Kerberos5 安装

服务器布局

No.	hostname	role1	role2	remark
1	hadoop01	server	workstation
2	hadoop02		workstation
3	hadoop03		workstation

安装

hadoop01

[root@hadoop01 ~]# yum install -y krb5-server krb5-workstation krb5-libs   
[root@hadoop01 ~]# rpm -qa | grep krb5
krb5-server-1.15.1-46.el7.x86_64
krb5-libs-1.15.1-46.el7.x86_64
krb5-workstation-1.15.1-46.el7.x86_64

hadoop02,hadoop03

[root@hadoop03  ~]# yum install krb5-devel krb5-workstation -y

配置文件

/etc/krb5.conf

[libdefaults]renew_lifetime = 7dforwardable = truedefault_realm = jedy.com.cnticket_lifetime = 24hdns_lookup_realm = falsedns_lookup_kdc = falsedefault_ccache_name = /tmp/krb5cc_%{uid}default_tgs_enctypes = aes256-cts-hmac-sha1-96default_tkt_enctypes = aes256-cts-hmac-sha1-96permitted_enctypes = aes256-cts-hmac-sha1-96clockskew = 120udp_preference_limit = 1[logging]default = FILE:/var/log/krb5kdc.logadmin_server = FILE:/var/log/kadmind.logkdc = FILE:/var/log/krb5kdc.log[realms]jedy.com.cn = {admin_server = hadoop01.jedy.com.cnkdc = hadoop01.jedy.com.cn}
[domain_realm].jedy.com.cn = jedy.com.cnjedy.com.cn  = jedy.com.cn

/var/kerberos/krb5kdc/kdc.conf

[root@hadoop01 ~]# vim /var/kerberos/krb5kdc/kdc.conf
[kdcdefaults]kdc_ports = 88kdc_tcp_ports = 88[realms]jedy.com.cn = {#master_key_type = aes256-ctsmax_renewable_life = 7dacl_file = /var/kerberos/krb5kdc/kadm5.acldict_file = /usr/share/dict/wordsadmin_keytab = /var/kerberos/krb5kdc/kadm5.keytabsupported_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}

/var/kerberos/krb5kdc/kadm5.acl

[root@hadoop01 ~]# cat /var/kerberos/krb5kdc/kadm5.acl
*/[e-mail] *

同步到集群的所有Kerberos客户端节点相应目录（ssh打通）

scp /etc/krb5.conf hadoop02.jedy.com.cn:/etc
scp /etc/krb5.conf hadoop03.jedy.com.cn:/etc

服务管理

创建数据库

kdb5_util create -r jedy.com.cn -s # 密码Krb@202507

创建 kerberos 管理员

kadmin.local -q "addprinc admin/admin" # 密码Krb@202507

hadoop01 上启动服务

systemctl enable --now krb5kdc
systemctl enable --now kadmin 

kinit管理员验证

kinit admin/admin
klist

验证

进入控制台

kadmin.local
#查看principals
list_principals

添加一个新的 principal

addprinc user1
list_principals

删除 principal

delprinc user1
list_principals

查看principals

list_principals

退出

exit

遇到的问题

坑

如果hosts 文件中定义了主机名解析，则ambari 中启用kerberos 认证时，kadmin 主机必须写第一个解析的主机名。具体参照list_principals出的结果和/var/log/krb5kdc.log

最后

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