If you’ve got many hosts to manage, it’s time to automate configuration management by installing Ansible! Ansible is the most popular automation tool to manage configuration changes across your on-prem and cloud resources.
In this article, you’re going to learn from the ground up how to download and install an Ansible controller host on Ubuntu, RHEL, and macOS. You’ll also get a jump start on running your first commands!
This tutorial will use v2.9.20 of Ansible but the process to set up Ansible on a controller host should be near identical for later versions.
Let’s get started!
Installing Ansible on Ubuntu
You can install Ansible on any *nix-based operating system. One of the most popular choices out there is Ubuntu. Let’s kick off this tutorial and go through a walkthrough on how to make it happen.
If you’d like to set up Ansible on Ubuntu, this section is going to assume you have an Ubuntu 18+ machine with Python2 or higher installed. This tutorial will be using Ubuntu 18.04.5 LTS with Python3.
1. Connect to your soon-to-be Ansible controller on an Ubuntu host with your favorite SSH client.
2. Ansible is stored as a package that can be downloaded and installed via the apt package manager. To ensure apt can find the proper source and download any dependent packages run apt update
.
The apt or apt-get command installs the packages from apt software repositories configured in Ubuntu.
3. Continue preparing apt to download and install Ansible by installing the software-properties-common
package. sudo apt install software-properties-common

4. Next, add the ansible/ansible
personal package archive (PPA) as an apt repository. This repository is managed by Red Hat, not by Ubuntu sources, so you must add it manually.

5. Now, install the ansible package by running the apt install
command
6. When complete, confirm Ansible is installed by running the ansible --version
command. If all is well ansible --version

Installing Ansible on RHEL
Ubuntu isn’t the only operating system Ansible supports. Red Hat Enterprise Linux (RHEL) or CentOS are also common options. Let’s start with RHEL.
If you plan to follow this section, ensure you have an RHEL release 8+ host (this tutorial will use RHEL 8.3 (Ootpa).
1. Connect to your RHEL host via SSH with your favorite SSH client.
2. Install the python3-pip
and python3
package with dnf. Ansible works with Python2, but this tutorial will be using Python3 because Python2 is soon to be considered legacy.

3. Install the Extra Packages for Enterprise Linux (EPEL) repository. The EPEL repository contains various system packages including the Ansible package which you will install in the next step.

4. Once you’ve installed the repository, install the Ansible package by referencing the required EPEL repository and the package’s name (ansible
). The dnf utility will automatically download the latest version of Ansible.
5. Now, check to ensure Ansible has been installed successfully by running

Installing Ansible on CentOS
Rounding out the *nix hosts, let’s end with setting up Ansible on CentOS.
If you plan to follow this section, ensure you have a CentOS 7+ host with Python2 or higher installed (this tutorial will use CentOS 7.9.2009 Core).
1. Connect to your CentOS host via SSH with your favorite SSH client.
2. Install the Extra Packages for Enterprise Linux (EPEL) repository. The EPEL repository contains various system packages, including the Ansible package, which you will install in the next step.
The yum command installs and manages software by using the official Red Hat software repositories, as well as other third-party repositories.

3. Once the repository is complete, install the Ansible package.

4. Now, confirm Ansible is installed by running ansible --version
.

Installing Ansible on macOS
So far, you have learned how to set up Ansible on various Linux distros. Let’s finish out this tutorial by learning how to install Ansible on a Mac.
This section of the tutorial will focus on the popular macOS package manager called Homebrew. Homebrew is the easiest way to install Ansible on macOS. This tutorial will be using Homebrew v3.0.7 on macOS Catalina.
If you’d like to learn how to install Ansible via the popular Python package manager pip, check out the Ansible pip package.
To install on macOS:
- Open up the Apple Terminal.
- Run the following command to invoke Homebrew to download and install Ansible on your Mac.
- Once complete, verify Ansible is installed by running
ansible --version
.
Testing Out Ansible by Running Ad-Hoc Commands
Now that Ansible is installed, it’s not doing much good unless you actually use it! One of the easiest ways to get started with Ansible is to learn about ad hoc commands. Ad hoc commands are one-off usually single-line commands that the Ansible invokes on remote computers (or on the Ansible host in this example).
Run an ad-hoc command on your operating system of choice by using the -m
switch. The -m
switch specifies an Ansible module that contains various functionality.
One of the simplest Ansible modules is the ping module. This module tests connectivity between the Ansible controller and a host. If you don’t have any remote hosts available, provide the name of the Ansible controller itself (localhost
) to run the ping module against.
If successful, you should see green output indicating success!

Conclusion
In this tutorial, you learned how to set up the most widely used automation tool, Ansible, on Ubuntu, RHEL, CentOS, and macOS.
Now that you have a new Ansible controller host set up, what do you plan to manage with it?