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Configuring systemd Journaling

Journals and their importance to `systemd` are a major change from the previous model of Linux logging, namely `Syslog` and its variants. As even the format of the logs or journal has changed, this is a true disruptor, or it could have been if the `systemd` team hadn't put in some key migration and integration features—such as forwarding to `syslog` and the excellent `journalctl` command, which we'll use heavily in this lab. In this lab, you'll gain the skills needed with `journalctl`: * From simple querying to viewing boot session entries * Monitoring a service, user's entries by UID, times, and ranges of entries * Extending your journal entries with standardized explanations from the Message Catalog.

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Labs

Path Info

Level
Clock icon Intermediate
Duration
Clock icon 30m
Published
Clock icon Sep 18, 2020

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Table of Contents

  1. Challenge

    Query and View Journal Entries Including Boot Sessions

    • View journal entries for a user and the system.
    • View available boot sessions and entries.
  2. Challenge

    Monitor Services, CGroups, and Ranges

    • Monitor a service's entries.
    • View a user's scope entries.
    • View entries based on times and ranges.
  3. Challenge

    Query User and Process Entries, and Add Explanations

    • Find a user's UID and journal entries for it.
    • Find a process ID and view its entries.
    • View the Message Catalog.
    • Enhance journal entries with explanations.

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