Lab
A Cloud Guru

Reviewing System Logs and Updating the journald Configuration

In this hands-on lab, you will be reviewing the `secure` log located in the `/var/log` directory to check for any critical issues and will make a backup copy of the current log file in your home directory. After backing up the `secure` log, you will check to see if the system journals are configured to be persistent. If not, update the configuration to be persistent and limit the size of the journal files. *This course is not approved or sponsored by Red Hat.*

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Path Info

Level

Beginner

Duration

30m

Published

Dec 04, 2020

Challenge

Review the /var/log/secure Log File for Any Critical Authorization Issues
- Use the less command to view the file.
- Jump to the end of the file and tail it for a bit to view inbound traffic.
Challenge

Create a Backup of the /var/log/secure Log File
- Create a log_archive directory in your home directory.
- Copy the /var/log/secure file to the log_archive directory. Be sure to preserve extended attributes and security contexts when copying the file.
Challenge

Determine If Journals Are Configured to Be Persistent
- Confirm the /var/log/journal directory exists.
- Create the /var/log/journal directory.
- Confirm journal data is being written to the directory.
Challenge

Update the journald Configuration to Limit the Size of Journal Files
- Review the /etc/systemd/journald.conf.
- Add SystemMaxUse=50M to the end of the configuration file.
- Cycle the journald service.

Author

A Cloud Guru

The Cloud Content team comprises subject matter experts hyper focused on services offered by the leading cloud vendors (AWS, GCP, and Azure), as well as cloud-related technologies such as Linux and DevOps. The team is thrilled to share their knowledge to help you build modern tech solutions from the ground up, secure and optimize your environments, and so much more!

What's a lab?

Hands-on Labs are real environments created by industry experts to help you learn. These environments help you gain knowledge and experience, practice without compromising your system, test without risk, destroy without fear, and let you learn from your mistakes. Hands-on Labs: practice your skills before delivering in the real world.