Mudanças entre as edições de "Minicluster:NIS"

Edição das 11h30min de 9 de julho de 2010

É necessário informar um nome de domínio NIS (que pode ser diferente do domínio DNS matrix). Foi informado nismatrix

Servidor NIS

• Setar o serviço time para rodar via inetd/xinetd, ou configure xntpd, ou de outro modo certifique-se que o relógio do host esteja sincronizado.

• Instale o servidor NIS

[one]# yum install yp-tools
[one]# yum install ypbind
[one]# yum install ypserv
[one]# yum install rpcbind       # antigamente portmap 

• Edite /etc/yp.conf:

domain internal server ip.of.nis.server
domain nismatrix server 192.168.0.99

• Edite /etc/ypserv.conf:

..
dns: no
files: 30
xfr_check_port: yes
* : * : shadow.byname : port
* : * : passwd.adjunct.byname : port 

• Edite /etc/sysconfig/network:

NISDOMAIN="nismatrix"

• Setar o nome do domínio NIS:

[one]# domainname   nismatrix
[one]# ypdomainname nismatrix

• Crie o arquivo /var/yp/securenets:

host 127.0.0.1
255.255.255.0   192.168.0.0

• Certifique-se que o serviço rpcbind está rodando

[one]# service   rpcbind start
[one]# chkconfig rpcbind on

• • Portmap will need a rule in /etc/hosts.allow to allow access from localhost and any hosts that need to access NIS.

• Editar linhas em

[one]$ vi /var/yp/Makefile
..
ALIASES     = $(YPSRCDIR)/aliases  # aliases could be in /etc or /etc/mail
#ALIASES    = /etc/mail/aliases

• Inicie o serviço ypserv:

[one]# service ypserv start

• Verifique se está escutando

[one]# rpcinfo -u localhost ypserv
program 100004 version 1 ready and waiting
program 100004 version 2 ready and waiting

• Inicialize o mapeamento NIS (especifique one.matrix, Ctrl-D, y, e deixe finalizar):

[one]$ /usr/lib64/yp/ypinit -m

• Inicie ypbind, yppasswdd, ypxfrd:

[one]# service ypbind start
[one]# service yppasswdd start
[one]# service ypxfrd start

• Configure os serviços YP para iniciar no boot:

[one]# chkconfig ypserv on
[one]# chkconfig ypbind on
[one]# chkconfig yppasswdd on
[one]# chkconfig ypxfrd on

Cliente NIS

[root@cell100]$ chkconfig --level 345 ypbind on
nisdomainname nismatrix                                        
[root@cell100] ~ # nisdomainname

NIS client host setup

Required packages: yp-tools ypbind portmap

Edit /etc/sysconfig/network:

NISDOMAIN=internal

Edit /etc/yp.conf:

domain internal server ip.of.master.server

Edit /etc/hosts:

ip.of.master.server    hostname.domain hostname

Set NIS domain-name:

client# domainname internal
client# ypdomainname internal

Edit /etc/nsswitch.conf:

passwd:     files nis
shadow:     files nis
group:      files nis

Make sure the portmap service is running:

client# service portmap start
client# chkconfig portmap on

The /etc/hosts.allow file will need rules allowing access from localhost and the NIS master server.

Start ypbind service:

client# service ypbind start
client# chkconfig ypbind on

Test it out:

client# rpcinfo -u localhost ypbind
client# ypcat passwd

Gerenciando usuários

• adicionar usuário: (como root no servidor NIS)

useradd -g grupo usuario

ou criando diretório home

useradd -m -g grupo usuario

Para funcionar foi preciso a opção -p password (que cria senha padrão)

useradd -m -p password -g grupo usuario

• • Atualizar o banco de dados NIS

make -C /var/yp

• Trocando a senha para o usuário

yppasswd -p usuario

User password management: Users will now change their passwords using the NIS password command yppasswd instead of the local password file affected command, passwd. When using an NIS slave (described below), then do not modify the password while logged into the NIS master.

Referências

• http://bradthemad.org/tech/notes/redhat_nis_setup.php, walkthrough completo
• http://under-linux.org/wiki/Tutoriais/LDAP/LDAP-NIS-NFS
• http://www.wellho.net/solutions/general-what-are-nis-ldap-dns-and-bind.html
• http://bradthemad.org/tech/notes/redhat_nis_setup.php
• http://www.yolinux.com/TUTORIALS/NIS.html
• http://www.tldp.org/HOWTO/NIS-HOWTO/ypserv.html