In CentOS 6, they replaced nss_ldap because the PADL nss stuff has memory leaks.
I've read the new and preferred way is with SSSD. http://docs.fedoraproject.org/en-US/Fedora/15/html/Deployment_Guide/chap...
Can you advise, connecting LDAP with SSSD, or is it not supported with Virtualmin? Can you update the guide, as nss_ldap is no longer supported?
And perhaps a question related to the topic, but are there pros/cons of using LDAP vs Users/Group clustering in Webmin, for manging authenticating users on more than one server? (basically, will the cluster feature be easier than trying to jump through hoops to get LDAP working?)