Network Information Service (NIS) B.11.31.04 Administrator's Guide

# /usr/bin/ypwhich

b. Log in to the NIS master server, and run the following command:

# cd /var/yp/domainname

c. Run the following command on the NIS master server to write the contents of

the ypservers database to a temporary file:

# /usr/sbin/makedbm -u ypservers > tempfile

d. If the NIS slave server is not listed in tempfile, use a text editor to add it, and

then run the following command to rebuild the ypservers database:

# /usr/sbin/makedbm tempfile ypservers

e. Log in to the NIS slave server and run the following command:

# /usr/sbin/ypxfr ypservers

Unknown Host

If the message “Unknown Host” is displayed, complete the following steps:

1. Run the following command to trace a lookup of the unknown host:

# /usr/contrib/bin/nsquery hosts hostname

The trace will indicate the name services (BIND, NIS, or /etc/hosts) that were

queried and in what order. If the host is not performing lookups as desired, see

“NFS Services Administrator’s Guide”, for instructions on configuring the Name

Service Switch.

2. Run the following command on the NIS client to determine which master server

provides the hosts map:

# /usr/bin/ypwhich -m hosts

If the server does not respond, see “The NIS Server does not Respond” (page 59).

If the ypwhich command returns the name of the NIS master server, log in as root

to the master server and ensure that the unknown host is listed in its /etc/hosts

file. Then, run the following commands on the master server to generate the NIS

hosts database from the /etc/hosts file and replicate it to the NIS slave servers:

# touch /etc/hosts

# cd /var/yp

# /usr/ccs/bin/make hosts

3. Run the following command to check whether the unknown host is listed in the

hosts database on the NIS server to which the client is bound:

# /usr/bin/ypmatch hostname hosts

If the host is not listed in the hosts database, run the following commands on the

NIS server to which the client is bound:

# /usr/sbin/ypxfr hosts.byname

# /usr/sbin/ypxfr hosts.byaddr

Unknown Host 61