Help Center/ MapReduce Service/ User Guide (Ankara Region)/ FusionInsight Manager Operation Guide/ Security Management/ Account Management/ Changing the Password for a System Internal User/ Changing the Password for a Component Running User
Updated on 2024-11-29 GMT+08:00
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Changing the Password for a Component Running User

Scenario

It is recommended that the administrator periodically change the password for each component running user to improve the system O&M security.

Component running users can be classified into the following two types depending on whether their initial passwords are randomly generated by the system:
  • If the initial password of a component running user is randomly generated by the system, the user is of the machine-machine type.
  • If the initial password of a component running user is not randomly generated by the system, the user is of the human-machine type.

Impact on the System

If the initial password is randomly generated by the system, the cluster needs to be restarted for the password changing to take effect. Services are unavailable during the restart.

Prerequisites

You have installed the client on any node in the cluster and obtained the IP address of the node.

Procedure

  1. Log in to the node where the client is installed as the client installation user
  2. Run the following command to switch to the client directory, for example, /opt/client:

    cd /opt/client

  3. Run the following command to set environment variables:

    source bigdata_env

  4. Run the following command and enter the password of user kadmin/admin to log in to the kadmin console:

    kadmin -p kadmin/admin

    The default password of user kadmin/admin can be obtained by contacting the system administrator. The password will expire upon your first login. Change the password as prompted. Keep the password secure because it cannot be retrieved once lost.

  5. Run the following command to change the password of an internal component running user.

    cpw Internal system username

    Example: cpw hdfs

    User hdfs is an example. Replace it with the actual username.

    The password must meet the following complexity requirements by default:

    • Contains at least 8 characters.
    • Contains at least four types of the following: uppercase letters, lowercase letters, numbers, spaces, and special characters (~`!?,.;-_'(){}[]/<>@#$%^&*+|\=).
    • Cannot be the same as the username or the username spelled backwards.
    • Cannot be a common easily-cracked password.
    • Cannot be the same as the password used in the latest N times. N indicates the value of Repetition Rule configured in Configuring Password Policies. This policy applies only to human-machine accounts.

    Run the following command to check user information:

    getprinc Internal system username

    Example: getprinc hdfs

  6. Determine the type of the user whose password needs to be changed.

    • If the user is a machine-machine user, go to 7.
    • If the user is a human-machine user, the password is changed successfully and no further action is required.

  7. Log in to FusionInsight Manager.
  8. In the upper right corner of Homepage, click More and select Restart.
  9. In the displayed dialog box, enter the password of the current login user and click OK.
  10. In the displayed restart confirmation dialog box, click OK.
  11. Wait for message "Operation successful" to display.