[SUMMARY] Changing hostname of NIS master
2007-12-25 9:40:00
Platform: Sun Ultra 450, Solaris 2.6 fully patched
I'm going to stick with my original plan which follows. Here are some
of the suggestions I received:
1) You can use ftp with .netrc file to populate the ypservers files to clients
2) Set up an alias in /etc/hosts or netgroups for the new master hostname
and propogate that. Then redo the NIS servers and master maps. Then
rename the NIS master.
This might have worked, except that we are going to be
swapping two hostnames (forgot to mention that in the
original post).
3) It may be easier to simply revise the NIS slaves /etc/hosts
file, and then rerun ypinit to re-establish it's slave status.
I don't think this would work, the maps on the master need to be
re-created since they contain the hostname. The slave servers
would have one hostname and the master would have another.
4) Backup NIS files/maps, use 'sys-unconfig', reconfigure server, recreate
NIS master.
This was much more work than I want to do! I've also heard that
using sys-unconfig on an NIS server can have bad consequences!
5) I was reminded to be sure to have a slave server going during this
change, so NIS service is not interrupted.
Here's my basic plan:
1. Rebuild the maps on the NIS master (after hostname change) but don't distribute
cd /var/yp
rm *.time
make NOPUSH=1
2. Rebuild the ypservers map on the NIS master
cd /var/yp
ypcat -k ypservers > /tmp/tmpfile
<edit /tmp/tmpfile, change hostname>
makedbm - /var/yp/`domainname`/ypservers < /tmp/tmpfile
2. Use ypxfr to transfer the new maps from the master to slaves
(can't use yppush cause the slaves would try to get the maps from the old
hostname)
3. Edit the /var/yp/binding/`domainname`/ypservers file on each client/slave
to reflect the master's new hostname
Thanks to:
Satish B Movva
Matthew Stier
David Evans
Marco Greene
Steve Perez
James Robertori
Brian Parent
Original Question:
>
> Question: How to change hostname on NIS master server
>
> Platform: Sun Ultra 450, Solaris 2.6 fully patched
>
>
> I need to change the hostname of our NIS master. I have gone through
> the archives and FAQ, and have the basics as far as the hostname change:
>
> Modify:
> /etc/hostname.[network-interface] (i.e. le0)
> /etc/inet/hosts
> /etc/nodename
> /etc/net/ticlts/hosts
> /etc/net/ticots/hosts
> /etc/net/ticotsord/hosts
> /etc/X0.hosts (?)
> /etc/bootparams (?)
> /etc/mail/sendmail.cf
>
> I've gone thru the Sun NIS docs, the O'Reilly "Managing NFS and NIS" book, and
> this list's archives, and haven't come up with anything on changing the hostname
> for an NIS master.
>
> Here is a tentative plan for making NIS happy after the hostname change:
>
> 1. Rebuild the maps on the NIS master (after hostname change) but don't distribute
> cd /var/yp
> rm *.time
> make NOPUSH=1
>
> 2. Rebuild the ypservers map on the NIS master
> cd /var/yp
> ypcat -k ypservers > /tmp/tmpfile
> <edit /tmp/tmpfile, change hostname>
> makedbm - /var/yp/`domainname`/ypservers < /tmp/tmpfile
>
> 2. Use ypxfr to transfer the new maps from the master to slaves
> (can't use yppush cause the slaves would try to get the maps from the old
> hostname)
> 3. Edit the /var/yp/binding/`domainname`/ypservers file on each client/slave
> to reflect the master's new hostname
>
> Am I missing anything? Thanks for your help!
>
> Summary to follow.
>
> Dave Foster
>
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> David Foster National Center for Microscopy and Imaging Research
> Programmer/Analyst University of California, San Diego
> dfoster@ucsd.edu Department of Neuroscience
> (858) 534-7968 http://www-ncmir.ucsd.edu/
> [All opinions expressed are mine -- duh]
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
David Foster National Center for Microscopy and Imaging Research
Programmer/Analyst University of California, San Diego
dfoster@ucsd.edu Department of Neuroscience
(858) 534-7968 http://www-ncmir.ucsd.edu/
[All opinions expressed are mine -- duh]
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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