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How Data ONTAP name service switch configuration works

Data ONTAP stores name service configuration information in a table that is the equivalent of the /etc/nsswitch.conf file on UNIX systems. You must understand the function of the table and how Data ONTAP uses it so you can configure it appropriately for your environment.

The Data ONTAP name service switch table determines which name service sources Data ONTAP consults in which order to retrieve information for a certain type of name service information. Data ONTAP maintains a separate name service switch table for each Storage Virtual Machine (SVM).

Database types

The table stores a separate name service list for each of the following database types:

Database type Defines name service sources for... Valid sources are...
hosts Converting host names to IP addresses files, dns
group Looking up user group information files, nis, ldap
passwd Looking up user information files, nis, ldap
netgroup Looking up netgroup information files, nis, ldap
namemap Mapping user names files, ldap

Source types

The sources specify which name service source to use to retrieve the appropriate information.

Specify source type... To look up information in... Managed by the command families...
files Local source files vserver services name-service unix-user

vserver services name-service unix-group

vserver services name-service netgroup

vserver services name-service dns hosts

nis External NIS servers as specified in the NIS domain configuration of the SVM vserver services name-service nis-domain
ldap External LDAP servers as specified in the LDAP client configuration of the SVM vserver services name-service ldap
dns External DNS servers as specified in the DNS configuration of the SVM vserver services name-service dns

Even if you plan to use NIS or LDAP for both data access and SVM administration authentication, you should still include files and configure local users as a fallback in case NIS or LDAP authentication fails.