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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
Clock icon Intermediate
Duration
Clock icon 30m
Published
Clock icon Oct 18, 2019

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Table of Contents

  1. 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

  2. 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.

  3. 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.

  4. 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.

A Cloud Guru - Labs - Configure Ansible Managed Nodes
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!

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