Besides the builtin authentication methods, kyuubi supports custom authentication implementations of org.apache.kyuubi.service.authentication.PasswdAuthenticationProvider.

package org.apache.kyuubi.service.authentication
import javax.security.sasl.AuthenticationException
trait PasswdAuthenticationProvider {
  /**
   * The authenticate method is called by the Kyuubi Server authentication layer
   * to authenticate users for their requests.
   * If a user is to be granted, return nothing/throw nothing.
   * When a user is to be disallowed, throw an appropriate [[AuthenticationException]].
   *
   * @param user     The username received over the connection request
   * @param password The password received over the connection request
   *
   * @throws AuthenticationException When a user is found to be invalid by the implementation
   */
  @throws[AuthenticationException]
  def authenticate(user: String, password: String): Unit
}

Build A Custom Authenticator

To create custom Authenticator class derived from the above interface, we need to:

• Referencing the library

<dependency>
   <groupId>org.apache.kyuubi</groupId>
   <artifactId>kyuubi-common\_2.12</artifactId>
   <version>1.9.1</version>
   <scope>provided</scope>
</dependency>

• Implement PasswdAuthenticationProvider - Sample Code

Enable Custom Authentication

To enable the custom authentication method, we need to

• Put the jar package to $KYUUBI_HOME/jars directory to make it visible for the classpath of the kyuubi server.
• Configure the following properties to $KYUUBI_HOME/conf/kyuubi-defaults.conf on each node where kyuubi server is installed.

kyuubi.authentication=CUSTOM
kyuubi.authentication.custom.class=YourAuthenticationProvider

• Restart all the kyuubi server instances