Dataphin:Create an ArgoDB compute source

Procedure

1. On the Dataphin homepage, click Plan.

2. In the left-side navigation pane, choose Projects > Compute Source.

3. On the Compute Source page, click + New Compute Source and select ArgoDB Compute Source from the drop-down list.

4. On the Create Compute Source page, configure the parameters.

   a. Configure Basic Information.

   Parameter	Description
   Compute Source Type	Select ArgoDB.
   Compute Source Name	The naming conventions are as follows: It can contain only Chinese characters, letters, digits, underscores (_), and hyphens (-). It must be 64 characters or less.
   Compute Source Description	A brief description of the compute source.

   b. Configure Basic Cluster Information.

   Parameter	Description
   namenode	This field is pre-filled with the NameNode value from your compute settings and cannot be modified.
   core-site.xml, hdfs-site.xml, hive-site.xml, yarn-site.xml, Other Configuration Files	Upload the HDFS configuration files core-site.xml and hdfs-site.xml, the Hive configuration file hive-site.xml, and the yarn-site.xml file. If you have other configuration files, you can upload them in the corresponding section.
   Authentication Method	If your ArgoDB cluster uses Kerberos authentication, select Kerberos. Kerberos is a symmetric-key authentication protocol that supports Single Sign-On (SSO), allowing a client to access multiple services such as HBase and HDFS after a single authentication. If you select Kerberos authentication, you must upload a krb5 file or specify the KDC server address: Krb5 File Configuration: Upload a krb5 file for Kerberos authentication. KDC Server Address: The address of the Key Distribution Center (KDC) server, which assists with Kerberos authentication. You can specify multiple KDC server addresses, separated by commas (,).

   c. Configure parameters in the HDFS Connection Information section.

   Parameter	Description
   Execution Username, Password	The username and password for logging in to the execution machine to run MapReduce tasks and read from or write to HDFS. Important Ensure that the specified user has the required permissions to submit MapReduce tasks.
   Authentication Method	If your HDFS uses Kerberos authentication, select Kerberos. Kerberos is a symmetric-key authentication protocol that supports SSO, allowing a client to access multiple services such as HBase and HDFS after a single authentication. If you select Kerberos authentication, you must upload a keytab file and configure the principal: Keytab File: Upload the keytab file for Kerberos authentication. Principal: The Kerberos principal name. If you select no authentication, you must specify the username for accessing HDFS.

   d. Configure parameters in the ArgoDB Configuration section.

   Parameter	Description
   JDBC URL	Configure the JDBC connection address for Hive Server in the format jdbc:hive2://InceptorServerIP:Port/Database.
   Authentication Method	Select the authentication method for ArgoDB based on your ArgoDB configuration. Supported options are No Authentication, LDAP, and Kerberos: No Authentication: No authentication is required. LDAP: Provide the username and password for access. Kerberos: Upload a Kerberos authentication file and provide the principal.
   Execution User for Development Tasks	Based on the selected authentication method, configure the username and password, or upload a Kerberos authentication file and provide the principal for tasks in the development environment.
   Execution User for Periodically Scheduled Tasks	Based on the selected authentication method, configure the username and password, or upload a Kerberos authentication file and provide the principal for periodically scheduled tasks.
   Priority Task Queue	Choose how to specify the execution user for priority tasks. You can select Use Default Execution User or Custom. If you select Custom, you must configure different usernames for tasks with different priorities. Note Priority queues allocate resources by creating different YARN queues on the Hadoop cluster. Based on a task's priority level, it is submitted to the corresponding YARN queue.

   e. Configure ArgoDB Metadata Connection Information.

   Parameter	Description
   Metadata Acquisition Method	Acquire metadata from a metadatabase or from Hive Metastore (HMS). To use HMS, first upload the hdfs-site.xml, hive-site.xml, and core-site.xml files and configure the authentication method in the cluster configuration section.
   Database Type	Select the metadatabase type for ArgoDB. Currently, only ArgoDB is supported.
   JDBC URL	Enter the connection address for the corresponding metadata database in the format jdbc:postgresql://{host}:{port}/{database name}.
   Username, Password	Enter the username and password for logging in to the metadatabase. Note Ensure the specified account has the necessary data permissions for tasks to run as expected.

5. Click Test Connection.

6. After the connection test succeeds, click Submit.