How to Integrate CentOS 7 with Windows AD - Realmd

Realmd widely used to discover and joining objects into windows domain controller. CentOS7 machines can be integrated with AD (Active Directory) for centralized authentications and users/groups level access can be managed through centralized AD controller.

This article describes How to Integrate CentOS7 with Windows AD - Realmd

 

Step 1. Package Installation: Run the following command to install realmd related packages:

 

[root@linuxcnf ~]# yum install sssd realmd oddjob oddjob-mkhomedir adcli samba-common-tools krb5-workstation Loaded plugins: fastestmirror ………………………… Installed:   adcli.x86_64 0:0.8.1-16.el7_9.1       krb5-workstation.x86_64 0:1.15.1-50.el7          oddjob.x86_64 0:0.31.5-4.el7        oddjob-mkhomedir.x86_64 0:0.31.5-4.el7   realmd.x86_64 0:0.16.1-12.el7_9.1     samba-common-tools.x86_64 0:4.10.16-15.el7_9     sssd.x86_64 0:1.16.5-10.el7_9.8   Dependency Installed:   avahi-libs.x86_64 0:0.6.31-20.el7                       c-ares.x86_64 0:1.10.0-3.el7                          ………………………..   Complete! [root@linuxcnf ~]#

 

Step 2. Configure DNS: Run the following command and add DNS in resolv.conf file:

 

[root@linuxcnf ~]# vi /etc/resolv.conf # Generated by NetworkManager search dc-node1.linuxcnf.com nameserver 192.168.1.103 …………………….. [root@linuxcnf ~]#

 

Step 3. AD Integration: Before running the below command create an object on AD for the client machine and run the below command on client machine to integrate the machine with AD:

 

[root@linuxcnf ~]# realm –user=ad-user dc-node1.linuxcnf.com Password for ad-user: [root@linuxcnf ~]#

 

Step 4. Validate AD Integration: Run the following command to verify the AD integration:

 

[root@linuxcnf ~]# id ad-user@dc-node1.linuxcnf.com uid=2004934419(ad-user@dc-node1.linuxcnf.com) gid=2004930801(domain users@dc-node1.linuxcnf.com) groups=2004930801(domain users@dc-node1.linuxcnf.com) ……………………. [root@linuxcnf ~]#

 

Done!!! CentOS7 machine is integrated with windows active directory.