Solaris Naming Administration Guide

FNS and Naming Service Consistency

As a system administrator one of your tasks is to maintain consistency between FNS and the underlying naming service by ensuring that the contents of FNS contexts and the files, maps, or tables of the underlying naming service correspond.

When you initially set up and configure your FNS namespace with the fncreate command as described in Solaris Naming Setup and Configuration Guide, fncreate ensures that FNS contexts are correctly created and are consistent with the underlying naming service data. After the FNS contexts have been set up, this correspondence needs to be maintained as users, hosts, printers, and so forth are added to and removed from the system. The following sections describe how to maintain FNS and name service consistency.

FNS and Solstice AdminSuite

If you have the Solstice AdminSuite product, you can use it to add, change, or delete user and host information in the underlying name service. This is a recommended method because the AdminSuite tools update the corresponding FNS namespace automatically.

Checking Naming Inconsistencies

When updates to FNS or the primary name service are made independent of the Solstice AdminSuite product, the resulting inconsistencies are resolved by the use of the FNS tool, fncheck. The fncheck command checks for inconsistencies between the FNS hostname and user contexts, and:

NIS+. The NIS+ hosts.org_dir and passwd.org_dir system tables.
NIS. The NIS hosts.byname and passwd.byname maps.
Files. The etc/hosts and etc/passwd files.

The fncheck command lists those host and user names that are in the FNS namespace but not in the name service data, and those host and user names that are in the name service data but not in the FNS namespace.

The command syntax is:

fncheck [-r][-s][-u][-t hostname|username][domain_name]

Table 22-1 fncheck Command Options


Option	Description
`domain`	Apply the command to an NIS+ domain other than the one in which you are running the command.
`-t`	Specifies the type of context to check. Allowed types are `hostname` or `username`.
`-s`	Lists host or user names from the namespace dataset that are not in the FNS namespace
`-r`	Lists host or user names from the FNS namespace that do not have entries in the corresponding namespace dataset
`-u`	Updates the FNS namespace based on information in the relevant namespace dataset

The -t option is used to specify the contexts to check (host or user). If you omit the -t option, both the hostname and username contexts are checked.

When the -r option is used with the -u option, items that appear only in the FNS context are removed from the FNS context. When the -s option is used with the -u option, items that appear only in the namespace dataset are added to the FNS context. If neither -r or -s are specified, items are added and removed from the FNS context to make it consistent with the corresponding namespace data.