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EX294 Exam Preparations

Repository contains exercises preparing for EX294 exam. It should be treated as a database of questions but the readers need to keep in mind that none of them was taken from the actual test. They were created based on the study point available at RedHat's website

Inspiration

Content present in the repository is inspierd by other people' sample exams, redhat training exercises and my own invention. Use links below to check them out

Infrastructure assumptions

In order to perform the exercises plan of the infrastructure must be established. What I present is similar to configuration used by RedHat in their course preparing for the exam - RH294. Look at one of my repositories to save time provisioning the machines on your own and have a cluster that is you can exercise against

Hosts

There are five servers used in total throughout the objectives. All ansible code should be written and executed from the controller node. Most of the exercises are targetted at changing configuration of managed host but modification of controller is something that the person preparing for the test should be able to do as well

  • controller - control node
  • managed1 - managed node
  • managed2 - managed node
  • managed3 - managed node
  • managed4 - managed node

Network

Access to each host should be possible with use of short name as well as fqdn which is build by concatenating short name with .example.com, e. g. controller.example.com. All of the nodes should have NAT access on top of direct access to each other

Users

Initially, there is a single user created on the servers

  • root - accessed by password vagrant

Authentication against other servers

Managed nodes can be accessed via ssh from the controller, without password with use of root user

System

All machines were provisioned with RHEL8/CentOS8 system

Requirements

  • ansible 2.8 - on control node
  • python3 - on both control and managed
  • sshd - up and running everywhere