最近搞了一下kerberos，准备写一个系列，介绍kerberos的安装，和常用组件kerberos配置，今天进入第一篇：kerberOS安装
具体kerberos是什么东西，大家可以百度查一下，这里就不做介绍，直接上干货！
这里kerberos有个大坑，大家一定要注意
1、主机名不能有大写
2、主机名不能有下划线
具体还是否有其他限制，我还不清楚，这个是我踩的坑，所以大家配置kerberos尽量把主机名搞的正常的一些，不要特殊
大数据安全系列的其它文章
https://www.cnblogs.com/bainianminguo/p/12548076.html-----------安装kerberos
https://www.cnblogs.com/bainianminguo/p/12548334.html-----------hadoop的kerberos认证
https://www.cnblogs.com/bainianminguo/p/12548175.html-----------zookeeper的kerberos认证
https://www.cnblogs.com/bainianminguo/p/12584732.html-----------hive的kerberos认证
https://www.cnblogs.com/bainianminguo/p/12584880.html-----------es的search-guard认证
https://www.cnblogs.com/bainianminguo/p/12639821.html-----------flink的kerberos认证
https://www.cnblogs.com/bainianminguo/p/12639887.html-----------spark的kerberos认证
1、通过yum的方式安装kerberos
yum install krb5-workstation krb5-libs krb5-auth-dialog krb5-server
2、执行完命令后，会生成kerberos配置文件，krb5.conf和kdc.conf
[root@cluster2-host1 etc]# ll krb5.conf -rw-r--r--. 1 root root 641 Sep 13 12:40 krb5.conf [root@cluster2-host1 etc]# pwd /etc
[root@cluster2-host1 etc]# ll /var/kerberos/krb5kdc/kdc.conf -rw-------. 1 root root 451 Sep 13 12:40 /var/kerberos/krb5kdc/kdc.conf
3、修改kdc.conf配置文件
[kdcdefaults]
kdc_ports = 88
kdc_tcp_ports = 88
[realms]
HADOOP.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 = 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
max_life = 1d
max_renewable_life = 7d
}
注：aes256-cts:normal这个算法需要额外的jar包支持，可以干掉
4、修改krb5.conf配置文件
[root@cluster2-host1 etc]# cat 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
pkinit_anchors = /etc/pki/tls/certs/ca-bundle.crt
default_realm = HADOOP.COM
udp_preference_limit = 1
#default_ccache_name = KEYRING:persistent:%{uid}
[realms]
HADOOP.COM = {
kdc = cluster2-host1
admin_server = cluster2-host1
}
[domain_realm] 指定域名和域的映射关系
# .example.com = EXAMPLE.COM
# example.com = EXAMPLE.COM
5、配置kerberos的数据库，这里我设置的密码都是123456
[root@cluster2-host1 etc]# !671 kdb5_util create -s -r HADOOP.COM Loading random data Initializing database '/var/kerberos/krb5kdc/principal' for realm 'HADOOP.COM', master key name 'K/M@HADOOP.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:
检查生成的数据库文件
[root@cluster2-host1 etc]# ll /var/kerberos/krb5kdc/ total 24 -rw-------. 1 root root 22 Sep 13 12:40 kadm5.acl -rw-------. 1 root root 474 Mar 3 03:18 kdc.conf -rw-------. 1 root root 8192 Mar 3 03:18 principal -rw-------. 1 root root 8192 Mar 3 03:18 principal.kadm5 -rw-------. 1 root root 0 Mar 3 03:18 principal.kadm5.lock -rw-------. 1 root root 0 Mar 3 03:18 principal.ok
添加database administrator并设置密码为admin
[root@cluster2-host1 etc]# /usr/sbin/kadmin.local -q "addprinc admin/admin" Authenticating as principal root/admin@HADOOP.COM with password. WARNING: no policy specified for admin/admin@HADOOP.COM; defaulting to no policy Enter password for principal "admin/admin@HADOOP.COM": Re-enter password for principal "admin/admin@HADOOP.COM": Principal "admin/admin@HADOOP.COM" created.
6、设置krb5kdc/kadmin 开机自启动
[root@cluster2-host1 etc]# service krb5kdc start Redirecting to /bin/systemctl start krb5kdc.service [root@cluster2-host1 etc]# service kadmin start Redirecting to /bin/systemctl start kadmin.service [root@cluster2-host1 etc]# chkconfig krb5kdc on Note: Forwarding request to 'systemctl enable krb5kdc.service'. Created symlink from /etc/systemd/system/multi-user.target.wants/krb5kdc.service to /usr/lib/systemd/system/krb5kdc.service. [root@cluster2-host1 etc]# chkconfig kadmin on Note: Forwarding request to 'systemctl enable kadmin.service'. Created symlink from /etc/systemd/system/multi-user.target.wants/kadmin.service to /usr/lib/systemd/system/kadmin.service.
7、创建主体，密码设置为123456
[root@cluster2-host1 etc]# kadmin.local Authenticating as principal root/admin@HADOOP.COM with password. kadmin.local: kadmin.local: kadmin.local: kadmin.local: kadmin.local: list_principals K/M@HADOOP.COM admin/admin@HADOOP.COM kadmin/admin@HADOOP.COM kadmin/changepw@HADOOP.COM kadmin/cluster2-host1@HADOOP.COM kiprop/cluster2-host1@HADOOP.COM krbtgt/HADOOP.COM@HADOOP.COM kadmin.local: add_principal test/test@HADOOP.COM WARNING: no policy specified for test/test@HADOOP.COM; defaulting to no policy Enter password for principal "test/test@HADOOP.COM": Re-enter password for principal "test/test@HADOOP.COM": Principal "test/test@HADOOP.COM" created. kadmin.local: list_principals K/M@HADOOP.COM admin/admin@HADOOP.COM kadmin/admin@HADOOP.COM kadmin/changepw@HADOOP.COM kadmin/cluster2-host1@HADOOP.COM kiprop/cluster2-host1@HADOOP.COM krbtgt/HADOOP.COM@HADOOP.COM test/test@HADOOP.COM
8、另外两个节点配置kerberos的client
[root@cluster2-host3 bin]# yum install krb5-workstation krb5-libs krb5-auth-dialog -y
设置配置/etc/krb5.conf配置和server端保持一致
[root@cluster2-host1 etc]# scp /etc/krb5.conf root@cluster2-host2:/etc/krb5.conf krb5.conf 100% 651 0.6KB/s 00:00 [root@cluster2-host1 etc]# scp /etc/krb5.conf root@cluster2-host3:/etc/krb5.conf krb5.conf
9、使用用户名和密码的方式验证kerberos配置在客户端通过用户名和密码认证
[root@cluster2-host2 bin]# klist test/test klist: No credentials cache found (filename: test/test) [root@cluster2-host2 bin]# kinit test/test Password for test/test@HADOOP.COM: [root@cluster2-host2 bin]# klist Ticket cache: FILE:/tmp/krb5cc_0 Default principal: test/test@HADOOP.COM Valid starting Expires Service principal 03/03/2020 03:33:58 03/04/2020 03:33:58 krbtgt/HADOOP.COM@HADOOP.COM renew until 03/10/2020 04:33:58 [root@cluster2-host2 bin]# kdestroy [root@cluster2-host2 bin]# klist klist: No credentials cache found (filename: /tmp/krb5cc_0)
10、密钥的方式认证
在server端生成秘钥，并拷贝到client
[root@cluster2-host1 etc]# kadmin.local -q "xst -k /root/test.keytab test/test@HADOOP.COM" Authenticating as principal root/admin@HADOOP.COM with password. Entry for principal test/test@HADOOP.COM with kvno 2, encryption type aes128-cts-hmac-sha1-96 added to keytab WRFILE:/root/test.keytab. Entry for principal test/test@HADOOP.COM with kvno 2, encryption type des3-cbc-sha1 added to keytab WRFILE:/root/test.keytab. Entry for principal test/test@HADOOP.COM with kvno 2, encryption type arcfour-hmac added to keytab WRFILE:/root/test.keytab. Entry for principal test/test@HADOOP.COM with kvno 2, encryption type camellia256-cts-cmac added to keytab WRFILE:/root/test.keytab. Entry for principal test/test@HADOOP.COM with kvno 2, encryption type camellia128-cts-cmac added to keytab WRFILE:/root/test.keytab. Entry for principal test/test@HADOOP.COM with kvno 2, encryption type des-hmac-sha1 added to keytab WRFILE:/root/test.keytab. Entry for principal test/test@HADOOP.COM with kvno 2, encryption type des-cbc-md5 added to keytab WRFILE:/root/test.keytab. [root@cluster2-host1 etc]# scp /root/test.keytab root@cluster2-host2:/root/
在client通过秘钥登录
[root@cluster2-host2 bin]# kinit -kt /root/test.keytab test/test [root@cluster2-host2 bin]# klist Ticket cache: FILE:/tmp/krb5cc_0 Default principal: test/test@HADOOP.COM Valid starting Expires Service principal 03/03/2020 03:38:00 03/04/2020 03:38:00 krbtgt/HADOOP.COM@HADOOP.COM renew until 03/10/2020 04:38:00
这里要注意：
通过秘钥登录后，就不能通过用户名和密码登录了
至此，kerberos安装和配置完成
