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LiNUX Lab

Dynamic Inventories

We deploy the real environment, you take the scenario-based labs on us. Hands-on, from anywhere, at any time.

Time required: 2 Hours

Scope

Download the Sample Dynamic Inventory Script - python.  Modify it to talk to localhost.  Use it to pull ansible_distribution.  Install httpd.  Once installed check it is there.  Then remove the httpd.  Check to ensure it's removed.

Suggested Pre Requisites

 

Standard tasks for all lab servers to set them up for self-use.

 

Log into the lab server as user then sudo to the root user.

 

sudo su -

 

Install ansible with

 

yum install ansible

 

Add the local server as a local group.

 

Edit the /etc/ansible/hosts file.  Put the following at the top.

 

[local]
localhost

[single]
localhost

[databases]
localhost

[other]
localhost

[temp]
localhost

 

Save the /etc/ansible/hosts file.

 

Create an ansible user to use with the labs. 

 sudo useradd -G wheel ansible

Log out and log in as the ansible user.

Create an ssh key for your user.

 

ssh-keygen

Use the ssh-copy-id command to copy your own ssh key to your own user's authority file.

 


ssh-copy-id localhost

Use the ansible all -m ping command to test connectivity to the localhost.   You should now be ready to use the lab server.

 

 

 

Objectives

Download the Sample Dynamic Inventory Script - python.  Modify it to talk to localhost.  Use it to pull ansible_distribution.  Install httpd.  Once installed check it is there.  Then remove the httpd.  Check to ensure it's removed.

Overview

Download the Sample Dynamic Inventory Script - python.  Modify it to talk to localhost.  Use it to pull ansible_distribution.  Install httpd.  Once installed check it is there.  Then remove the httpd.  Check to ensure it's removed.

Scenarios

1. Download the Sample Dynamic Inventory Script - python.
2. Modify it to talk to localhost.
3. Use it to pull ansible_distribution.
4. Use dynamic script to install httpd.
5. Check httpd has been installed.
6. Remove the httpd.
7. Check to ensure it's removed.

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