetime of 1 hour. To generate a new OAuth 2.0 token, repeat this process.

To authenticate using OAuth 2.0 token pass-through authentication, add the following configurations to your compute settings and any special or advanced driver capability settings:

Setting

Value

AuthMech

11

Auth_Flow

0

Auth_AccessToken

The OAuth 2.0 token

To create a DSN for non-Windows systems, use the following format:

[Databricks]
Driver=<path-to-driver>
Host=<server-hostname>
Port=443
HTTPPath=<http-path>
SSL=1
ThriftTransport=2
AuthMech=11
Auth_Flow=0
Auth_AccessToken=<oauth-token>

To create a DSN-less connection string, use the following format. Line breaks have been added for readability. The string must not contain these line breaks:

Driver=<path-to-driver>;
Host=<server-hostname>;
Port=443;
HTTPPath=<http-path>;
SSL=1;
ThriftTransport=2;
AuthMech=11;
Auth_Flow=0;
Auth_AccessToken=<oauth-token>

For more information, see the Token Pass-through sections in the Databricks ODBC Driver Guide.

Databricks OAuth user-to-machine (U2M) authentication

ODBC driver 2.8.2 and above supports OAuth user-to-machine (U2M) authentication for a Databricks user. This is also known as OAuth 2.0 browser-based authentication.

OAuth U2M or OAuth 2.0 browser-based authentication has no prerequisites. OAuth 2.0 tokens have a default lifetime of 1 hour. OAuth U2M or OAuth 2.0 browser-based authentication should refresh expired OAuth 2.0 tokens for you automatically.

Note

OAuth U2M or OAuth 2.0 browser-based authentication works only with applications that run locally. It does not work with server-based or cloud-based applications.

To authenticate using OAuth user-to-machine (U2M) or OAuth 2.0 browser-based authentication, add the following configurations to your compute settings and any special or advanced driver capability settings:

Setting

Value

AuthMech

11

Auth_Flow

2

PWD

A password of your choice. The driver uses this key for refresh token encryption.

Auth_Client_ID (optional)

databricks-sql-odbc (default) You can find all the applicable applications under App connections settings in the Databricks Account Console See Enable custom OAuth applications using the Databricks UI.

Auth_Scope (optional)

sql offline_access (default)

OAuth2RedirectUrlPort (optional)

8020 (default)

To create a DSN for non-Windows systems, use the following format:

[Databricks]
Driver=<path-to-driver>
Host=<server-hostname>
Port=443
HTTPPath=<http-path>
SSL=1
ThriftTransport=2
AuthMech=11
Auth_Flow=2
PWD=<password>

To create a DSN-less connection string, use the following format. Line breaks have been added for readability. The string must not contain these line breaks:

Driver=<path-to-driver>;
Host=<server-hostname>;
Port=443;
HTTPPath=<http-path>;
SSL=1;
ThriftTransport=2;
AuthMech=11;
Auth_Flow=2;
PWD=<password>

For more information, see the Browser Based sections in the Databricks ODBC Driver Guide.

OAuth machine-to-machine (M2M) authentication

ODBC driver supports OAuth machine-to-machine (M2M) authentication for a Databricks service principal. This is also known as OAuth 2.0 client credentials authentication.

To configure OAuth M2M or OAuth 2.0 client credentials authentication, do the following:

  1. Create a Databricks service principal in your Databricks workspace, and create an OAuth secret for that service principal.

    To create the service principal and its OAuth secret, see Authenticate access to Databricks with a service principal using OAuth (OAuth M2M). Make a note of the service principal’s UUID or Application ID value, and the Secret value for the service principal’s OAuth secret.

  2. Give the service principal access to your cluster or warehouse. See Compute permissions or Manage a SQL warehouse.

To authenticate using OAuth machine-to-machine (M2M) or OAuth 2.0 client credentials authentication, add the following configurations to your compute settings and any special or advanced driver capability settings:

Setting

Value

AuthMech

11

Auth_Flow

1

Auth_Client_ID

The service principal’s UUID/Application ID value.

Auth_Client_Secret

The service principal’s OAuth Secret value.

Auth_Scope (optional)

all-apis (default)

To create a DSN for non-Windows systems, use the following format:

[Databricks]
Driver=<path-to-driver>
Host=<server-hostname>
Port=443
HTTPPath=<http-path>
SSL=1
ThriftTransport=2
AuthMech=11
Auth_Flow=1
Auth_Client_ID=<service-principal-application-ID>
Auth_Client_Secret=<service-principal-secret>
Auth_Scope=all-apis

To create a DSN-less connection string, use the following format. Line breaks have been added for readability. The string must not contain these line breaks:

Driver=<path-to-driver>;
Host=<server-hostname>;
Port=443;
HTTPPath=<http-path>;
SSL=1;
ThriftTransport=2;
AuthMech=11;
Auth_Flow=1;
Auth_Client_ID=<service-principal-application-ID>;
Auth_Client_Secret=<service-principal-secret>;
Auth_Scope=all-apis

For more information, see the Client Credentials sections in the Databricks ODBC Driver Guide.