centos下 kerberos安装手册

（一）yum方式安装

安装krb的server
步骤一：
yum install krb5-server

安装krb 的客户端
yum install krb5-workstation krb5-libs krb5-auth-dialog

（二）修改配置

修改三个配置文件
#第一个文件，修改[realms]里的kdc和admin_server所在主机，EXAMPLE.COM这个域名也应修改

vi /etc/krb5.conf

[libdefaults]
renew_lifetime = 7d
forwardable = true
default_realm = STARYEA.COM
ticket_lifetime = 24h
dns_lookup_realm = false
dns_lookup_kdc = false
#default_tgs_enctypes = aes des3-cbc-sha1 rc4 des-cbc-md5
#default_tkt_enctypes = aes des3-cbc-sha1 rc4 des-cbc-md5

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

[realms]
STARYEA.COM = {
admin_server = nn2:88
kdc = nn2:88
}

[domain_realm]
.staryea.com = STARYEA.COM
staryea.com = STARYEA.COM

vi /var/kerberos/krb5kdc/kdc.conf
[kdcdefaults]
kdc_ports = 88
kdc_tcp_ports = 88

[realms]
STARYEA.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 des-hmac-sha1:normal des-cbc-md5:normal des-cbc-crc:normal
}

编辑 Kerberos 访问控制列表文件 (kadm5.acl) 文件应包含允许管理 KDC 的所有主体名称。
[root@nn2 Packages]# cat /var/kerberos/krb5kdc/kadm5.acl
*/admin@STARYEA.COM *

(三）使用命令 创建 kerberos的database 

kdb5_util create -s -r STARYEA.COM

重启服务

service krb5kdc restart

service kadmin start

(三） 创建 kerberos的管理员

#kadmin.local
kadmin.local: addprinc admin/admin@STARYEA.COM
WARNING: no policy specified for admin/admin@STARYEA.COM; defaulting to no policy
Enter password for principal "admin/admin@STARYEA.COM": admin123
Re-enter password for principal "admin/admin@STARYEA.COM": admin123
Principal "admin/admin@STARYEA.COM" created.

(四） 创建 kerberos的用户

 #kadmin.local 

addprinc -randkey it1/主机的全域名@STARYEA.COM

导出keytab

xst -k /home/it1/it1.app.keytab it1/主机的全域名@STARYEA.COM

一般使用400 权限给用户

chown it1.it1  /home/it1/it1.app.keytab

chmod 400  /home/it1/it1.app.keytab

(五）使用

su - it1

kinit -kt /home/it1/it1.app.keytab it1/主机的全域名@STARYEA.COM