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180 IBM Certification Study Guide AIX HACMP
To add a user on one or more nodes in a cluster, you can either use the AIX
mkuser command in a rsh to one clusternode after the other, or use the
C-SPOC
cl_mkuser command or the Add a User to the Cluster SMIT screen.
The
cl_mkuser command calls the AIX mkuser command to create the user
account on each cluster node you specify. The
cl_mkuser command creates a
home directory for the new account on each cluster node.
8.8.3 Changing Attributes of Users in a Cluster
On AIX systems, you can change any of the attributes associated with an
existing user account by using the
chuser command. Using the chuser
command, you specify the name of the user account you want to change and
then specify the attributes with their new values. If you use the SMIT Change
User Attributes screen, the complete list of user attributes is displayed and
you can supply new values for any attributes. The
chuser command modifies
the user information stored in the
/etc/passwd file and the files in the
/etc/security directory.
To change the attributes of a user account on one or more cluster nodes, you
can either use the AIX
chuser command in rsh to one cluster node after the
other, or use the C-SPOC
cl_chuser command or the C-SPOC Change User
Attributes SMIT screen. The
cl_chuser command executes the AIX chuser
command on each cluster node.
Both cluster nodes must be active and a user with the specified name must
exist on both the nodes for the change operation to proceed. Optionally, you
can specify that the
cl_chuser command continue processing if the specified
user name exists on any of the cluster nodes. See the
cl_chuser command
man page for more information.
8.8.4 Removing Users from a Cluster
On AIX systems, you remove a user account by using the rmuser command or
the SMIT Remove a User From the System screen. Using the
rmuser
command you specify the name of the user account you want to remove and
specify whether you want the user password and other authentication
information removed from the /etc/security/passwd file.
Do not use the
cl_chuser command if you have an NIS (Network
Information Service) database installed on any node in your cluster.
Note