This is the method I use to Join my Centos 6.7/8 VDI templates. After this is done, you don’t have to do anything to the provisioned VMs. With Horizon View 7, it’s much easier to create and add Linux boxes to a pool.
Install the following packages.
yum -y install openldap openldap-clients nss_ldap authconfig nss-pam-ldapd.x86_64 pam_krb5.x86_64
Run the command as root or sudo.
The authentication configuration windows will open and input the highlighted fields.
**The openldap certificate, I import it from the openldap server, and put it in a location on the local machine where I can have easy access to it**
Switch to advanced options and check the create home directories on the first login and click apply.
For some reason, every time I join a Centos box to the domain this way, it does not work so I have to add the following line tls_reqcert allow to /etc/openldap/ldap.conf and /etc/nslcd.conf and then it works.
Finally, the test!
Reload nslcd service – # service nslcd restart
Run the command – # getent passwd domainuser <– this user is a AD user
And UI login test.