yum search sssd

yum install sssd.x86_64

Dependencies:

 sssd-krb5    x86_64   1.12.2-58.el7_1.18      updates     117 k
 sssd-krb5-common   x86_64   1.12.2-58.el7_1.18       updates     175 k

Now look for krb5 and use for next search

yum search krb5 | grep workstation

yum install krb5-workstation.x86_64

yum search gtk | grep auth

yum install authconfig-gtk.x86_64