Linux DSN Configuration
This section describes how to set up ODBC connectivity and configure DSNs on several Linux distributions: Debian-based systems, like Ubuntu, and Red Hat Linux platforms, like Red Hat Enterprise Linux (RHEL), CentOS, and Fedora.
Minimum Linux Versions
Here are the minimum supported versions for Red Hat-based and Debian-based systems:
Installing the Driver Dependencies
Run the following commands as root or with sudo to install the necessary dependencies:
apt-get install libc6 libstdc++6 zlib1g libgcc1
yum install glibc libstdc++ zlib libgcc
Here are the corresponding libraries required by the driver:
|Debian/Ubuntu Package||RHEL/CentOS/Fedora Package||File|
Installing the Driver
You can use standard package management systems to install the driver.
On Debian-based systems, like Ubuntu, run the following command with root or sudo:
dpkg -i /path/to/driver/setup/SnowflakeODBCDriverforUnix.deb
On systems that support the RPM package format, run the following command with root or sudo:
rpm -ivh /path/to/driver/SnowflakeODBCDriverforUnix.rpm
Licensing the Driver
Run the following commands to license the driver. To activate a trial, omit the <key> input.
cd /opt/cdata/cdata-odbc-driver-for-snowflake/bin/ sudo ./install-license.x64 <key>
Connecting through the Driver Manager
The driver manager loads the driver and passes function calls from the application to the driver. You need to register the driver with the driver manager and you define DSNs in the driver manager's configuration files.
The driver installation registers the driver with the unixODBC driver manager and creates a system DSN. The unixODBC driver manager can be used from Python and from many other applications. Your application may embed another driver manager.
Creating the DSN
Connecting to Snowflake
In addition to providing authentication (see below) set the following properties to connect to a Snowflake database:
- Url: Both AWS and Azure instances are supported. For example:
- AWS: https://myaccount.region.snowflakecomputing.com
- Azure: https://myaccount.region.azure.snowflakecomputing.com
Account is only required if your Url does not conform to the usual syntax containing the account name at the beginning. Snowflake provides the Account name needed in this case.
Optionally, you can set Database and Schema to restrict the tables and views returned by the driver.
Authenticating to Snowflake
The driver supports Snowflake user authentication, federated authentication, and SSL client authentication. To authenticate, set User and Password, and select the authentication method in the AuthScheme property.
Using Snowflake Password Authentication
Set User and Password to a Snowflake user and set AuthScheme to PASSWORD.
Using Snowflake Key Pair Authentication
The driver allows you to authenticate using key pair authentication by creating a secure token with the private key defined for your user account. To connect with this method, set AuthScheme to PRIVATEKEY and set the following values:
- User: The user account to authenticate as.
- PrivateKey: The private key used for the user such as the path to the .pem file containing the private key.
- PrivateKeyType: The type of key store containing the private key such as PEMKEY_FILE, PFXFILE, etc.
- PrivateKeyPassword: The password for the specified private key.
Using Federated Authentication
To use federated authentication, set the User and Password that you need to authenticate to your SSO identity provider and set the following properties to configure the authentication scheme.
Set AuthScheme based on your IdP (currently, the driver supports Okta only).
- OKTA: Set AuthScheme to OKTA and set SSOIDPDomain to the Okta SAML endpoint. For example: https://cdata-okta.okta.com.
- AZUREAD: Set AuthScheme to AZUREAD and set User to your AD user. When connecting, your browser will open allowing you to login to Azure AD to complete the authentication.
Using SSL Client Authentication
To authenticate with an SSL client certificate, set SSLClientCert, SSLClientCertPassword, SSLClientCertSubject, SSLClientCertType, and SSLServerCert.
Configuring Access Control
If the authenticating user maps to a system-defined role, specify it in the RoleName property.
Set the Driver Encoding
The ODBC drivers need to specify which encoding to use with the ODBC Driver Manager. By default, the CData ODBC Drivers for Unix are configured to use UTF-16 which is compatible with unixODBC, but other Driver Managers may require alternative encoding.
Alternatively, if you are using the ODBC driver from an application that uses the ANSI ODBC API it may be necessary to set the ANSI code page. For example, to import Japanese characters in an ANSI application, you can specify the code page in the config file '/opt/cdata/cdata-odbc-driver-for-snowflake/lib/cdata.odbc.snowflake.ini':
[Driver] AnsiCodePage = 932