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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

Clock icon Beginner
Clock icon 30m
Clock icon Dec 04, 2020

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Table of Contents

  1. 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.
  2. 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.
  3. 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.
  4. 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.

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