Connect to and Visualize Live Elasticsearch Data in Tableau Prep

Tableau is a visual analytics platform transforming the way businesses use data to solve problems. When paired with the CData Tableau Connector for Elasticsearch, you can easily get access to live Elasticsearch data within Tableau Prep. This article shows how to connect to Elasticsearch in Tableau Prep and build a simple chart.

The CData Tableau Connectors enable high-speed access to live Elasticsearch data in Tableau. Once you install the connector, you simply authenticate with Elasticsearch and you can immediately start building responsive, dynamic visualizations and dashboards. By surfacing Elasticsearch data using native Tableau data types and handling complex filters, aggregations, & other operations automatically, CData Tableau Connectors grant seamless access to Elasticsearch data.

NOTE: The CData Tableau Connectors support Tableau Prep Builder 2020.4.1 or higher. If you are using an older version of Tableau Prep Builder, you will need to use the CData Tableau Connector for Elasticsearch. If you wish to connect to Elasticsearch data in Tableau Cloud, you will need to use CData Connect Cloud.

Getting Started

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Install the CData Tableau Connector

When you install the CData Tableau Connector for Elasticsearch, the installer should copy the TACO and JAR files to the appropriate directories. If your data source does not appear in the connection steps below, you will need to copy two files:

1. Copy the TACO file (cdata.elasticsearch.taco) found in the lib folder of the connector's installation location (C:\Program Files\CData\CData Tableau Connector for Elasticsearch 20XX\lib on Windows) to the Tableau Prep Builder repository:
   • Windows: C:\Users\[Windows User]\Documents\My Tableau Prep Repository\Connectors
   • MacOS: /Users//Documents/My Tableau Prep Repository/Connectors
2. Copy the JAR file (cdata.tableau.elasticsearch.jar) found in the same lib folder to the Tableau drivers directory, typically [Tableau installation location]\Drivers.

Connect to Elasticsearch in Tableau Prep Builder

Open Tableau Prep Builder and click "Connect to Data" and search for "Elasticsearch by CData." Configure the connection and click "Sign In."

Set the Server and Port connection properties to connect. To authenticate, set the User and Password properties, PKI (public key infrastructure) properties, or both. To use PKI, set the SSLClientCert, SSLClientCertType, SSLClientCertSubject, and SSLClientCertPassword properties.

The data provider uses X-Pack Security for TLS/SSL and authentication. To connect over TLS/SSL, prefix the Server value with 'https://'. Note: TLS/SSL and client authentication must be enabled on X-Pack to use PKI.

Once the data provider is connected, X-Pack will then perform user authentication and grant role permissions based on the realms you have configured.

Discover and Prep Data

Drag the tables and views you wish to work with onto the canvas. You can include multiple tables.

Data Cleansing & Filtering

To further prepare the data, you can implement filters, remove duplicates, modify columns and more.

1. Start by clicking on the plus next to your table and selecting the Clean Step option.
2. Select the field values to filter by. As you select values, you can see how your selections impact other fields.
3. Opt to "Keep Only" or "Exclude" entries with your select values and the data changes in response.

Data Joins and Unions

Data joining involves combining data from two or more related tables based on a common field or key.

1. To join multiple tables, drag a related table next to an existing table in the canvas and place it in the Join box.
2. Select the foreign keys that exist in both tables.

Exporting Prepped Data

After you perform any cleansing, filtering, transformations, and joins, you can export the data for visualization in Tableau.

1. Add any other needed transformations then insert an Output node at the end of the flow.
2. Configure the node to save to a file in the format of your choice.

Once the output data is saved, you can work with it in Tableau, just like you would any other file source.

Using the CData Tableau Connector for Elasticsearch with Tableau Prep Builder, you can easily join, cleanse, filter, and aggregate Elasticsearch data for visualizations and reports in Tableau. Download a free, 30-day trial and get started today.