nis - unknown hostname

[steven Burgess_2]

Hi all

I have just added a couple of users to one of our nis domains

however, when I log into one of the servers I get the message

unknown

I can lookup and reverse lookup the host ok
The nis master can ping and resolve the host
the entry in /etc/rc.config.d/netconf for the host is ok
the client is configured in namesvrs file ok

I am using dns to resolv hostnames. Other servers in the environments are configured in the same way and do not have an issue

Any ideas

Steve

[A. Clay Stephenson]

You mentioned NIS but this appears to be DNS. A possible answer is that you failed to increase the serial value when you added the hosts so that dns did not remap the data. I would also check that your /etc/nsswitch.conf configuration is identical to that of known working hosts - that is most likely your problem.

[Uday_S_Ankolekar]

Does 'ypwitch' resolve NIS server on these new clients?

-USA..

[S.K. Chan]

A few q's just to clarify ..
a- The problem stays with just that couple of users or all users ?
b- The server showing this error, is it a client,slave or master ?
c- Is the user home directory local or NFS mounted. If NFS mounted are you using automounter ?
d- The nsswitch.conf and hosts file in /etc , have you check them ?

[Michael Steele_2]

Did you remake the /etc/hosts map?

ypmatch hostname hosts (* from master server *)

cd /var/yp
/usr/ccs/bin/make hosts (* to remake hosts map on master server *)
ypxfr hosts

To trace an unknown NIS host:

nsquery hosts hostname

To check your NIS master from the client:

ypwhich -m hosts

[steven Burgess_2]

Hi A.Clay

I had checked nsswitch.conf for variations, a working server is the same

hosts: files [NOTFOUND=continue UNAVAIL=continue TRYAGAIN=continue] dns [
NOTFOUND=return UNAVAIL=return TRYAGAIN=return]

I will check DNS

Steve

[Michael Steele_2]

Typo, should read:

To check if listed in hosts map?

ypmatch hostname hosts (* from master server *)

[steven Burgess_2]

Hi all

Thanks for the replies

I will have to go through your responses in the morning

We have a backup network for our servers.

ypwhich uses the hostname of the backup servers for the clients that don't have a problem

For the server that has an issue it uses the prod hostname

Would this cause an issue

For me it's

'Welcome to NIS , have a nice day - happy learning'

Thanks again

Steve

[V. Nyga]

Hi Steve,

maybe your problem is similar to mine:
http://forums.itrc.hp.com/cm/QuestionAnswer/1,,0x329719434a69d711abdc0090277a778c,00.html

If you have one master server you maybe need to rebuild the slave servers like S.K. Chan told me.

Welcome to NIS ;-))
Volkmar

[A. Clay Stephenson]

One other thought - examine your /etc/resolv.conf file asnd compare it to the working boxes; also do a netstat -r and compare to a working box - you just might be missing something as simple as a default route.

[steven Burgess_2]

Hi all

After checking the NIS environment, other id's I found a script fired from /etc/profile runs a user front end on particular hosts, i had to add the id's to an exclude list to prevent the running of the script as this particular host wasn't setup for the gui.

Thanks again

Steve