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Setting Up Connectors

This topic describes how to set up connectors within Harness DB DevOps.

Setting Up Connectors for Databases​

JDBC Connectors​

The JDBC connector accepts the following:

  • JDBC URL: The database URL (string)
  • Username: Username (string / secret)
  • Password: Password (secret)

It performs a test connection using a delegate with a delegate selector or any available delegate. Ensure the delegate has network access to the database.

The JDBC connector is used for connecting to your database instance.

URL Examples​

DatabaseJDBC URL Format
ORACLEjdbc:oracle:thin:@//{host}:{port}/{servicename}
POSTGRESjdbc:postgresql://{host}:{port}/{dbName}?sslmode=disable
COCKROACHDBjdbc:postgresql://{HOST}:{PORT}/{DBNAME}
SQLSERVERjdbc:sqlserver://{host}:{port};trustServerCertificate=true;databaseName={dbName}
MYSQLjdbc:mysql://{host}:{port}/{dbName}
MONGODBmongodb://{host}:{port}/{dbName}?authSource=admin
MongoDB Atlasmongodb+srv://{username}:{password}@{cluster}/{dbName}?authSource=admin
GOOGLE SPANNERjdbc:cloudspanner:/projects/{project-id}/instances/{instance-id}/databases/{database-name}?lenient=true
MongoDB SSLmongodb://{host}:{port}/{dbName}?tls=true&authSource=admin
POSTGRES SSLjdbc:postgresql://{host}:{port}/{dbName}?ssl=true
SQLSERVER SSLjdbc:sqlserver://{host}:{port};databaseName={dbName};encrypt=true;trustServerCertificate=false;
MYSQL SSLjdbc:mysql://{host}:{port}/{dbName}?useSSL=true
ORACLE SSLjdbc:oracle:thin:@(DESCRIPTION=(ADDRESS=(PROTOCOL=TCPS)(HOST={host})(PORT={port}))(CONNECT_DATA=(SERVICE_NAME={servicename})))
COCKROACHDB SSLjdbc:postgresql://{host}:{port}/{dbName}?sslmode=require

Setting Up MongoDB​

MongoDB connections in Harness DB DevOps support both self-hosted and cloud-based MongoDB instances.

Prerequisites for MongoDB​

  1. Connection Format:

    • Use mongodb+srv:// for MongoDB Atlas and cloud instances.
    • Use mongodb:// for self-hosted instances.

  2. Authentication:

    • Username/Password: Database user credentials
    • authSource: Must be specified (typically admin)
    • Database: Target database name must be included in the URL

  3. Network Access:

    • Ensure the delegate has network connectivity to the MongoDB cluster
    • For MongoDB Atlas, whitelist the delegate's IP address

MongoDB URL Requirements​

  • The connection string must include +srv for cloud instances
  • The target database must be specified in the URL path
  • The database user must have appropriate read/write permissions on the target database

Setting Up Google Spanner​

Google Spanner uses a unique JDBC URL format and does not require a password for authentication. Instead, authentication is handled via Service Account (SA) credentials.

Prerequisites for Google Spanner​

  1. Authentication:
    • Google Service Account (GSA) json key
    • The GSA must have the following roles:
      • roles/spanner.databaseAdmin
      • roles/spanner.databaseUser

Connector FAQs​

Why can't I connect to my Oracle database with a   sys as sysdba   username?​

Sometimes, users want to login to their database using the sys as sysdba username. To do so properly with Harness:

  1. Your JDBC URL should have the query parameter internal_logon=sysdba
  2. Your Username should be sys.

Go to Oracle's documentation for information about logging on as sys.