The Red Hat Certified Engineer (RHCE) exam for Red Hat Enterprise Linux 8 Exam (EX294) validates your ability to automate system administration tasks using Ansible. This certification is designed for IT professionals who have already earned their Red Hat Certified System Administrator credential and want to advance their automation skills. This page outlines the exam structure, core topics, and practical preparation strategies to help you succeed on test day.
Use this topic map to guide your study for RedHat EX294 (Red Hat Certified Engineer (RHCE) exam for Red Hat Enterprise Linux 8 Exam) within the Red Hat Certified Engineer path.
The EX294 exam measures both theoretical knowledge and practical ability to implement Ansible automation. Questions are designed to assess your hands-on skills in configuring systems and writing working automation code.
Questions progress in difficulty and emphasize practical application over memorization, reflecting how Ansible is used in production environments.
An effective study plan breaks the exam topics into weekly goals and combines reading, hands-on practice, and timed review. Start with foundational Ansible concepts, move into playbook and role writing, then progress to advanced features and real-world scenarios.
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Playbook and role creation, along with Ansible module usage for system administration, typically represent the largest portion of the exam. Hands-on tasks emphasize these areas because they reflect real-world automation work. A solid understanding of control node setup and managed node configuration is also essential, as these form the foundation for all automation tasks.
In practice, you set up a control node with Ansible installed and SSH keys, configure managed nodes to accept connections, then write and run playbooks from the control node to automate tasks on the managed nodes. Understanding this end-to-end flow helps you see why each topic matters and how configuration decisions in one area affect the others.
Hands-on experience is critical for EX294 because the exam includes practical coding tasks. Prioritize labs that cover control node installation, SSH key setup, writing basic playbooks, creating roles, and using common modules like yum, service, user, and copy. Working through at least 10-15 complete playbook exercises before the exam significantly improves your confidence and speed.
Common errors include incorrect YAML syntax (spacing and indentation matter in playbooks), forgetting to configure SSH passwordless authentication on managed nodes, using the wrong module for a task, and not handling errors or edge cases in playbooks. Testing your playbooks in a lab before the exam catches most of these issues early.
In the final week, focus on timed practice tests to build pacing and identify remaining weak areas, then drill those specific topics with hands-on labs. Review your notes on role structure, variable scoping, and handler usage, as these are frequent sources of confusion. Avoid learning entirely new topics; instead, reinforce what you have already studied and practice troubleshooting broken playbooks.
Install and configure Ansible on the control-node control.realmX.example.com as
follows:
-------------------------------------------------------------------------------------------
--> Install the required packages
--> Create a static inventory file called /home/admin/ansible/inventory as follows:
node1.realmX.example.com is a member of the dev host group
node2.realmX.example.com is a member of the test host group
node3.realmX.example.com & node4.realmX.example.com are members of the prod
host group
node5.realmX.example.com is a member of the balancers host group.
prod group is a member of the webservers host group
--> Create a configuration file called ansible.cfg as follows:
--> The host inventory file /home/admin/ansible/inventory is defined
--> The location of roles used in playbooks is defined as /home/admin/ansible/ roles
Solution as:
Through physical host, login to workstation.lab.example.com with user root.
# ssh [email protected]
# hostname
workstation.lab.example.com
# yum install platform-python*
# su - admin
# pwd
/home/admin/
# vim .vimrc
# mkdir -p ansible/roles
# cd ansible
# vim inventory
[dev]
servera.lab.example.com
[test]
serverb.example.com
[prod]
serverc.example.com
serverd.example.com
[balancer]
serverd.lab.example.com
[webservers:children]
prod
:!wq
# vim ansible.cfg
[defaults]
inventory = ./inventory
role_path = ./roles
remote_user = admin
ask_pass = false
[privilege_escalation]
become = true
become_method = sudo
become_user = root
become_ask_pass = false
:!wq
# ansible all ---list-hosts
Rekey an existing Ansible vault as follows:
-----------------------------------------------
* Download Ansible vault from http:// classroom.example.com /secret.yml to /home/
admin/ansible/
* The current vault password is curabete
* The new vault password is newvare
* The vault remains in an encrypted state with the new password
Create a file called requirements.yml in /home/sandy/ansible/roles to install two roles. The source for the first role is geerlingguy.haproxy and geerlingguy.php. Name the first haproxy-role and the second php-role. The roles should be installed in /home/sandy/ansible/roles.
Create a file called packages.yml in /home/sandy/ansible to install some packages for the following hosts. On dev, prod and webservers install packages httpd, mod_ssl, and mariadb. On dev only install the development tools package. Also, on dev host update all the packages to the latest.
Create a playbook called packages.yml that:
----------------------------------------------
--> Installs the php and mariadb packages on hosts in the dev, test, and prod host
groups.
--> Installs the Development Tools package group on hosts in the dev host group.
--> Updates all packages to the latest version on hosts in the dev host group.