Use the IBM® Flex
System Manager management software to
change centralized management settings for a chassis.
The option to manage a chassis with
the centralized management node user registry is available when you
first select a chassis for management on the Management Domain page
in the
IBM Flex
System Manager management software web
interface (see
Selecting chassis for management).
Important: To centrally
manage a chassis that is on a different subnet from the IBM Flex
System Manager,
make sure that you enable multicast SLP forwarding on the top-of-rack
switches as well as the router or routers in your environment. Some
top-of-rack switches disable multicast SLP forwarding by default.
See the documentation that was provided with your specific switch
or router to determine whether multicast SLP forwarding is disabled
by default and to find procedures for enabling it.
When you use the management software to
place a chassis under centralized management, the Chassis Management Module (CMM) is
configured to use the registry that is stored on the management node.
The local user accounts in the CMM registry
are disabled, and the new user account RECOVERY_ID is created
on the CMM for future authentication to the CMM (as
long as it is configured to use the centralized user registry on the
management node).
If you make changes to the disabled local CMM accounts (for example,
if you change a password), the changes have no effect on the RECOVERY_ID
account. In centralized user management mode, the RECOVERY_ID account
is the only CMM account that is activated and operational.
Note: The
first time you log in to the CMM with the RECOVERY_ID account, you
are prompted to change the password. The RECOVERY_ID password can
be changed only on the CMM.
After the CMM detects
the management node user registry, it uses the management node registry
configuration to provision all of the managed resources in the chassis
(except for network switches) so that they also use the central management
node user registry.
After a chassis is managed in centralized user management mode,
the management node becomes the account manager for the chassis; you
can log in to the CMM using accounts from the management node user
registry. If a chassis is in centralized management mode, and the
management node fails, you can use the RECOVERY_ID account to log
in to the CMM to take recovery actions to restore account-management
functions on the CMM until the management node is restored or replaced.
See Recovering chassis management with a CMM after a management node failure for more information.Important: After you centrally manage a chassis that contains
an IBM Flex System® V7000
Storage Node, you must create a new user group on the IBM Flex System V7000 Storage Node
for users with operator access. Otherwise, those users will not be
able to log in to the IBM
Flex System V7000 Storage Node.
For example, to create a new
user group on the IBM
Flex System V7000 Storage node, log in to the storage node and
use the command-line interface to enter the following command:
mkusergrp -name smdefault -role CopyOperator -remote
For
information about creating user groups on the IBM Flex System V7000 Storage Node
through the command-line interface, see Creating and working with user groups using the
CLI
For information about changing the
management network IP address when the management node is managing
chassis in centralized user management mode, see Changing an IBM Flex System Manager management node IP address.
For centralized user management troubleshooting,
see Centralized user management problems.