Bug 475749 - ypwhich -m and ypwhich -m passwd show wrong nis server
ypwhich -m and ypwhich -m passwd show wrong nis server
Product: Red Hat Enterprise Linux 5
Classification: Red Hat
Component: yp-tools (Show other bugs)
All Linux
low Severity medium
: rc
: ---
Assigned To: Vitezslav Crhonek
Depends On:
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Reported: 2008-12-10 04:39 EST by Lutz Lange
Modified: 2009-09-23 09:05 EDT (History)
0 users

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Doc Type: Bug Fix
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Last Closed: 2009-09-23 09:05:58 EDT
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Description Lutz Lange 2008-12-10 04:39:13 EST
Description of problem:
I have configured my system as a nis client for server1.example.com. 
# ypwhich 

[root@station1 ~]# ypwhich -m
rpc.byname localhost
protocols.byname localhost
services.byname localhost
services.byservicename localhost
netid.byname localhost
passwd.byuid localhost
group.bygid localhost
passwd.byname localhost
rpc.bynumber localhost
group.byname localhost
mail.aliases localhost
protocols.bynumber localhost
hosts.byaddr localhost
hosts.byname localhost

There should be the server1.example.com listed as second field here.
Same for :
# ypwhich -m passwd

Expected result:

Version-Release number of selected component (if applicable):

How reproducible:
bind to NIS domain, call ypwhich -m or ypwhich -m passwd
Comment 1 Vitezslav Crhonek 2008-12-10 05:14:28 EST
Hm, works for me flawlessly.

Please let me see your /etc/yp.conf, /etc/sysconfig/network and output of "domainname" command.

I'm able to get different answer from "ypwhich" and "ypwhich -m" only when NIS server and client is on the same machine and client is configured with "domain X server localhost" in /etc/yp.conf. If configured with "domain X server base-os-05", then "ypwhich" and "ypwhich -m" are same.

[root@base-os-05 yp]# ypwhich 
[root@base-os-05 yp]# ypwhich -m
rpc.byname base-os-05.englab.brq.redhat.com
netid.byname base-os-05.englab.brq.redhat.com
services.byservicename base-os-05.englab.brq.redhat.com
protocols.byname base-os-05.englab.brq.redhat.com
passwd.byname base-os-05.englab.brq.redhat.com
passwd.byuid base-os-05.englab.brq.redhat.com
mail.aliases base-os-05.englab.brq.redhat.com
ypservers base-os-05.englab.brq.redhat.com
rpc.bynumber base-os-05.englab.brq.redhat.com
hosts.byname base-os-05.englab.brq.redhat.com
group.byname base-os-05.englab.brq.redhat.com
group.bygid base-os-05.englab.brq.redhat.com
services.byname base-os-05.englab.brq.redhat.com
hosts.byaddr base-os-05.englab.brq.redhat.com
protocols.bynumber base-os-05.englab.brq.redhat.com

But that's not a bug of course.
Comment 2 Lutz Lange 2008-12-10 05:51:40 EST
[root@station1 ~]# egrep -v '^(#|$)' /etc/yp.conf
domain notexample server

[root@station1 ~]# domainname

[root@station1 ~]# cat /etc/sysconfig/network

Hope that helps
Comment 3 Vitezslav Crhonek 2008-12-10 06:23:02 EST
I suppose that is server1.example.com, which is different from station1.example.com. I see nothing wrong in these files.

If you ypcat some map, is the result correct (I mean proper map from server1.example.com, e.g. passwd.byname)? In other words, is NIS working fine, only ypwhich shows bad server?
Comment 4 Lutz Lange 2008-12-10 06:26:36 EST
Yes server1.example.com is
And i do have the correct map data available. It's just the wrong server that is shown with ypwhich -m ...f
Comment 5 Vitezslav Crhonek 2009-09-23 07:52:56 EDT
I didn't notice this behaviour during that time and I'm not able to reproduce it consciously.

I configure NIS this way habitually:
1. add NISDOMAIN to /etc/sysconfig/network on the server
2. set domainname
3. run ypserv service on the server
4. run /usr/lib(64)/yp/ypinit -m on the server
5. config /etc/yp.conf (domain NISDOMAIN server SERVER) on the client
6. run ypbind service on the client
7. test ypwhich, ypwhich -m, ... on the client

I didn't see any differnce between ypwhich and ypwhich -m. Do you have some certain advance how to reproduce it?
Comment 6 Lutz Lange 2009-09-23 09:05:58 EDT
Im unable to reproduce this today. But we have changed our configuration a bit. We now employ a ypservers file on server1 - which was missing previously.
[root@server1 ~]# cat /var/yp/ypservers

This my be the reason, that thinks work correctly now.

[root@station12 ~]# ypwhich -m
protocols.bynumber server1.example.com
services.byname server1.example.com
services.byservicename server1.example.com
passwd.byname server1.example.com
rpc.bynumber server1.example.com
passwd.byuid server1.example.com
protocols.byname server1.example.com
hosts.byname server1.example.com
rpc.byname server1.example.com
mail.aliases server1.example.com
group.byname server1.example.com
netid.byname server1.example.com
group.bygid server1.example.com
hosts.byaddr server1.example.com

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