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This article mainly introduces how to configure NIS in Centos7, which has certain reference value. Interested friends can refer to it. I hope you will gain a lot after reading this article. Let Xiaobian take you to understand it together.

principle

NIS(Network Information Service)

In an environment where there are multiple linux servers, and there are many accounts on a linux server that may be the same, it will be difficult for administrators to manage. NIS's main function is to provide centralized management of system information such as host account systems.

When the NIS client needs to authenticate information about a user login, it sends a query request to the NIS server. When one NIS server in the system provides services for multiple NIS clients, any NIS client in the user login system will perform login authentication from the NIS server, thus realizing the function of centralized management of user accounts.

network environment preparation name ip address host name NIS server 13.10.29.2node292NIS client 13.10.29.3node293 preparation before installation

1. Stop firewall

systemctl stop firewalld

2. Disable firewall startup

systemctl disable firewalld.service

2. Modify selinux

vi /etc/selinux/config

Replace SELINUX=enforcing with SELINUX=disabled

, and execute setenforce 0 to make it take effect immediately, of course you can also restart the machine

NIS Server Operations

1. Install the software package

yum -y install ypserv ypbind yp-tools rpcbind

2. Set NIS network name

vi /etc/sysconfig/network

Add the line NISDOMAIN=nisdomain to specify that the NIS server domain name is nisdomain

3, Add boot automatically join NIS domain

vi /etc/rc.d/rc.local

Add the line/bin/nisdomainname nisdomain

Note ~~ At this time, you can use nisdomainname to view directly. If you find a domain name without display settings, enter nisdomainname nisdomain again.

4. Create domain users (groups)

useradd -s /bin/bash nisuser

And set the user password

passwd nisuser

create user groups

groupadd nisgroup

5. Set the main configuration file to add permissions

vi /etc/ypserv.conf

Add the following three lines to restrict servers that can only join the 13.10 segment

6. Add NIS client information to NIS domain server

vi /etc/hosts

Add the following two lines:

13.10.29.2 node292

13.10.29.3 node293

7. Start NIS service

systemctl start rpcbindsystemctl start yppasswddsystemctl start ypserv

8. Initialize the database

/usr/lib64/yp/ypinit -m

Then do "ctrl+D" and type y.

Note ~~ If there are changes to NIS server configuration files during this period, you need to reinitialize the database

9. Restart service after initializing database

systemctl start rpcbind systemctl start yppasswdd systemctl start ypserv

10. Set up the service to boot automatically

systemctl enable rpcbindsystemctl enable yppasswddsystemctl enable ypservNIS client operations

1. Install the software package

yum -y install ypbind yp-tools rpcbind

Add NIS domain to network

vi /etc/sysconfig/network

Add the line NISDOMAIN=nisdomain

3. Set up to automatically join NIS domain when booting

vi /etc/rc.d/rc.local

Add/bin/nisdomainname nisdomain

Also note that oh ~~ at this time you can use nisdomainname to view directly, if you find no domain name display settings, then enter nisdomainname nisdomain

Add NIS server information to NIS client

vi /etc/hosts

13.10.29.3 node293

13.10.29.2 node292

5. Use the graphical interface to configure NIS and enter directly:

authconfig-tui

6. Start-up service

systemctl start rpcbindsystemctl start ypbind

At this point, you can verify whether the deployment is successful. Enter yptest on the client. If you can see the users on the nis server, congratulations on the deployment.

The NIS environment above has been deployed!!

Thank you for reading this article carefully. I hope that the article "How to configure NIS in Centos7" shared by Xiaobian will be helpful to everyone. At the same time, I hope that everyone will support you a lot and pay attention to the industry information channel. More relevant knowledge is waiting for you to learn!

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