In this book, you will find a number of text styles that distinguish between different kinds of information. Here are some examples of these styles and an explanation of their meaning.

Code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles are shown as follows: "If you want to change this, edit the NTP configuration file in /etc/ntp.conf."

Any command-line input or output is written as follows:

[root@node-1 ~]# service ntpd start
[root@node-1 ~]# chkconfig ntpd on

New terms and important words are shown in bold. Words that you see on the screen, for example, in menus or dialog boxes, appear in the text like this: "Check the Cluster Status parameter to ...

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