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Conventions
In this book, you will find a number of styles of text that distinguish between different kinds of information. Here are some examples of these styles, and an explanation of their meaning.
Code words in text are shown as follows: "To support renewable tickets, we add the max_renewable_life setting to your realm in kdc.conf."
A block of code is set as follows:
kdcdefaults]
kdc_ports = 88
[realms]
MYDOMAIN.COM = {
profile = /etc/krb5.conf
supported_enctypes = aes128-cts:normal des3-hmac-sha1:normal arcfour-hmac:normal des-hmac-sha1:normal des-cbc-md5:normal des-cbc-crc:normal des-cbc-crc:v4 des-cbc-crc:afs3
allow-null-ticket-addresses = true
database_name = /usr/local/var/krb5kdc/principal
acl_file = /usr/local/var/krb5kdc/kadm5.acl
admin_database_lockfile = /usr/local/var/krb5kd/kadm5_adb.lock
admin_keytab = FILE:/usr/local/var/krb5kdc/kadm5.keytab
key_stash_file = /usr/local/var/krb5kdc/.k5stash
kdc_ports = 88
kadmind_port = 749
max_life = 2d 0h 0m 0s
max_renewable_life = 7d 0h 0m 0s
}
Any command-line input or output is written as follows:
sudo service hadoop-hdfs-namenode start sudo service hadoop-hdfs-datanode start sudo service hadoop-hdfs-secondarynamenode start For MRV1 sudo service hadoop-0.20-mapreduce-jobtracker start
New terms and important words are shown in bold. Words that you see on the screen, in menus or dialog boxes for example, appear in the text like this: "clicking the Next button moves you to the next screen".