Tackling Ansible Scheduling with the `at` Command

Libraries: If you want this lab, consider one of these libraries.
Cloud

Tackling Ansible Scheduling with the `at` Command

Being able to schedule tasks in Ansible is a valuable skill. This is shown by the fact that it is an objective of the *Red Hat Certified Ansible Specialist* exam. The `at` command and its associated commands (`atq` and `atrm`) can be used to schedule tasks in Linux-based systems or those that support the use of the `at` command. The `at` command is useful for scheduling one-time tasks. In this hands-on lab, we will make use of the `at` module to create scheduled tasks and show how to set and remove a task from the list of jobs. *This course is not approved or sponsored by Red Hat.*

Get started Contact sales

Lab Info

Level

Intermediate

Last updated

Sep 04, 2025

Duration

30m

Challenge

Log in to the Ansible Control Node Server and Change to the `ansible` User
1. Sign in to the Ansible Control Node server using the cloud_user credentials, and change to the ansible user.
2. Test that Ansible is working:
  
  ansible all -m ping
  
  Note: It may take several minutes after the start of the lab for the test to work as expected.
Challenge

Create and Run a Playbook Called `install-at.yml` that Installs, Enables, and Starts the `at` Service on All Nodes
1. Create a playbook called install-at.yml that will install the at service on all nodes.
2. Enable the atd service and start the service as part of the playbook.
3. Run the playbook and ensure it installs, enables, and starts the service correctly.
Challenge

Create a Playbook Called `at-scheduled-task.yml` to Perform a Task on the Nodes in 20 Minutes
1. Using the at module, create a playbook called at-scheduled-task.yml that adds a scheduled task to the nodes.
2. The job should run in 20 minutes. The task to run is df -h > /tmp/diskspace.
Challenge

Run the `at-scheduled-task` Playbook and Test Each Node to Ensure the Task Is Scheduled
1. Use the atq command to ensure the df -h task has been scheduled.
Challenge

Create a Playbook Called `remove-at-task.yml` to Remove the Previously Scheduled Task
1. The remove-at-task.yml playbook should remove the task that was set in the at-scheduled-task.yml playbook.
2. We can test with the atq command to ensure the task has been removed.
  
  Note: If they have not, we must troubleshoot why they have not been removed.

About the author

Pluralsight Skills

Pluralsight Skills gives leaders confidence they have the skills needed to execute technology strategy. Technology teams can benchmark expertise across roles, speed up release cycles and build reliable, secure products. By leveraging our expert content, skill assessments and one-of-a-kind analytics, keep up with the pace of change, put the right people on the right projects and boost productivity. It's the most effective path to developing tech skills at scale.

Real skill practice before real-world application

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.

Learn by doing

Engage hands-on with the tools and technologies you’re learning. You pick the skill, we provide the credentials and environment.

Follow your guide

All labs have detailed instructions and objectives, guiding you through the learning process and ensuring you understand every step.

Turn time into mastery

On average, you retain 75% more of your learning if you take time to practice. Hands-on labs set you up for success to make those skills stick.