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Following is basic setup and configuration.
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Install Ansible
The simplest way to install Ansible is to use yum on a RHEL/CentOS server. This will typically get you version 2.1 or 2.3 of Ansible, which not the latest version (2.9, at time of writing) but would be usable for most operations.
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In production, always configure an Ansible user per system that you plan to pull under orchestration and use that Ansible user when making changes. |
Set up password-less authentication
Digital Ocean has a good walk-through on key-based auth: How To Configure SSH Key-Based Authentication on a Linux Server
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Once the password-less auth is setup, the next step is to go back to Ansible configuration.
Configure Ansible Host/Inventory files
The Ansible hosts file is a list of IP addresses or hostnames in groups that can be used to run commands against. This can be in INI or YAML (.ini or .yaml) format.
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In the example above, the IP addresses could be replaced with host names as long as the Ansible host can resolve the host.
Run an Ansible command
There are a few different ways that you can use Ansible commands.
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