E-MapReduce:Configure the cluster administrator password

Procedure

1. Navigate to the password.db tab.

   1. Log on to the EMR on ACK console.

   2. On the EMR on ACK page, find your target cluster and click Configure in the Actions column.

   3. On the Configure tab, select > password.db.

2. Modify the configuration.

   1. On the password.db tab, set the admin parameter to a password generated by the htpasswd command.

      For example, use a password generated by the htpasswd -nBC 10 admin command.

      On macOS, the htpasswd command is available by default.

      On CentOS, run yum install httpd to install httpd, which includes the htpasswd command. On Ubuntu, run apt-get install apache2-utils to install the htpasswd command.

      Note

      The commands and packages may vary based on your operating system version and configuration.

   2. Click Save.

   3. In the dialog box that appears, enter a reason in the Execution Reason field and click Save.

3. Restart the Presto service.

   1. Click the Service Details tab.

   2. In the Components area, click Restart in the Actions column of TrinoCoordinator.

   3. In the dialog box that appears, enter a reason in the Execution Reason field and click OK.

   4. In the Confirm dialog box, click OK.

      After the service restarts, use the new password to access the Presto UI and submit jobs.