NIS/ubuntu

root@slurm:~# cat /etc/os-release
PRETTY_NAME="Ubuntu 22.04.3 LTS"
 :
root@slurm:~#

root@slurm:~# apt update
root@slurm:~# apt install ypserv   (libnss-nis, nscd, rpcbind, ypbind-mt, yp-toolsが同時に入ります)

root@slurm:~# vi /etc/sysctl.conf
 :
kernel.domainname = sybyl
 :
root@slurm:~# reboot
 :
root@slurm:~# nisdomainname
sybyl
root@slurm:~#

root@slurm:~# echo "sybyl" > /etc/defalutdomain

root@slurm:~# touch /etc/auto.master /etc/auto.home

root@slurm:~# /usr/lib/yp/ypinit -m
 
At this point, we have to construct a list of the hosts which will run NIS
servers.  slurm is in the list of NIS server hosts.  Please continue to add
the names for the other hosts, one per line.  When you are done with the
list, type a <control D>.
        next host to add:  slurm
        next host to add:
The current list of NIS servers looks like this:
 
slurm
 
Is this correct?  [y/n: y]  y
We need a few minutes to build the databases...
Building /var/yp/sybyl/ypservers...
Running /var/yp/Makefile...
gmake[1]: Entering directory '/var/yp/sybyl'
Updating passwd.byname...
failed to send 'clear' to local ypserv: RPC: Program not registeredUpdating passwd.byuid...
failed to send 'clear' to local ypserv: RPC: Program not registeredUpdating group.byname...
failed to send 'clear' to local ypserv: RPC: Program not registeredUpdating group.bygid...
failed to send 'clear' to local ypserv: RPC: Program not registeredUpdating hosts.byname...
failed to send 'clear' to local ypserv: RPC: Program not registeredUpdating hosts.byaddr...
failed to send 'clear' to local ypserv: RPC: Program not registeredUpdating netgroup...
failed to send 'clear' to local ypserv: RPC: Program not registeredUpdating netgroup.byhost...
failed to send 'clear' to local ypserv: RPC: Program not registeredUpdating netgroup.byuser...
failed to send 'clear' to local ypserv: RPC: Program not registeredUpdating auto.master...
failed to send 'clear' to local ypserv: RPC: Program not registeredUpdating auto.home...
failed to send 'clear' to local ypserv: RPC: Program not registeredUpdating shadow.byname...
failed to send 'clear' to local ypserv: RPC: Program not registeredgmake[1]: Leaving directory '/var/yp/sybyl'
 
slurm has been set up as a NIS master server.
 
Now you can run ypinit -s slurm on all slave server.
root@slurm:~#

root@slurm:~# cat /lib/systemd/system/ypserv.service
[Unit]
Description=NIS/YP (Network Information Service) Server
Requires=rpcbind.service
After=network.target rpcbind.service
Before=ypbind.service
 
[Service]
Type=forking
PIDFile=/run/ypserv.pid
Environment=YPSERVARGS=
EnvironmentFile=-/etc/default/nis
ExecStartPre=/bin/domainname -F /etc/defaultdomain
ExecStart=/usr/sbin/ypserv $YPSERVARGS
 
[Install]
WantedBy=multi-user.target
root@slurm:~#

root@slurm:~# vi /lib/systemd/system/ypserv.service
 :
Environment=YPSERVARGS="-p 834"
 :
root@slurm:~# systemctl enable ypserv --now    <-- ypserv を起動します
 
root@slurm:~# 
root@slurm:~# lsof -i |grep ypserv
ypserv    26055            root    5u  IPv4 212744      0t0  UDP *:834
ypserv    26055            root    6u  IPv4 212753      0t0  TCP *:834 (LISTEN)
ypserv    26055            root    7u  IPv6 212762      0t0  UDP *:835
ypserv    26055            root    8u  IPv6 212767      0t0  TCP *:835 (LISTEN)
root@slurm:~#

root@slurm:~# cat /lib/systemd/system/yppasswdd.service
[Unit]
Description=NIS Users Passwords Change Server
Requires=rpcbind.service
Wants=network-online.target
After=network-online.target rpcbind.service
 
[Service]
Type=forking
PIDFile=/run/yppasswdd.pid
Environment=YPPASSWDDARGS= YPCHANGEOK=chsh YPPWDDIR=/etc
EnvironmentFile=-/etc/default/nis
ExecStartPre=/bin/domainname -F /etc/defaultdomain
ExecStart=/usr/sbin/rpc.yppasswdd -D $YPPWDDIR -e $YPCHANGEOK $YPPASSWDDARGS
 
[Install]
WantedBy=multi-user.target
 
root@slurm:~#

root@slurm:~# vi /lib/systemd/system/yppasswdd.service
 :
Environment=YPPASSWDDARGS="--port 836"  YPCHANGEOK=chsh YPPWDDIR=/etc
 :
root@slurm:~# systemctl enable yppasswdd --now
 
root@slurm:~# lsof -i | grep yppas
rpc.yppas 26203            root    5u  IPv4 213377      0t0  UDP *:836
rpc.yppas 26203            root    6u  IPv4 213382      0t0  TCP *:836 (LISTEN)
rpc.yppas 26203            root    7u  IPv6 213387      0t0  UDP *:837
rpc.yppas 26203            root    8u  IPv6 213392      0t0  TCP *:837 (LISTEN)
root@slurm:~#

root@ubuntu22:~# apt update
 
root@ubuntu22:~# apt install ypbind-mt    (同時にlibnss-nis nscd yp-toolsがインストールされる)

root@ubuntu22:~# cat /lib/systemd/system/ypbind.service
[Unit]
Description=NIS Binding Service
Requires=rpcbind.service
Wants=network-online.target
After=network-online.target rpcbind.service
Before=systemd-user-sessions.service
Before=nss-user-lookup.target
 
[Service]
Type=forking
PIDFile=/run/ypbind.pid
Environment=YPBINDARGS=
EnvironmentFile=-/etc/default/nis
ExecStartPre=/bin/domainname -F /etc/defaultdomain
ExecStart=/usr/sbin/ypbind $YPBINDARGS
 
[Install]
WantedBy=multi-user.target
root@ubuntu22:~#

root@ubuntu22:~# echo sybyl > /etc/defaultdomain
root@ubuntu22:~# echo "ypserver slurm" > /etc/yp.conf
 
root@ubuntu22:~# systemctl enable ypbind --now
 
root@ubuntu22:~# vi /etc/nsswitch.conf
 :
passwd:         files systemd nis
group:          files systemd nis
shadow:         files nis
automount:      nis
 :
root@ubuntu22:~#

root@ubuntu22:~# sed -i "s/IPAddressDeny=any/#IPAddressDeny=any/" /lib/systemd/system/systemd-logind.service
 
root@ubuntu22:~# systemctl daemon-reload
 
root@ubuntu22:~# systemctl restart systemd-logind.service

vi /etc/autofs.conf
  master_map_name = auto.home
  timeout = 300
  map_type = nis
vi /etc/nsswitch.conf
  automount: nis

(nis server)
root@slurm:~# lsof |grep sudo
root@slurm:~# groupmod -g 5000 sudo
 
root@slurm:~# cd /var/yp
root@slurm:/var/yp# make
 
 
(nis client)
root@ubuntu22:~# ypcat group
illya:x:1000:
sudo:x:5000:illya
nogroup:x:65534:
 
root@ubuntu22:~# cp /etc/group /etc/group.orig
root@ubuntu22:~#
root@ubuntu22:~# delgroup sudo
Removing group `sudo' ...
Done.
root@ubuntu22:~#