Troubleshoot Ansible Connectivity to Managed Hosts
In this lab, you'll practice how to troubleshoot common connectivity issues between an Ansible control node and managed hosts. When you're finished, you'll be able to quickly diagnose and resolve these common issues.
Terms and conditions apply.
Challenge
Get Started in the Lab Environment
Here are the initial instructions and explanation of the lab environment. Read this while your environment is busy creating itself from nothing. Yes, this violates physics; we know. How fun!
Challenge
Diagnose an Incorrect IPv4 Address
To start this lab, you will observe the symptoms Ansible exhibits when attempting to connect to a managed host through an incorrect IPv4 address, and will then correct the issue.
Challenge
Fix SSH Running on Non-Default TCP Port
You will diagnose and resolve a connectivity issue between the Ansible control node and a managed host resulting from the SSH server of the managed host running on a non-default TCP port.
Challenge
Address Firewall Rules Blocking SSH From Ansible Control Node
In this challenge, you will fix a connectivity issue between the Ansible control node and a managed host resulting from firewall rules blocking SSH connections from the Ansible control node.
Challenge
Fix Incorrect Credentials
You will detect and troubleshoot an authentication issue between the Ansible control node and a managed host resulting from incorrect credentials in Ansible's inventory file.
Challenge
Resolve an SSH Key Fingerprint Mismatch
When key fingerprints do not match, connectivity between the control node and a managed host will fail. You will learn how to notice and correct this problem.
Challenge
Examine the Effects of Enabling Host Key Checking
You will explore the effects of host key checking being enabled on the Ansible control node.
Challenge
Correct a Privilege Escalation Failure
To finish up this lab, you will resolve an error resulting from incorrect privilege escalation credentials for a managed host in Ansible's inventory file.
Challenge
The Last Challenge
Welcome to the final challenge! This is your last chance to experiment in the environment. Clicking Finish Lab will end this little world that flittered into existence just for you.
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.
Recommended prerequisites
- Understanding of Ansible's YAML-based inventory structure and purpose.
- Understanding of Ansible ad-hoc commands.
- Basic understanding of how SSH connectivity to hosts works.
- Know how to use the linux CLI, and a CLI text editor, either vim or nano