getent passwd does not return AD users Centos 7 SSSD

I'm used to joining windows 2008 r2 AD with Krb5.conf/ldap.conf/smb.conf and pam.d/authconfig_ac and being able to list users with

getent passwd

but after joining a centos 7 system I can logon fine, but I can't see users in AD who are able to logon. What do I need to look at to fix this? I'm just getting my feet wet on Centos 7 and used the join realm to join the domain.