Practitioner Level

Configure Ansible Managed Nodes

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30 minutes

4 Learning Objectives

About this Hands-on Lab

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.

Learning Objectives

Successfully complete this lab by achieving the following learning objectives:

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

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.

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.

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.

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Additional Resources

Notice: Ansible is installed as the root user, so please work on all tasks after elevating to the root user.

We're in the midst of a proof of concept project. We have gotten approval for the combination of inventories and facts, software management, modules, playbooks, and variables in a single-server environment. Now we can move on to configuring this in a multi-server setup. We've been given three servers, and some tasks to set up for each: WebServer1, DBServer1, and AdminServer1.

We've got to set the three servers up so that Ansible can connect and run commands as root without entering a password.

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No account setup or cloud bills

Offer applies only to: new personal and business paying customers, existing personal and business customers who switch to an annual paid plan, and any additional annual plan licenses purchased by existing business customers. Offer valid for a limited time only, beginning 10:00AM CT on February 19, 2021. Offer may not be combined with other offers. Purchases are subject to applicable Terms of Use or Master Services Agreement.

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Learn from anywhere with unlimited access to certification courses and deep dives on AWS, Azure, GCP, Linux, and so much more.

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Quickly check your knowledge on a variety of topics and know where to brush up with short quizzes.

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Keep up with the cloud

Stay up-to-date on all things cloud with weekly and monthly videos about the latest developments in AWS, Azure, GCP, and Kubernetes.

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Cloud with friends

Get the help you need, when you need it, from industry experts and other learners in the community — and help others in turn.

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Go from novice to guru in your chose specialty

Not sure how to proceed? We’ll guide you through the exact skills you need to gain to progress from novice to guru across a variety of cloud specialties, including Architect, Security, and DevOps.

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Keep ACG in your pocket

Learn cloud from anywhere with our mobile apps for iOS and Android.

Mobile Offline Mode

Learn off the grid

No internet connection? No problem. Download courses for offline access with our app for iOS and Android.

Unlimited Hands-on Labs

Get your hands cloudy

Learn by doing with guided labs based on real-world scenarios in a secure, risk-free environment. Build new skills in as little as 15 minutes.

Practice Exams

Put your skills to the test

Prepare for your certs with practice exams that mimic the real thing. Plus, get personalized pointers on how to improve your score.

Interactive Diagrams

Study aids on demand

Snag clickable, PDF versions of core concepts to revisit later. Our diagrams make great study aids, help build retention, and can act as handy cheat sheets for a quick refresher down the road.

Video Transcripts & Captions

For the record

Read along when sound isn’t an option and skip furiously scribbling notes. Our transcripts and captions are also fully searchable, making it easy to find exactly what you’re looking for.

Records of Completion

Achievement unlocked

Earn a little something when you complete courses. Records of completion make it easy to mark and showcase your progress.

Email Support

Cloud on demand

Spin up pre-configured, auto-provisioned servers in just a few clicks. Cloud along with courses, practice whenever you feel like it, and never worry about a surprise cloud bill.

Cloud Playground - Instant Terminal

SSH on demand

Quickly launch a secure, in-browser SSH terminal into any instance on any provider – even behind a firewall.

Cloud Playground - Sandboxes

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Learn by doing with Cloud Playground. Try out new cloud skills in live AWS, Azure, and GCP sandbox environments — without racking up a surprise bill. Cloud along with courses, test an idea at work or prepare for exams.

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Configure Ansible Managed Nodes

About this Hands-on Lab

Learning Objectives

Additional Resources

Plans & Pricing

Choosing is the first step

Business Basic

Business Plus

Learning without limits

Learn faster by doing

Take your teams from novice to guru

Cloud on demand

SSH on demand

Learn by doing

Keep up with the cloud

Put skills to the test

Pop quiz, hot shot

Cloud with friends

Keep ACG in your pocket

Learn off the grid

Achievement unlocked

For the record

Study aids on demand

We’re here to help

One dashboard to rule them all

Know where you stand

Get to the cloud faster

Learn better together

Skills at a glance

Easy organization by teams

Invite 10 to 10,000 or more

Connect all the dots

Get your bits

We’ve got your back

We’ll show you the ropes

Plans & Pricing

Choosing is the first step

Free

Personal Basic

Personal Plus

Learn without limits

Pop quiz, hot shot

Keep up with the cloud

Cloud with friends

Go from novice to guru in your chose specialty

Keep ACG in your pocket

Learn off the grid

Get your hands cloudy

Put your skills to the test

Study aids on demand

For the record

Achievement unlocked

We’re here to help

Cloud on demand

SSH on demand

Learn by doing

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