ubuntu Samba ad 인증

회사 서버는 LDAP로 로그인 인증을 하는데 LDAP 서버는 389-ds이고 다른 서버는 UBUNTU입니다. 이렇게 LDAP로 삼바를 인증하는 것은 문제가 있습니다. 어제 389 서버를 두 번이나 끊었습니다.
이제 Samba에서 AD로 인증이 변경되었습니다.

sudo apt-get install krb5-user winbind samba
#==========================================
sudo vi /etc/nsswitch.conf
passwd: files ldap winbind
group: files ldap winbind
shadow: files ldap winbind
#===========================================
sudo vi /etc/krb5.conf
[libdefaults]
        default_realm = HA.NET
                ticket_lifetime = 24000
                dns_lookup_realm = false
                dns_lookup_kdc = false
# The following krb5.conf variables are only for MIT Kerberos.
        krb4_config = /etc/krb.conf
        krb4_realms = /etc/krb.realms
        kdc_timesync = 1
        ccache_type = 4
        forwardable = true
        proxiable = true
        v4_instance_resolve = false
        v4_name_convert = {
                host = {
                        rcmd = host
                        ftp = ftp
                }
                plain = {
                        something = something-else
                }
        }
        fcc-mit-ticketflags = true
[realms]
        HA.NET = {
                kdc = 192.168.100.8:88
#                master_kdc = krb5auth1.HA.NET
#                admin_server = krb5-admin.HA.NET
                default_domain = HA.NET
        }
[domain_realm]
        .ha.net = HA.NET
        ha.net = HA.NET
[login]
        krb4_convert = true
        krb4_get_tickets = false
#==========================================================
sudo vi /etc/samba/smb.conf
[global]
   workgroup = HA
   server string = %h
   dns proxy = no
   log file = /var/log/samba/log.%m
   max log size = 1000
   syslog = 0
   panic action = /usr/share/samba/panic-action %d
   encrypt passwords = true
   security = ads
   realm = HA.NET
   password server = AD.HA.NET
   passdb backend = tdbsam
   obey pam restrictions = yes
   unix password sync = yes
# sending the correct chat script for the passwd program in Debian Sarge).
   passwd program = /usr/bin/passwd %u
   passwd chat = *Enter\snew\s*\spassword:* %n
 *Retype\snew\s*\spassword:* %n\
n *password\supdated\ssuccessfully* .
   pam password change = yes
# to anonymous connections
   map to guest = bad user
   usershare allow guests = yes
idmap uid = 16777216-33554431
idmap gid = 16777216-33554431
template shell = /sbin/nologin
template homedir = /home/%U
winbind use default domain = true
winbind offline logon = true
winbind enum groups = yes
winbind enum users = yes
winbind separator = /
[printers]
   comment = All Printers
   browseable = no
   path = /var/spool/samba
   printable = yes
   guest ok = no
   read only = yes
   create mask = 0700
# Windows clients look for this share name as a source of downloadable
# printer drivers
[print$]
   comment = Printer Drivers
   path = /var/lib/samba/printers
   browseable = yes
   read only = yes
   guest ok = no
[homes]
        comment = Home Directories
        path = /local_home/%U
        valid users = ha.net/%U
        read only = yes
        browseable = No

도메인 추가
sudo net ads join -U [email protected](도메인 이름은 대문자로 해야 함)