Lab
A Cloud Guru

Configure Ansible Managed Nodes

The power of Ansible comes in being able to remotely manage a fleet of servers. For that to happen though we need to first configure our managed nodes. In this lab we'll practice configuring these nodes. *This course is not approved or sponsored by Red Hat.*

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Path Info

Level

Intermediate

Duration

30m

Published

Oct 18, 2019

Challenge

Set up the Ansible Inventory
We need to make sure Ansible has the new servers in its inventory. Edit /etc/ansible/hosts and add lines similar to the following:
```
[webservers]
WebServer1

[dbservers]
DBServer1

[admins]
AdminServer1
```
Challenge

Set up Passwordless SSH Between Nodes

Note that we already have a SSH key in root's .ssh directory. We don't have to create a new one though. Let's just re-use what we have.

Copy that key to one of the new servers:

ssh-copy-id ansible@WebServer1

Put in the password and the key will be copied over. Repeat this with the other two servers.
Challenge

Configure Passwordless Privilege Escalation

Connect to WebServer1 as cloud_user. From there, use sudo to escalate and have root privileges.

As root, run visudo. Add ansible ALL=(ALL) NOPASSWD: ALL to the end of the file.

Repeat this on the other two servers.
Challenge

Ensure Correct Configuration

Make sure that everything was done correctly by running ansible all -m ping --become to have Ansible attempt to connect to all the other servers and escalate privileges.

Author

A Cloud Guru

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.