在Ambari上添加Kerberos

一、准备阶段

1.下载jce并解压
jce下载地址：http://www.oracle.com/technetwork/java/javase/downloads/jce8-download-2133166.html

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[root@manager ~]# ls
jce_policy-8.zip
[root@manager ~]# unzip -o -j -q jce_policy-8.zip -d /usr/local/jdk/jre/lib/security/

2.安装krb5

[root@manager ~]# yum install -y krb5-libs krb5-workstation

3.修改配置文件

[root@manager ~]# 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
 ticket_lifetime = 24h
 renew_lifetime = 7d
 forwardable = true
 rdns = false
 default_realm = KRB.COM #修改为认证域
 default_ccache_name = KEYRING:persistent:%{uid}

[realms]
 KRB.COM = {
  kdc = 192.168.10.131 #KDC的地址
  admin_server = 192.168.10.131 #kadmin服务地址
 }

[domain_realm]

#以上需要在服务端和客户端都配置，可以在服务端配置好以后使用scp拷贝。

4.在服务端安装krb5-server

[root@manager ~]# yum install -y krb5-server

5.修改服务端的配置文件

[root@manager ~]# cat /var/kerberos/krb5kdc/kdc.conf 
[kdcdefaults]
 kdc_ports = 88
 kdc_tcp_ports = 88

[realms]
 KRB.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
 }

二、配置阶段

1.创建kerberos数据库

[root@manager ~]# kdb5_util create -s -r KRB.COM
Loading random data
Initializing database '/var/kerberos/krb5kdc/principal' for realm 'KRB.COM',
master key name 'K/M@KRB.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:

2.创建管理员

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

3.给管理员账户添加acl权限

[root@manager ~]# cat /var/kerberos/krb5kdc/kadm5.acl 
*/admin@KRB.COM *

4.启动服务和设置开机自启

[root@manager ~]# systemctl start krb5kdc
[root@manager ~]# systemctl start kadmin
[root@manager ~]# systemctl enable krb5kdc
[root@manager ~]# systemctl enable kadmin

5.在客户端测试连接

[root@vm1 ~]# kadmin -p admin/admin
Authenticating as principal admin/admin with password.
Password for admin/admin@KRB.COM: 
kadmin:  listprincs 
K/M@KRB.COM
admin/admin@KRB.COM
kadmin/admin@KRB.COM
kadmin/changepw@KRB.COM
kadmin/manager@KRB.COM
kiprop/manager@KRB.COM
krbtgt/KRB.COM@KRB.COM
kadmin:  quit

6.重新启动ambari-server