Apprentice Level

Working with Log Files and Journals on RHEL 8

15 minutes

2 Learning Objectives

About this Hands-on Lab

System logging is an important function in Linux. Without logs, troubleshooting would be much more difficult. Even _with_ logs, you’re swimming in a sea of data. Knowing how to find what you’re looking for is important. In this hands-on lab, we will cover how to locate and interpret system log files and journals. We will also examine how we can preserve system journals across reboots.

**Red Hat Exam Requirements Covered:**
– Locate and interpret system log files and journals
– Preserve system journals

Learning Objectives

Successfully complete this lab by achieving the following learning objectives:

Locate and Interpret System Log Files and Journals

Query the journal for a number of entries
Query the journal for a list of boot session entries, then query a particular session
Perform simple journal queries
Query the journal for a range of entries based on date/time

Preserve System Journals

Determine the settings for the journal persistence
Create the needed directory
Confirm the journal has been made persistent
Ensure all entries are pushed to persistent storage

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Additional Resources

In this lab, you're the sysadmin of a server that has just been installed with the defaults and you want to ensure that all your system's journal entries from the first boot onward will always be available for your querying.

You'll investigate the current journal settings, the journal location, and then do both some simple and some more advanced queries of your existing journal to familiarize yourself with the commands and the expected outputs.

You'll then make the needed changes to ensure that your system's journal will be located in the /var/log/journal directory and be persistent across system reboots.

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Quickly check your knowledge on a variety of topics and know where to brush up with short quizzes.

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Get the help you need, when you need it, from industry experts and other learners in the community — and help others in turn.

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Learn off the grid

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Get your hands cloudy

Learn by doing with guided labs based on real-world scenarios in a secure, risk-free environment. Build new skills in as little as 15 minutes.

Practice Exams

Put your skills to the test

Prepare for your certs with practice exams that mimic the real thing. Plus, get personalized pointers on how to improve your score.

Interactive Diagrams

Study aids on demand

Snag clickable, PDF versions of core concepts to revisit later. Our diagrams make great study aids, help build retention, and can act as handy cheat sheets for a quick refresher down the road.

Video Transcripts & Captions

For the record

Read along when sound isn’t an option and skip furiously scribbling notes. Our transcripts and captions are also fully searchable, making it easy to find exactly what you’re looking for.

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Email Support

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Spin up pre-configured, auto-provisioned servers in just a few clicks. Cloud along with courses, practice whenever you feel like it, and never worry about a surprise cloud bill.

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Working with Log Files and Journals on RHEL 8

About this Hands-on Lab

Learning Objectives

Additional Resources

Plans & Pricing

Choosing is the first step

Business Basic

Business Plus

Learning without limits

Learn faster by doing

Take your teams from novice to guru

Cloud on demand

SSH on demand

Learn by doing

Keep up with the cloud

Put skills to the test

Pop quiz, hot shot

Cloud with friends

Keep ACG in your pocket

Learn off the grid

Achievement unlocked

For the record

Study aids on demand

We’re here to help

One dashboard to rule them all

Know where you stand

Get to the cloud faster

Learn better together

Skills at a glance

Easy organization by teams

Invite 10 to 10,000 or more

Connect all the dots

Get your bits

We’ve got your back

We’ll show you the ropes

Plans & Pricing

Choosing is the first step

Free

Personal Basic

Personal Plus

Learn without limits

Pop quiz, hot shot

Keep up with the cloud

Cloud with friends

Go from novice to guru in your chose specialty

Keep ACG in your pocket

Learn off the grid

Get your hands cloudy

Put your skills to the test

Study aids on demand

For the record

Achievement unlocked

We’re here to help

Cloud on demand

SSH on demand

Learn by doing

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