Linux networking....

[littlebird]

Hello!
I need help with linux.
You see we have a Dell Linux Server with RH7.2 and we have 16 workstations using RH7.3 and 7.2. Every workstation has their own IP and is connecting to the server via NIS (ypbind) to mount the users home directories and all that stuff.
The thing is that the first week of use everything was great. Everything was working and every user could log in!
But now only 3 computers are working!!

The thing is that the other 13 machines are not binding to the server! The stay at :

Listening for NIS .................................................. ........... [FAILED]

Now... why the heck is this happening?
Nothing was changed in the computer config files. Everything is the same. And the weird thing is that the server is configured correctly too (nothing has changed) so if it is the server nothing would be working but 3 computers are completing successfully the ypbind!!!

Can anyone help me.?
Any info I'll provide..!

[vass0922]

can you see any reason for it in /var/log/messages on either the server or the failing clients?

[littlebird]

in /var/log/messages for the machine it says:

Oct 29 17:09:47 m117-16 ypbind: ypbind startup succeeded
Oct 29 17:10:08 m117-16 ypbind: ypbind shutdown succeeded
Oct 29 17:10:08 m117-16 ypbind: attempting to contact yp server failed
Oct 29 17:15:17 m117-16 ypbind: ypbind startup succeeded
Oct 29 17:15:39 m117-16 ypbind: ypbind shutdown succeeded
Oct 29 17:15:39 m117-16 ypbind: attempting to contact yp server failed
Oct 29 17:22:37 m117-16 portmap: portmap shutdown succeeded
Oct 29 17:22:37 m117-16 portmap: portmap startup succeeded
Oct 29 17:22:37 m117-16 ypbind: ypbind startup succeeded
Oct 29 17:22:59 m117-16 ypbind: ypbind shutdown succeeded
Oct 29 17:22:59 m117-16 ypbind: attempting to contact yp server failed

whenever you try to start the ypbind daemon.!

Let me check the server.

[littlebird]

Server side:

Oct 29 16:47:25 pegasus ypserv[26569]: refused connect from 136.145.......:1234 to procedure ypproc_domain_nonack
Oct 29 16:47:45 pegasus ypserv[26569]: refused connect from 136.145.......:1238 to procedure ypproc_domain_nonack
Oct 29 16:48:05 pegasus ypserv[26569]: refused connect from 136.145........:1239 to procedure ypproc_domain_nonack
Oct 29 16:48:45 pegasus last message repeated 2 times
Oct 29 16:50:05 pegasus last message repeated 4 times
Oct 29 16:51:06 pegasus last message repeated 3 times
Oct 29 16:52:26 pegasus last message repeated 4 times
Oct 29 16:53:46 pegasus last message repeated 4 times
Oct 29 16:55:06 pegasus last message repeated 4 times
Oct 29 16:56:26 pegasus last message repeated 4 times
Oct 29 16:57:46 pegasus last message repeated 4 times
Oct 29 16:59:06 pegasus last message repeated 4 times
Oct 29 17:00:26 pegasus last message repeated 4 times
Oct 29 17:01:46 pegasus last message repeated 4 times
Oct 29 17:02:06 pegasus ypserv[26569]: refused connect from 136.145.......:1239 to procedure ypproc_domain_nonack
Oct 29 17:02:26 pegasus ypserv[26569]: refused connect from 136.145........:1240 to procedure ypproc_domain_nonack
Oct 29 17:02:46 pegasus ypserv[26569]: refused connect from 136.145.........:1244 to procedure ypproc_domain_nonack
Oct 29 17:03:06 pegasus ypserv[26569]: refused connect from 136.145.........:1247 to procedure ypproc_domain_nonack
Oct 29 17:03:46 pegasus last message repeated 2 times
Oct 29 17:05:06 pegasus last message repeated 4 times
Oct 29 17:05:26 pegasus ypserv[26569]: refused connect from 136.145..........:1248 to procedure ypproc_domain_nonack
Oct 29 17:05:46 pegasus ypserv[26569]: refused connect from 136.145.........:1251 to procedure ypproc_domain_nonack
Oct 29 17:06:26 pegasus last message repeated 2 times
Oct 29 17:07:46 pegasus last message repeated 4 times
Oct 29 17:09:06 pegasus last message repeated 4 times
Oct 29 17:10:06 pegasus last message repeated 3 times
Oct 29 17:10:26 pegasus ypserv[26569]: refused connect from 136.145.........:1252 to procedure ypproc_domain_nonack

[pbharris]

hello,
as embarrassed as i am to say this i have never run NIS... but i have been thinking this would be nice because we are an all linux home now


the first thing i would see if ypbind is running properly on the server, i assume a restart of a client would not fix the issue...

[eagle1]

Already tried a restart!
Also checked if the config files (yp.conf in the clients) were correctly written and they are.!
The last thing we did (yesterday) was to upgrade the ypbind server version (and clients) but ... that didn't do anything either.!!

We don't want to start over from scratch as that would take a lot of work (backing the server, the users home directories, etc. etc.).
That's a last resort. But we can't find anything!!!

BTW, I'm littlebirds brother.

[dunbar]

Quote:

Originally posted by littlebird
in /var/log/messages for the machine it says:

Oct 29 17:09:47 m117-16 ypbind: ypbind startup succeeded
Oct 29 17:10:08 m117-16 ypbind: ypbind shutdown succeeded
Oct 29 17:10:08 m117-16 ypbind: attempting to contact yp server failed
Let me check the server.

g-g-g-g-z-z-z-k!
I'm totally non network oriented, but it looks like the client makes attempts to contact the server after the server is successfully shutdown.... as if something is out of step somewhere. Maybe this is the way things are supposed to work, maybe not?
I now return you to your regularyly scheduled thread.... brrrrzzzzzzaappp!

[eagle1]

The message you quoted is the ypbind script OF one of the CLIENTS and not the server!
That happenned whenever I tried to bind the client to the server to start NIS.!

[rajender120]

Quote:

Originally Posted by littlebird

Hello!
I need help with linux.
You see we have a Dell Linux Server with RH7.2 and we have 16 workstations using RH7.3 and 7.2. Every workstation has their own IP and is connecting to the server via NIS (ypbind) to mount the users home directories and all that stuff.
The thing is that the first week of use everything was great. Everything was working and every user could log in!
But now only 3 computers are working!!

The thing is that the other 13 machines are not binding to the server! The stay at :

Listening for NIS .................................................. ........... [FAILED]

Now... why the heck is this happening?
Nothing was changed in the computer config files. Everything is the same. And the weird thing is that the server is configured correctly too (nothing has changed) so if it is the server nothing would be working but 3 computers are completing successfully the ypbind!!!

Can anyone help me.?
Any info I'll provide..!

Hi

Please check the /var/yp/securenets. It does happen when the machines are in the different domain and there is different entry in securenets file.