How to configure connections for multiple clients in Impala?

2 years ago
William Carter
2 minutes

To connect multiple clients to Impala, the following configuration needs to be done:

  1. Enable Kerberos authentication on the Impala server. This requires configuring the KDC (Key Distribution Center) and realm settings on the Impala server. You can test if the authentication is working properly using the impala-shell command line tool.
  2. Install and configure the Kerberos client on each client machine. This includes setting up the Kerberos configuration file (krb5.conf) to specify the KDC and realm for the Impala server.
  3. Install the Impala shell on each client. The Impala shell is a command line tool used to interact with the Impala server and execute queries. You can download the Impala shell from the Cloudera website.
  4. Connect to the Impala server in the Impala shell using the following command.
  5. impala-shell -k -i :
  6. The -k parameter specifies that the Impala shell uses Kerberos for authentication.
    The -i parameter specifies the hostname and port of the Impala server.
  7. For example, to connect to an Impala server with the hostname impala.example.com and port 21000, you can use the following command:
  8. Connect to the Impala shell on the server impala.example.com using port 21000 with Kerberos authentication enabled.
  9. After the connection is successfully established, you can execute queries and other Impala operations in the Impala shell.

Please note that these steps assume that you have already installed and configured Kerberos correctly. If you are not familiar with Kerberos and Impala configuration, we recommend referring to relevant documentation or seeking assistance from Cloudera technical support.

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