You must disable SELinux and configure networking before installing Linux PAM Client.
To disable SELinux, perform the following steps:
Open the configuration file sudo nano /etc/selinux/config.
Change SELINUX=enforcing to SELINUX=disabled.
Save the changes in the file.
Reboot your system.
To configure networking, perform the following steps:
Ensure that DNS is properly configured for server discovery.
Set Search Domains to FQDN.
For example, in CentOS 7, you can set /etc/sysconfig/network-scripts/ifcfg-eth0
by adding DOMAIN=mycompany.com.