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You're reading from  Mastering Linux Security and Hardening - Third Edition

Product typeBook
Published inFeb 2023
Reading LevelIntermediate
PublisherPackt
ISBN-139781837630516
Edition3rd Edition
Languages
C
Tools
Linux
Concepts
Information Security
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Author (1)
Donald A. Tevault
Donald A. Tevault
author image
Donald A. Tevault

Donald A. Tevault - but you can call him Donnie - got involved with Linux way back in 2006, and has been working with it ever since. He holds the Linux Professional Institute Level 3-Security certification, and the GIAC Incident Handler certification. Donnie is a professional Linux trainer, and thanks to the magic of the internet, teaches Linux classes literally the world over from the comfort of his living room. He's also a Linux security researcher for an IoT security company.
Read more about Donald A. Tevault

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Understanding journald

You’ll find the journald logging system on any Linux distro that uses the systemd ecosystem. Instead of sending its messages to text files, journald sends messages to binary files. Instead of using normal Linux text file utilities to extract information, you have to use the journalctl utility. At the time of writing, I don’t know of any Linux distro that has made the complete transition to journald. Current Linux distros that use systemd run journald and rsyslog side by side. Currently, the default on RHEL-type systems is for journald log files to be temporary files that get erased every time you reboot the machine. (You can configure journald to make its log files persistent, but there’s probably not much point as long as we still need to keep the old rsyslog files.) On Ubuntu, the default is for both journald and rsyslogd to maintain persistent log files.

On RHEL 8/9-type distros, journald, instead of rsyslog, is now what actually...

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Mastering Linux Security and Hardening - Third Edition
Published in: Feb 2023Publisher: PacktISBN-13: 9781837630516
© 2023 Packt Publishing Limited All Rights Reserved

Author (1)

author image
Donald A. Tevault

Donald A. Tevault - but you can call him Donnie - got involved with Linux way back in 2006, and has been working with it ever since. He holds the Linux Professional Institute Level 3-Security certification, and the GIAC Incident Handler certification. Donnie is a professional Linux trainer, and thanks to the magic of the internet, teaches Linux classes literally the world over from the comfort of his living room. He's also a Linux security researcher for an IoT security company.
Read more about Donald A. Tevault

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