#135机器
[root@localhost ~]# hostnamectl  set-hostname node1.work.com
#136机器
[root@localhost ~]# hostnamectl  set-hostname node2.work.com
#配置hosts,2个机器都做
[root@localhost ~]# vim /etc/hosts

127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
::1         localhost localhost.localdomain localhost6 localhost6.localdomain6
192.168.31.135 node1.work.com
192.168.31.136 node2.work.com

[root@node1 ~]# yum -y install krb5-server krb5-libs krb5-auth-dialog krb5-workstation

[root@node1 ~]# cat /etc/krb5.conf
# Configuration snippets may be placed in this directory as well
includedir /etc/krb5.conf.d/

[logging]
 default = FILE:/var/log/krb5libs.log
 kdc = FILE:/var/log/krb5kdc.log
 admin_server = FILE:/var/log/kadmind.log

[libdefaults]
 dns_lookup_realm = false
 dns_lookup_kdc = false
 ticket_lifetime = 24h
 renew_lifetime = 7d
 forwardable = true
 rdns = false
 pkinit_anchors = FILE:/etc/pki/tls/certs/ca-bundle.crt
 default_realm = work.com
 default_ccache_name = KEYRING:persistent:%{uid}

[realms]
work.com = {
  kdc = node1.work.com
  admin_server = node1.work.com
 }

[domain_realm]
# .example.com = EXAMPLE.COM
# example.com = EXAMPLE.COM

#配置管理员账号
[root@node1 ~]# vim /var/kerberos/krb5kdc/kadm5.acl 

*/admin@work.com        *
[root@node1 ~]# vi /var/kerberos/krb5kdc/kdc.conf

[kdcdefaults]
 kdc_ports = 88
 kdc_tcp_ports = 88

[realms]
 work.com = {
  #master_key_type = aes256-cts
  acl_file = /var/kerberos/krb5kdc/kadm5.acl
  dict_file = /usr/share/dict/words
  admin_keytab = /var/kerberos/krb5kdc/kadm5.keytab
  supported_enctypes = aes256-cts:normal aes128-cts:normal des3-hmac-sha1:normal arcfour-hmac:normal camellia256-cts:normal camellia128-cts:normal des-hmac-sha1:normal des-cbc-md5:normal des-cbc-crc:normal
 }

[root@node1 ~]# kdb5_util create -r work.com -s
Loading random data
Initializing database '/var/kerberos/krb5kdc/principal' for realm 'work.com',
master key name 'K/M@work.com'
You will be prompted for the database Master Password.
It is important that you NOT FORGET this password.
Enter KDC database master key: 
Re-enter KDC database master key to verify: 

[root@node1 ~]# kadmin.local
Authenticating as principal root/admin@work.com with password.
kadmin.local:   addprinc admin/admin@work.com
WARNING: no policy specified for admin/admin@work.com; defaulting to no policy
Enter password for principal "admin/admin@work.com": 
Re-enter password for principal "admin/admin@work.com": 
Principal "admin/admin@work.com" created.
kadmin.local:  exit

[root@node1 ~]# systemctl enable krb5kdc
Created symlink from /etc/systemd/system/multi-user.target.wants/krb5kdc.service to /usr/lib/systemd/system/krb5kdc.service.
[root@node1 ~]# systemctl enable kadmin
Created symlink from /etc/systemd/system/multi-user.target.wants/kadmin.service to /usr/lib/systemd/system/kadmin.service.
[root@node1 ~]# systemctl start krb5kdc
[root@node1 ~]# systemctl start kadmin

[root@node1 ~]# vim /etc/krb5.conf
[realms]
work.com = {
  kdc = node1.work.com
  kdc = node2.work.com #增加
  admin_server = node1.work.com
 }

#格式addprinc -randkey host/[hostname]
#ktadd  host/[hostname]
[root@node1 ~]# kadmin.local 
Authenticating as principal root/admin@work.com with password.
kadmin.local:  addprinc -randkey host/node1.work.com
WARNING: no policy specified for host/node1.work.com@work.com; defaulting to no policy
Principal "host/node1.work.com@work.com" created.
kadmin.local:  addprinc -randkey host/node2.work.com
WARNING: no policy specified for host/node2.work.com@work.com; defaulting to no policy
Principal "host/node2.work.com@work.com" created.
kadmin.local:  ktadd host/node1.work.com
Entry for principal host/node1.work.com with kvno 2, encryption type aes256-cts-hmac-sha1-96 added to keytab FILE:/etc/krb5.keytab.
Entry for principal host/node1.work.com with kvno 2, encryption type aes128-cts-hmac-sha1-96 added to keytab FILE:/etc/krb5.keytab.
Entry for principal host/node1.work.com with kvno 2, encryption type des3-cbc-sha1 added to keytab FILE:/etc/krb5.keytab.
Entry for principal host/node1.work.com with kvno 2, encryption type arcfour-hmac added to keytab FILE:/etc/krb5.keytab.
Entry for principal host/node1.work.com with kvno 2, encryption type camellia256-cts-cmac added to keytab FILE:/etc/krb5.keytab.
Entry for principal host/node1.work.com with kvno 2, encryption type camellia128-cts-cmac added to keytab FILE:/etc/krb5.keytab.
Entry for principal host/node1.work.com with kvno 2, encryption type des-hmac-sha1 added to keytab FILE:/etc/krb5.keytab.
Entry for principal host/node1.work.com with kvno 2, encryption type des-cbc-md5 added to keytab FILE:/etc/krb5.keytab.
kadmin.local:  ktadd host/node2.work.com
Entry for principal host/node2.work.com with kvno 2, encryption type aes256-cts-hmac-sha1-96 added to keytab FILE:/etc/krb5.keytab.
Entry for principal host/node2.work.com with kvno 2, encryption type aes128-cts-hmac-sha1-96 added to keytab FILE:/etc/krb5.keytab.
Entry for principal host/node2.work.com with kvno 2, encryption type des3-cbc-sha1 added to keytab FILE:/etc/krb5.keytab.
Entry for principal host/node2.work.com with kvno 2, encryption type arcfour-hmac added to keytab FILE:/etc/krb5.keytab.
Entry for principal host/node2.work.com with kvno 2, encryption type camellia256-cts-cmac added to keytab FILE:/etc/krb5.keytab.
Entry for principal host/node2.work.com with kvno 2, encryption type camellia128-cts-cmac added to keytab FILE:/etc/krb5.keytab.
Entry for principal host/node2.work.com with kvno 2, encryption type des-hmac-sha1 added to keytab FILE:/etc/krb5.keytab.
Entry for principal host/node2.work.com with kvno 2, encryption type des-cbc-md5 added to keytab FILE:/etc/krb5.keytab.
kadmin.local:  exit

[root@node1 ~]# scp /etc/krb5.conf /etc/krb5.keytab node2.work.com:/etc/
The authenticity of host 'node2.work.com (192.168.31.136)' can't be established.
ECDSA key fingerprint is SHA256:X/maKrI1kBkj2QroFg56IZHRoRygS/q/+tIuKyritzU.
ECDSA key fingerprint is MD5:39:14:8c:f9:41:71:e7:21:07:21:71:74:c1:63:b7:76.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added 'node2.work.com,192.168.31.136' (ECDSA) to the list of known hosts.
root@node2.work.com's password: 
krb5.conf                                                                 100%  669   373.7KB/s   00:00    
krb5.keytab                                                               100% 1186   958.8KB/s   00:00  
[root@node1 ~]# scp /var/kerberos/krb5kdc/{kadm5.acl,kdc.conf,.k5.work.com} node2.work.com:/var/kerberos/krb5kdc/
root@node2.work.com's password: 
kadm5.acl                                                                 100%   19    19.3KB/s   00:00    
kdc.conf                                                                  100%  448   266.0KB/s   00:00    
.k5.work.com                                                              100%   73    67.0KB/s   00:00 

#kpropd -S 或者systemctl start kprop
[root@node2 ~]# kpropd -S 
[root@node2 ~]# vim /var/kerberos/krb5kdc/kpropd.acl
host/node1.work.com@work.com
host/node2.work.com@work.com

#备份
[root@node1 ~]# kdb5_util dump /var/kerberos/krb5kdc/kdc.dump
#传递至从节点
[root@node1 ~]# kprop -f /var/kerberos/krb5kdc/kdc.dump node2.work.com
Database propagation to node2.work.com: SUCCEEDED

[root@node2 ~]# systemctl enable krb5kdc
Created symlink from /etc/systemd/system/multi-user.target.wants/krb5kdc.service to /usr/lib/systemd/system/krb5kdc.service.
[root@node2 ~]# systemctl start krb5kdc