CMM access problems

Use one of these procedures to restore IBM® Flex System Manager management software access to a managed Chassis Management Module (CMM) after the CMM account credentials are locked out and the CMM is not accessible.

When you manage a CMM with an IBM Flex System Manager management node, the CMM account credentials are stored in the management node user registry. If you change a CMM password directly, in the CMM web or command-line interface, the management software continues to attempt to access the CMM with the old password. Eventually, unsuccessful access attempts by the management node might cause the CMM account to become locked out.

You can use one of the following procedures to reset the CMM credentials and restore access from the management node to the CMM:

Wait for the CMM lockout period to expire

  1. Revoke access to the CMM from the IBM Flex System Manager management software web interface:
    1. Log in to the management software web interface.
    2. From the Chassis Map view, right-click the chassis; then, click Security > Revoke Access.
    3. Click OK to confirm the revoke-access action.
  2. Wait for the CMM lockout period to expire. By default, the lockout period is one hour. However, if you or another user changed the default setting, the lockout period might be shorter or longer than one hour. In a separate browser window, try to log into the CMM to check if the lockout period has expired.
  3. After the lockout period expires, request access to the CMM from the IBM Flex System Manager management software web interface:
    1. From the Configure Access page, click Request Access.
    2. Enter the primary CMM user account credentials; then, click Request Access.

      Management node access to the CMM is restored.

Use a secondary CMM account to unlock the primary CMM account

This method requires a secondary, backup CMM user account with administrative permissions.

  1. Log in to the IBM Flex System Manager management software web interface.
  2. From the Chassis Map view, right-click the chassis; then, click Security > Revoke Access.
  3. Click OK to confirm the revoke access action.
  4. Log in to the CMM using the secondary, backup administrator user account that is not being used by the management node.
  5. Click Mgt Module Management > User Accounts.
  6. From the User Accounts page, select the primary user account that is currently locked out; then, click Unlock.
  7. From the IBM Flex System Manager management software Configure Access page, click Request Access.
  8. Enter the CMM account credentials; then, click Request Access.

    Management node access to the CMM is restored.

Unmanage, reset, and re-manage the CMM

Use this method only if the previous two procedures do not solve the CMM lockout problem.

Attention: When you unmanage a chassis, all of the chassis settings are deleted. You must reconfigure chassis and chassis-component settings after the chassis is re-managed. For more information about preparing a chassis to be unmanaged, including how to remove managed endpoints, see Unmanaging a chassis.
  1. Unmanage the chassis from the IBM Flex System Manager management software web interface:
    1. Log in to the IBM Flex System Manager management software.
    2. From the Home page, click the Initial Setup tab.
    3. Click Select Chassis to be Managed. The Management Domain page opens.
    4. Select the chassis with the locked-out CMM; then, click Unmanage. The Unmanage Chassis page opens.
    5. Click Unmanage. After the unmanage operation is complete, close the Unmanage Chassis page.
  2. Reset and reconfigure the CMM from the CMM web interface:
    1. With a straightened paper clip or similar tool, press the reset button for 15 seconds to reset the CMM to manufacturing defaults. For more information about the button and its location, see CMM LEDs and controls.
    2. Connect an Ethernet cable from a laptop or workstation directly to the CMM.
      Note: This is necessary to avoid connecting to a different CMM on the same subnet with the default IP address.
    3. Open a browser on the laptop or workstation and navigate to the CMM default IP address: https://192.168.70.100.
      Note: You might have to reconfigure your local host to be able to reach the subnet.
    4. Log into the CMM with the default user name USERID and password PASSW0RD. You are required to change the password immediately.
    5. Configure the CMM with the same settings as before the reset.

      If you saved the CMM configuration before the CMM was locked, you can restore the settings (see Restoring a saved CMM configuration).

      If you cannot restore the settings from a saved configuration, see Configuring the CMM using the web interface for information about how to configure the CMM.
    6. (Optional) Create a second administrative user account for use in future lockout situations.
  3. Manage the CMM from the IBM Flex System Manager management software web interface:
    1. From the Home page, click the Initial Setup tab.
    2. Click Select Chassis to be Managed. The Management Domain page opens.
    3. Select the chassis that you reset; then, click Manage. The Manage Chassis page opens.
    4. Select the authentication and IPv6 configuration settings for the chassis.
    5. Click Manage.
    6. Enter the new user account credentials for the CMM; then, click OK.

      After the chassis-management operation is complete, management node access to the CMM is restored.