Creating or disabling the default UNIX user account

Reason for creating a default UNIX user account

You should create a default UNIX user account if there are users who need to connect to the storage system occasionally but do not need to have individual entries in the UNIX password database. These users can use the default user account to connect to the storage system.

How the default user account works with quotas

If quotas are enabled, the default user account is subject to quota restrictions in the same way as other users. For example, if the default user name is pcuser and a default user quota applies to the /vol/vol0 volume, pcuser is restricted by this default user quota. For more information about quotas for the default user, see the section about how disk space owned by default users is counted in the chapter about disk space management using quotas in the Storage Management Guide.

Prerequisites for accessing the storage system as a default user

For a user to connect to the storage system using the default user account, the user must meet the following prerequisites:

The user is authenticated.
The user is in a trusted domain.
The user name does not map to a null string in the /etc/usermap.cfg file.

Default UNIX user name

The default UNIX name of the default user is pcuser. You can specify another name through the wafl.default_unix_user option. If this option is set to a null string, no one can access the storage system as a UNIX default user. That is, each user must have an account in the password database before they can access the storage system.

Creating or disabling a default user account

To create or disable a default user account, complete the following steps.

Step	Action
1	If...	Then...
	You do not want any user to connect to the storage system as a default user	Go to Step 2.
	You accept the default name for the default user account, which is pcuser	Go to Step 4.
	You want to use a name other than pcuser for the default account	Go to Step 3 and then Step 4.
2	Enter the following command: options wafl.default_unix_user "" You are done. Result: Only users with accounts in the password database can access the storage system.
3	Set the `wafl.default_unix_user` option to another name. Example The following command changes the default user name to someuser: options wafl.default_unix_user someuser
4	Create a default user account in the UNIX password database. For example, if you use pcuser as the default user account name, create an entry either in the NIS password database or the /etc/passwd file for pcuser.