I've tried following this guide to set up realmd and sssd with active directory: http://funwithlinux.net/2014/04/join-ubuntu-14-04-to-active-directory-domain-using-realmd/

When I run the command realm –verbose join domain.company.com –user-principal=c-u14-dev1/[email protected] –unattended everything seems to connect. My sssd.conf looks like the following:

[nss]
filter_groups = root
filter_users = root
reconnection_retries = 3

[pam]
reconnection_retries = 3

[sssd]
domains = DOMAIN.COMPANY.COM
config_file_version = 2
services = nss, pam

[domain/DOMAIN.COMPANY.COM]
ad_domain = DOMAIN.COMPANY.COM
krb5_realm = DOMAIN.COMPANY.COM
realmd_tags = manages-system joined-with-adcli
cache_credentials = True
id_provider = ad
krb5_store_password_if_offline = True
default_shell = /bin/bash
ldap_id_mapping = True
use_fully_qualified_names = True
fallback_homedir = /home/%d/%u
access_provider = ad

My /etc/pam.d/common-auth looks like this:

auth    [success=3 default=ignore]      pam_krb5.so minimum_uid=1000
auth    [success=2 default=ignore]      pam_unix.so nullok_secure try_first_pass
auth    [success=1 default=ignore]      pam_sss.so use_first_pass
# here's the fallback if no module succeeds
auth    requisite                       pam_deny.so
# prime the stack with a positive return value if there isn't one already;
# this avoids us returning an error just because nothing sets a success code
# since the modules above will each just jump around
auth    required                        pam_permit.so
# and here are more per-package modules (the "Additional" block)
auth    optional                        pam_cap.so

However, when I try to SSH into the machine with my active directory user, I see the following in auth.log:

Aug 21 10:35:59 c-u14-dev1 sshd[11285]: Invalid user nwalke from myip
Aug 21 10:35:59 c-u14-dev1 sshd[11285]: input_userauth_request: invalid user nwalke [preauth]
Aug 21 10:36:10 c-u14-dev1 sshd[11285]: pam_krb5(sshd:auth): authentication failure; logname=nwalke uid=0 euid=0 tty=ssh ruser= rhost=myiphostname
Aug 21 10:36:10 c-u14-dev1 sshd[11285]: pam_unix(sshd:auth): check pass; user unknown
Aug 21 10:36:10 c-u14-dev1 sshd[11285]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=myiphostname
Aug 21 10:36:10 c-u14-dev1 sshd[11285]: pam_sss(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=myiphostname user=nwalke
Aug 21 10:36:10 c-u14-dev1 sshd[11285]: pam_sss(sshd:auth): received for user nwalke: 10 (User not known to the underlying authentication module)
Aug 21 10:36:12 c-u14-dev1 sshd[11285]: Failed password for invalid user nwalke from myip port 34455 ssh2

What do I need to do to allow active directory users the ability to log in?