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This videos will walk you through the installation and configuration of MIT Kerberos KDC and Kadmin service on CenOS6 server. You can use this Kerberos service for your hadoop cluster.
Commands Description
yum install krb5-server krb5-libs krb5-workstation

Open and edit vi /etc/krb5.conf update the REALM name kdc server etc/krb5

Create kerberos database using kdb5_util create -s

Start services
service krb5kdc start
service kadmin start

Turn on the services
chkconfig krb5kdc on
chkconfig kadmin on

Create one admin principal using kadmin.local -q "addprinc admin/admin"

Open file /var/kerberos/krb5kdc/kadm5.acl and edit ACL

Restart kadmin service
Sample krb5.conf file here
default = FILE:/var/log/krb5libs.log
kdc = FILE:/var/log/krb5kdc.log
admin_server = FILE:/var/log/kadmind.log

default_realm = HADOOP.COM
dns_lookup_realm = false
dns_lookup_kdc = false
ticket_lifetime = 24h
renew_lifetime = 7d
forwardable = true

kdc =
admin_server =

[domain_realm] = HADOOP.COM = HADOOP.COM


export KRB5_TRACE=/dev/stdout

To disable above feature unset the variable using
unset KRB5_TRACE


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