FreeKB - Ansible Install Ansible on Linux using pip
Ansible - Install Ansible on Linux using pip

This article describes how to install Ansible but not Ansible Tower. Refer to Install Ansible Tower on Linux if you also want Tower.

The system that Ansible is installed on is known as the control node. Windows is not supported for the control node. Instead, Ansible must be installed on a Linux distribution.


Python

The control node must have Python version 2.7 or higher or Python version 3.5 or higher installed. The python --version command can be used to determine if Python is installed and the version that is installed. If Python is not installed, the installation of Ansible will also install Python.

~]$ python --version
Python 3.6.8

 


EPEL (Extra Packages for Enterprise Linux)

On a Red Hat distribution, PIP is in the EPEL(Extra Packages for Enterprise Linux) repository, thus epel-release must be installed.

yum install epel-release

 


Install

On a Red Hat distribution, the yum install ansible command can be used to install Ansible. However, be aware that this will setup Ansible to use Python version 2.7.5. Python 2.7 reached it's end of life support in January of 2020. For this reason, it is preferrable to use PIP to install Ansible. The pip --version can be used to determine if PIP is installed. If PIP is installed, something like this should be displayed. If PIP is not installed, refer to Installing PIP on Linux CentOS.

pip --version

pip 9.0.3 from /usr/lib/python3.6/site-packages (python 3.6)

 

The hash command caches the paths to commands, and if a command is relocated then bash will not pick it up unless that cache is cleared. Issue the following command to clear Ansible from the cache.

hash -d ansible

 

You may also want to purge the pip cache to avoid used cached files.

pip3 cache purge

 

Something like this should be returned.

Files removed: 2

 

If the wheel package is not installed, something like this will be returned. Ansible will still be installed.

Using legacy 'setup.py install' for ansible, since package 'wheel' is not installed.

 

However, so as to avoid using legacy setup.py, let's first install the wheel package.

pip3 install wheel

 

Use PIP to install the latest stable version of Ansible.

pip install ansible-base
pip install ansible

 

Or, a specific version of ansible can be installed.

pip install ansible=3.2.0

 

Also installed the packaging package, which is used by ansible base.

pip install packaging

 

This is required, because if the packaging package is not installed, something like this will probably get returned when using the ansible-playbook command.

ERROR! Unexpected Exception, this is probably a bug: The 'packaging' distribution was not found and is required by ansible-base

 

The pip show command can be used to ensure that Ansible was installed.

pip3 show ansible-base

 

In this example, ansible-base version 2.10.6 is installed.

Name: ansible-base
Version: 2.10.6
Summary: Radically simple IT automation
Home-page: https://ansible.com/
Author: Ansible, Inc.
Author-email: info@ansible.com
License: GPLv3+
Location: /usr/local/lib/python3.6/site-packages
Requires: packaging, jinja2, PyYAML, cryptography
Required-by: ansible

 

And version 3.0.0 of ansible is installed.

Name: ansible
Version: 3.0.0
Summary: Radically simple IT automation
Home-page: https://ansible.com/
Author: Ansible, Inc.
Author-email: info@ansible.com
License: GPLv3+
Location: /usr/local/lib/python3.6/site-packages
Requires: jinja2, PyYAML, cryptography

 

Note that if you include the --user flag when installing Ansible (pip install --user ansible), then the location of Ansible will be something like this.

Location: /root/.local/lib/python3.6/site-packages


Note that Ansible does not create a daemon, thus the systemctl command will not be used. Instead, Ansible uses SSH to manage remote systems (or a different networking protocol could be used). When installing Ansible using pip (or from source), the config file should return None. In this scenario, refer to Ansible - Configuration file.

ansible 2.9.12
  config file = None
  configured module search path = ['/home/jeremy.canfield/.ansible/plugins/modules', '/usr/share/ansible/plugins/modules']
  ansible python module location = /usr/local/lib/python3.6/site-packages/ansible
  executable location = /usr/local/bin/ansible
  python version = 3.6.8 (default, Apr  2 2020, 13:34:55) [GCC 4.8.5 20150623 (Red Hat 4.8.5-39)]

 

Notice in this example that the python version is 3.6. Let's say the python --version command returns version 2 of Python. This can be problematic. In this scneario, you'll most probably want to configure the python command to use version 3 of python.

python --version

Python 2.7.5

 



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