Tips to Setup NIS Server with OpenBSD

Master server setup

* Enable RPC

/etc/rc.conf:
portmap=YES

* Enable the NFS server

/etc/rc.conf:
nfs_server=YES
lockd=YES
nfs_flags=”-tun 4″ # 4 simultaneous clients. Crank if needed

/etc/exports:
# change to match your lan addresses and requirements
/home -maproot=0 -network 172.21.0.0 -mask 255.255.0.0

* Enable NIS master server

root # echo “mynisdomain” > /etc/defaultdomain

(Change ‘mynisdomain’ to something suitable)

root # ypinit -m

/etc/rc.conf:
ypserv_flags=
yppasswdd_flags= # Allows password changes from remote machines

* Start the daemons

root # portmap
root # nfsd -tun 4
root # mountd
root # rpc.lockd
root # ypserv
root # ypbind
root # rpc.yppasswdd

These will all be restarted on reboot.

* Create user accounts and populate /home

Install favourite shells (for example zsh, bash). Update /etc/shells, /etc/usermgmt.conf and /etc/skel with preferences and defaults, for example, supply a default password and provide shell startup scripts.

root # useradd -m newuser
…

Add new users to supplementary groups in /etc/group, wheel for example.

* Create an automounter map for client machines

Edit /etc/amd/amd.home to contain these 2 lines:

/defaults type:=nfs;sublink:=${key};opts:=rw,soft,intr,vers=2,proto=udp
* rhost:=mymasterhost;rfs:=/home

Change mymasterhost to hostname of master server. Can also have special per-user settings if needed.

[Note vers=2 is the only option I could get locking over NFS working with a FreeBSD NFS client. OpenBSD's amd complains that these are old style options. What should I be using that's portable?]

* Update the master NIS maps with new changes

root # cd /var/yp; make

Source : www.openbsdsupport.org