Changing an IBM Flex System Manager management node IP address

Before you change the management network IP address for a management node that is managing one or more chassis in centralized user management mode, make sure that you remove the chassis from centralized management mode. For managed chassis in decentralized user management mode, you must update the NTP configuration for each chassis and CMM with the new management node IP address.

Note: If you have already changed the management network IP address, and you did not change the user management mode to decentralized, see the troubleshooting topic Centralized user management problems for information about the required corrective action.

The following sections describe different procedures for configuring centralized and decentralized chassis when you change the management node IP address. If you have chassis in centralized user management mode and other chassis in decentralized management mode, use information from both of the following procedures but change the management node IP address only once.

Changing the management node IP address when managed chassis are in centralized management mode

To temporarily remove chassis from centralized user management mode, change the management network IP address, and re-enable centralized user management mode, complete the following steps:
  1. From the IBM Flex System Manager management software command-line interface, run the following command:
    smcli lsCentrallyManagedChassis
    The output from the command shows the universal identifier (UUID) for each chassis that is centrally managed.
  2. Run the following command:
    smcli rmCentrallyManagedChassis -u chassis_UUID
    where chassis_UUID is the UUID for the chassis that you want to change from centralized to decentralized user management mode. Repeat this step for every chassis that is centrally managed.
    Note: The rmCentrallyManagedChassis command does not unmanage the chassis.
  3. Change the management node IP address (Eth0, or the management network IP address) in the management software web interface:
    1. From the Home page, click the Administration tab.
    2. Under Configuration tasks, click Configure Network. The Network Configuration wizard opens.
    3. Select the management network and change the settings in the wizard for the new IP address.
    4. After you change the network configuration, click Finish.
  4. Restart the management node.
  5. To restore the chassis to centralized user management mode by using the management software CLI, run the following command:
    manageChassis --Uc -c <userid:password@1.1.1.1> --Cu <centralized user ID> --Cp <centralized password> --Rp <RECOVERY_ID password>
    where the variables in the command are:
    • userid:password@1.1.1.1 represents the administrator credentials and IP address for the target chassis
    • centralized user ID is an administrator user ID with supervisor authority on the management node. This account is used to request access to the CMM on behalf of the management node and managed nodes after the CMM is centrally managed.
    • centralized password is the password for the centralized user ID
    • RECOVERY_ID password is the password for the CMM recovery account, which has the user ID RECOVERY_ID.
    For more information about the command and its options, see manageChassis.

Changing the management node IP address when managed chassis are in decentralized management mode

If the management node manages one or more chassis in decentralized user management mode, complete the following steps to change the management node IP address and update the CMM NTP configuration with the new IP address:
  1. Change the management node IP address (Eth0, or the management network IP address) in the management software web interface:
    1. From the Home page, click the Administration tab.
    2. Under Configuration tasks, click Configure Network. The Network Configuration wizard opens.
    3. Select the management network and change the settings in the wizard for the new IP address.
    4. After you change the network configuration, click Finish.
  2. Restart the management node.
  3. For each chassis that is managed in decentralized user management mode, complete the following steps:
    1. Log in to the CMM command-line interface.
    2. Run the following command:
       ntp -T mm[p] -i <new_IP_address>
      where <new_IP_address> is the new management node IP address.
Parent topic: Configuring the IBM Flex System Manager management software