Date: Thu, 15 Oct 1998 15:59:06 -0700 (PDT) From: Jin Guojun (FTG staff) <jin@george.lbl.gov> To: freebsd-bugs@hub.freebsd.org, wpaul@FreeBSD.ORG, wpaul@hub.freebsd.org Subject: Re: bin/8338 Message-ID: <199810152259.PAA22852@george.lbl.gov>
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> You can look at the contents of the map on the slave using the yp_mkdb
> command. Do the following:
>
> # cd /var/yp/<your domain>
> # yp_mkdb -u passwd.byname | grep YP_MASTER_NAME
The YP_MASTER_NAME is correctly set.
> You will see that there is a special record in the map database with a
> key of YP_MASTER_NAME and a data field with the name of the master host.
> This is the information that ypserv uses to determine the master name
> when it receives a YPPROC_XFR request. It deliberately ignores the hostname
> specified in the request arguments because it knows that it might be wrong,
> and the information in the map is always supposed to be correct.
>
> When you first initialize a slave, you need to use ypxfr to transfer copies
> manually onto the slave from the master. If you have FreeBSD 3.0, then
> the ypinit script will do this for you: use ypinit -s. After you do this,
> then the FreeBSD slave server will contain the correct YP_MASTER_NAME
> information.
Yes, under 3.0, the "ypinit -s $YP_MASTER_NAME" removed /var/yp/${domain}
and reuested all copies of maps transfered; and then, everything seems to work.
Under 2.x system, however, "ypxfr -h $YP_MASTER_NAME passwd" failed:
# ./ypxfr -h $YP_MASTER_NAME passwd
ypxfr: failed to find master of passwd in domain FTG: No such map in server's domain
ypxfr: Exiting: Could not get master server address
I don't know if I still miss something here, but it is not important since
3.0 works and we wil move to 3.0 any way. If this can be resolved, it will be
appreciated.
> There are several reasons why may be having problems:
>
> - You previously set up the FreeBSD host as an NIS master server and
> did not erase the old maps before turning the machine into a slave.
There was no set-up for server, but could be some bad maps there.
Clean-up doesn't help.
> - The maps on the NIS master server have the wrong YP_MASTER_NAME
> in them. To check, do a yppoll passwd.byname from a client that is
> bound to the master name. If yppoll reports the wrong information,
> then you should rebuild the maps on the master server.
yppoll passwd.byname reports correct information on all hosts.
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