[root@centos8 ~]# kinit administrator
Password for administrator@TEST.JP:
[root@centos8 ~]# net ads join -U administrator
Enter administrator's password:
Using short domain name -- TEST
Joined 'CENTOS8' to dns domain 'test.jp'
No DNS domain configured for centos8. Unable to perform DNS Update.
DNS update failed: NT_STATUS_INVALID_PARAMETER
[root@centos8 ~]# systemctl restart winbind
[root@centos8 ~]# wbinfo -u
guest
administrator
krbtgt
chibi
[root@centos8 ~]# wbinfo -n chibi
S-1-5-21-4252828235-1945649609-3318306072-1103 SID_USER (1)
[root@centos8 ~]# net ads info
LDAP server: 192.168.1.53
LDAP server name: dc2.test.jp
Realm: TEST.JP
Bind Path: dc=TEST,dc=JP
LDAP port: 389
Server time: 金, 16 10月 2020 02:23:55 JST
KDC server: 192.168.1.53
Server time offset: -6
Last machine account password change: 金, 16 10月 2020 02:22:41 JST
[root@centos8 ~]# host -4 dc
dc.test.jp has address 192.168.1.28
dc.test.jp has address 192.168.1.27
dc.test.jp has IPv6 address 2400:4052:46e0:b700:5440:7997:1f70:6066
dc.test.jp has IPv6 address 2400:4052:46e0:b700:5021:a5ac:5882:f185
[root@centos8 ~]# host -4 dc1
dc1.test.jp has address 192.168.1.30
dc1.test.jp has IPv6 address 2400:4052:46e0:b700:79f0:d44d:dc7a:b245
[root@centos8 ~]# host -4 dc2
dc2.test.jp has address 192.168.1.53
dc2.test.jp has IPv6 address 2400:4052:46e0:b700:d9fb:4f0:1b8c:d399
[root@centos8 ~]# host -t SRV _ldap._tcp.test.jp
_ldap._tcp.test.jp has SRV record 0 100 389 dc2.test.jp.
_ldap._tcp.test.jp has SRV record 0 100 389 dc.test.jp.
_ldap._tcp.test.jp has SRV record 0 100 389 dc1.test.jp.
[root@centos8 ~]# host -t SRV _kerberos._udp.test.jp
_kerberos._udp.test.jp has SRV record 0 100 88 dc1.test.jp.
_kerberos._udp.test.jp has SRV record 0 100 88 dc2.test.jp.
_kerberos._udp.test.jp has SRV record 0 100 88 dc.test.jp.
[root@centos8 ~]# host -t A test.jp
test.jp has address 192.168.1.30
test.jp has address 192.168.1.28
test.jp has address 192.168.1.27
test.jp has address 192.168.1.53
[root@centos8 ~]# smbclient -L localhost -U%
do_connect: Connection to localhost failed (Error NT_STATUS_CONNECTION_REFUSED)
[root@centos8 ~]# smbclient -L 192.168.1.27 -U%

        Sharename       Type      Comment
        ---------       ----      -------
SMB1 disabled -- no workgroup available
[root@centos8 ~]# smbclient //192.168.1.27/netlogon -Uadministrator
Enter TEST\administrator's password:
Try "help" to get a list of possible commands.
smb: \> ls
  .                                   D        0  Sun Sep  6 14:00:34 2020
  ..                                  D        0  Sun Sep  6 14:00:34 2020

                124869119 blocks of size 4096. 105185292 blocks available
smb: \> exit
[root@centos8 ~]# smbclient //192.168.1.27/sysvol -Uadministrator
Enter TEST\administrator's password:
Try "help" to get a list of possible commands.
smb: \> ls
  .                                   D        0  Sun Sep  6 14:00:34 2020
  ..                                  D        0  Sun Sep  6 14:00:34 2020
  test.jp                             D        0  Sun Sep  6 14:00:34 2020

                124869119 blocks of size 4096. 105185292 blocks available
smb: \> exit
[root@centos8 ~]# cat /etc/redhat-release
CentOS Linux release 8.2.2004 (Core)
[root@centos8 ~]# smbd -V
Version 4.11.2
[root@centos8 ~]# net ads lookup
Information for Domain Controller: 192.168.1.53

Response Type: LOGON_SAM_LOGON_RESPONSE_EX
GUID: afb28d02-8fbc-40b1-9f73-c6d23cce32bb
Flags:
        Is a PDC:                                   no
        Is a GC of the forest:                      yes
        Is an LDAP server:                          yes
        Supports DS:                                yes
        Is running a KDC:                           yes
        Is running time services:                   yes
        Is the closest DC:                          yes
        Is writable:                                yes
        Has a hardware clock:                       no
        Is a non-domain NC serviced by LDAP server: no
        Is NT6 DC that has some secrets:            no
        Is NT6 DC that has all secrets:             yes
        Runs Active Directory Web Services:         yes
        Runs on Windows 2012 or later:              yes
Forest: test.jp
Domain: test.jp
Domain Controller: dc2.test.jp
Pre-Win2k Domain: TEST
Pre-Win2k Hostname: DC2
Server Site Name: Default-First-Site-Name
Client Site Name: Default-First-Site-Name
NT Version: 5
LMNT Token: ffff
LM20 Token: ffff
[root@centos8 ~]# dig test.jp

; <<>> DiG 9.11.13-RedHat-9.11.13-6.el8_2.1 <<>> test.jp
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 50370
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 4, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4000
;; QUESTION SECTION:
;test.jp.                       IN      A

;; ANSWER SECTION:
test.jp.                600     IN      A       192.168.1.27
test.jp.                600     IN      A       192.168.1.28
test.jp.                600     IN      A       192.168.1.53
test.jp.                600     IN      A       192.168.1.30

;; Query time: 1 msec
;; SERVER: 192.168.1.27#53(192.168.1.27)
;; WHEN: 金 10月 16 02:28:04 JST 2020
;; MSG SIZE  rcvd: 100

[root@centos8 ~]# klist
Ticket cache: FILE:/tmp/krb5cc_0
Default principal: administrator@TEST.JP

Valid starting       Expires              Service principal
2020-10-16T02:22:06  2020-10-16T12:22:06  krbtgt/TEST.JP@TEST.JP
        renew until 2020-10-17T02:22:01
[root@centos8 ~]# wbinfo -t
checking the trust secret for domain TEST via RPC calls succeeded
[root@centos8 ~]# wbinfo -g
domain computers
cert publishers
domain users
domain guests
ras and ias servers
domain admins
schema admins
enterprise admins
group policy creator owners
allowed rodc password replication group
denied rodc password replication group
enterprise read-only domain controllers
cloneable domain controllers
protected users
enterprise key admins
key admins
read-only domain controllers
domain controllers
dnsadmins
dnsupdateproxy
[root@centos8 ~]#