topic Re: NIS Command/Script help. in Operating System - HP-UX

NIS Command/Script help.

joe_91 — Tue, 25 Jun 2002 18:22:46 GMT

Hi There:

I am installing a fileset on a hp-ux 11.0 box which would have to go and check the box on which it is installed and then pick out the master and the slave servers from that.(I have one master and 3 slaves) What would be the best way to accomplish this. ypwhich returns tha master name. But how would i extract the master and all the slave names out of a NIS box. Please Help.

Thanks
Joe.

Re: NIS Command/Script help.

A. Clay Stephenson — Tue, 25 Jun 2002 18:40:44 GMT

You are probably looking for ypcat -k ypservers.

Re: NIS Command/Script help.

S.K. Chan — Tue, 25 Jun 2002 18:42:52 GMT

On NIS client I don;t think you can do this but on an NIS slave or NIS master box, I use this method whenever I add additional NIS slaves to the domain. The same method can be used to find out the list of hostnames that were your NIS slaves and masters.
On NIS master or slave (assuming your NIS domain name is "engr")
# cd /var/yp/engr
# makedbm -u ypservers > /tmp/nis-list
Take a look at the file /tmp/nis-list, at the last line it should say ..
YP_MASTER_NAME
and all the other lines before that shows the list of master and slaves. Extract it accordingly.

Re: NIS Command/Script help.

S.K. Chan — Tue, 25 Jun 2002 18:45:04 GMT

Silly me .. yes ..
# ypcat -k ypservers
but I'm not sure how to distinguish which is the master server.

Re: NIS Command/Script help.

joe_91 — Tue, 25 Jun 2002 18:53:08 GMT

Hi :

Thanks Clay. But yes, how do i identify the master and the slave from that list. Please advise.

Thanks
Joe.

Re: NIS Command/Script help.

D. Jackson_1 — Tue, 25 Jun 2002 21:08:58 GMT

You could try to do it this way:
ypcat -k ypservers

donald
daffy
buggs

remsh donald "cat /etc/rc.config.d/namesrvs" |egrep "SLAVE|MASTER"

This will tell you which one is what.
slave = 1
master = 0

HTH

Re: NIS Command/Script help.

D. Jackson_1 — Tue, 25 Jun 2002 21:09:17 GMT

Re: NIS Command/Script help.

A. Clay Stephenson — Tue, 25 Jun 2002 21:44:30 GMT

You can use ypcat -k ypservers to identify the slave servers;

MASTER=$(ypwhich -m ypservers)
echo "Master NIS Server is ${MASTER}"

Re: NIS Command/Script help.

Niraj Kumar Verma — Wed, 26 Jun 2002 04:15:24 GMT

Hey try this

# rpcinfo -p |grep ypserv

if you get the ypserv running on the server that means the server is a NIS Master server.

you can have a small script to check this on the

# ypcat -k ypserves

result

-Niraj