Skip to content

Contact sales

By filling out this form and clicking submit, you acknowledge our privacy policy.
  • Labs icon Lab
  • A Cloud Guru
Google Cloud Platform icon

Use Filters with Fluentd

In this lab, you will be tasked with creating a Fluentd configuration file. This configuration will have settings that will read the `/var/log/messages` file. You will add a filter to the configuration that will use the `grep `directive to search the events from the messages file and echo to the Fluentd log those events that contain the searched-for text. You will be provided a server that has Fluentd already installed and working.

Google Cloud Platform icon

Path Info

Clock icon Intermediate
Clock icon 30m
Clock icon Aug 19, 2022

Contact sales

By filling out this form and clicking submit, you acknowledge our privacy policy.

Table of Contents

  1. Challenge

    Create Configuration File

    Create a file called /etc/td-agent/filter-grep.conf. In this file, you will create a configuration that reads the contents of the /var/log/messages file and outputs to the Fluentd stdout.

  2. Challenge

    Add a Filter

    You will add a filter to the above configuration that uses grep to search using \<regexp> with the key of message for a pattern of test. The output will be directed to the stdout for Fluentd.

  3. Challenge

    Test the Filter Is Working

    Start Fluentd via td-agent and use the -c option to include the configuration file you just made.

    If you test by sending messages to the /var/log/messages log, you should use the word test as part of the testing.

    You should see only output that has test in the string.

    The command logger may be used to test sending your message to the log.

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.

Provided environment for hands-on practice

We will provide the credentials and environment necessary for you to practice right within your browser.

Guided walkthrough

Follow along with the author’s guided walkthrough and build something new in your provided environment!

Did you know?

On average, you retain 75% more of your learning if you get time for practice.

Start learning by doing today

View Plans