IOMETE Connection

IOMETE is a self-hosted data lakehouse platform built on Apache Iceberg, Apache Spark, and Kubernetes. It can be deployed on premise, in private or public cloud environments (AWS, Azure, GCP), or in a hybrid configuration.

Create a source

To connect to IOMETE:

Navigate to Data Catalog > Sources.
Select Create.
Provide the following:
- Name: The source name.
- Description: A description of the source.
- Deployment (Optional): Choose the deployment type.
  
  You can add new values if needed. See Lists of Values.
- Stewardship: The source owner and roles. For more information, see Stewardship.

Alternatively, add a connection to an existing data source. See Connect to a Source.

Add a connection

Select Add Connection.
In Select connection type, choose Relational Database > IOMETE.

Provide the following:

Name: A meaningful name for your connection. This is used to indicate the location of catalog items.
Description (Optional): A short description of the connection.
Dpe label (Optional): Assign the processing of a data source to a particular data processing engine (DPE) by entering the DPE label assigned to the engine. For more information, see DPM and DPE Configuration in DPM Admin Console.

JDBC: A JDBC connection string pointing to the IP address or the URL where the data source can be reached.

IOMETE uses Hive-compatible JDBC drivers. The format of your connection string is:

jdbc:hive2://<host>:<port>/<database>;transportMode=http;ssl=true;httpPath=cliservice

The variables are defined as follows:

<host> is the DNS or IP address of the IOMETE lakehouse endpoint.
<port> is the number of the TCP port to connect to (typically 443 for SSL connections).
<database> is the name of the database to connect to.

Example:

jdbc:hive2://my-lakehouse.iomete.com:443/default;transportMode=http;ssl=true;httpPath=cliservice

In Pushdown processing, select Profile data using pushdown processing and Evaluate data quality using pushdown processing respectively if you want to use pushdown processing for profiling or data quality evaluation.
1. Follow the instructions in IOMETE Pushdown Processing to configure pushdown processing.
In Additional settings:
- Select Enable exporting and loading of data if you want to export data from this connection and use it in ONE Data or outside of ONE.
  
  If you want to export data to this source, you also need to configure write credentials. See Connection credentials.
  
  Consider the security and privacy risks of allowing the export of data to other locations.

Add credentials

Different sets of credentials can be used for different tasks. One set of credentials must be set as default for each connection.

To determine whether you need to configure more than a single set of credentials, see Connection credentials.

Select Add Credentials.
Choose an authentication method and proceed with the corresponding step:
- Username and password credentials.
- Secret management service credentials.

Username and password credentials

Select Username and password credentials and provide the following:
- Name (Optional): A name for this set of credentials.
- Description (Optional): A description for this set of credentials.
- Username: The username for authentication with the IOMETE lakehouse.
- Password: The password for the specified user.
If you want to use this set of credentials by default when connecting to the data source, select Set as default.

See also Connection credentials.
Proceed with Test the connection.

Secret management service credentials

Select Username and password credentials and provide the following:
- Name (Optional): A name for this set of credentials.
- Description (Optional): A description for this set of credentials.
- Select a secret management service: Specify which secret management service should be used to retrieve the credential values. For more information, see Secret Management Services.
- Username: Enable Use secret management service and provide the name the username is stored under in your selected secret management service.
- Password: Enable Use secret management service and provide the name the password is stored under in your selected secret management service.
If you want to use this set of credentials by default when connecting to the data source, select Set as default.

See also Connection credentials.
Proceed with Test the connection.

Test the connection

To test and verify whether the data source connection has been correctly configured, select Test Connection.

If the connection is successful, continue with the following step. Otherwise, verify that your configuration is correct and that the data source is running.

Save and publish

Once you have configured your connection, save and publish your changes. If you provided all the required information, the connection is now available for other users in the application.

In case your configuration is missing required fields, you can view a list of detected errors instead. Review your configuration and resolve the issues before continuing.

Next steps

You can now browse and profile assets from your connection.

In Data Catalog > Sources, find and open the source you just configured. Switch to the Connections tab and select Document. Alternatively, opt for Import or Discover documentation flow.

Or, to import or profile only some assets, select Browse on the Connections tab. Choose the assets you want to analyze and then the appropriate profiling option.

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