Help Center> MapReduce Service> Developer Guide (Normal_Earlier Than 3.x)> Presto Application Development> Environment Preparation> Preparing a Development User
Updated on 2022-06-01 GMT+08:00
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Preparing a Development User

The development user is used to run the sample project. The user must have Presto permissions to run the Presto sample project. If Kerberos authentication is enabled for the MRS cluster, perform the following steps to prepare a development user. If Kerberos authentication is not enabled, skip the following steps.

Procedure

  1. Log in to MRS Manager.
  2. Choose System > Manage User > Create User to create a user for the sample project.
  3. Enter a username, for example, prestouser. Set User Type to Machine-machine, and select presto in User Group. Set Primary Group to presto and click OK.
  4. On MRS Manager, choose System > Manage User. In the Operation column corresponding to username prestouser, choose More > Download authentication credential, as shown in Figure 1. Save the file and decompress it to obtain the user.keytab and krb5.conf files. The two files are used for security authentication in the sample project.

    Figure 1 Downloading the authentication credential

    If you modify component parameter configurations, you need to download the client configuration file again and update the client in the running and commissioning environment.

Parent topic: Environment Preparation