Ansible Dynamic Inventory

Allows you to generate inventory (host and group information) dynamically rather than statically defining it in a static inventory file

Dynamic Inventory

Ansible dynamic inventory is a feature in Ansible that allows you to generate inventory (host and group information) dynamically rather than statically defining it in a static inventory file. This dynamic approach is particularly useful in dynamic and cloud-based environments where the number and state of hosts can change frequently.

Inventory Sources: Ansible dynamic inventory sources are scripts or plugins that generate inventory data dynamically. These sources can fetch information from various sources like cloud providers, databases, or external systems.

Available sources:

  • AWS EC2: You can use the script provided by Ansible to dynamically fetch EC2 instances from your AWS account.
  • OpenStack: There’s an script for dynamic inventory in OpenStack environments.
  • Custom Plugins: You can write custom dynamic inventory plugins to fetch inventory data from your specific environment or system.

Dynamic Generation: When you run Ansible commands or playbooks, Ansible executes the inventory source(s) to gather the current host and group information. This information is generated on the fly based on the current state of your infrastructure.

Flexible Configuration: Ansible allows you to configure dynamic inventory sources in your Ansible configuration files (ansible.cfg) or specify them on the command line using the -i option.

Benefits of using dynamic inventory in Ansible

  • Scalability: Easily adapt to changing infrastructure sizes and configurations.
  • Automation: Automate the process of updating your inventory as your infrastructure changes.
  • Consistency: Ensure your inventory is always up to date without manual intervention.
  • Integration: Seamlessly integrate with cloud providers and other external systems.

Dynamic inventory in Ansible is a powerful feature for managing infrastructure in dynamic and cloud-native environments, making it easier to automate configuration management and orchestration tasks.

Table of Contents
Primary Item (H2)Sub Item 1 (H3)Sub Item 2 (H4)
Sub Item 3 (H5)
Sub Item 4 (H6)

Related Cloud Tutorials

Ansible Multiple Environment Best Practices
Ansible Multiple Environment Handling multiple infrastructure environments with Ansible is easily done by targeting the environment tag that is included in the mandatory AWS Tags. See AWS Tagging Best Practices. Avoid mixing environments mistakes Have switches, configurations redundancies and different keys for each environment to reduce the possibility of applying changes to the wrong client […]
Ansible Roles Best Practices
Ansible Roles Granularity We recommend building Ansible roles that are highly reusable by configuration, but we also recommend pragmatism as our highest priority. Roles for systems and applications designed to be standalone, or before the Cloud was around, are called “non-native cloud applications”, often those are stateful applications that can not be clustered without sharing […]
Ansible Playbook Structure Best Practices
Define and apply a company-wide consistent structure for all your Ansible Playbooks that allows for easy understanding and maximum reutilization
AWS Terraform module
Infrastructure as Code IaC is an approach to managing and provisioning computing infrastructure through machine-readable code and automation, rather than manual processes. In IaC, infrastructure is defined, configured, and managed using code, which can be version-controlled and treated like any other software application. IaC involves: IaC provides several benefits, including improved efficiency, reduced manual errors, […]
LAN, NAT, HOST Only and Tunnel Kubernetes networks
Kubernetes Cluster using Vagrant and Ansible with Containerd (in 3 minutes)
Tutorial and full source code explaining how to create a Kubernetes cluster with Ansible and Vagrant for local development under 3 minutes.
How to use Ansible and Terraform together
This Ansible AWS tutorial shows how to use Ansible and its dynamic inventory to provision the software and configuration of infrastructure that has been created with Terraform.
AWS Public and Private Network in a VPC
AWS VPC, Route 53, RDS MariaDB, EC2 using Ansible and Terraform (1/5)
Tutorial and source code explaining how to provision and configure a VPC, Route 53, RDS MariaDB, Instances and security groups using Ansible and Terraform on AWS to run WordPress in an Ubuntu server with Nginx, PHP, and Let’s Encrypt.

Javier Ruiz

IT Wonder Lab tutorials are based on the rich and diverse experience of Javier Ruiz, who founded and bootstrapped a SaaS company in the energy sector. His company, which was later acquired by a NASDAQ traded company, managed over €2 billion per year of electricity for prominent energy producers across Europe and America. Javier has more than 20 years of experience in building and managing IT companies, developing cloud infrastructure, leading cross-functional teams, and transitioning his own company from on-premises, consulting, and custom software development to a successful SaaS model that scaled globally.

One comment on “Ansible Dynamic Inventory”

Leave a Reply

Your email address will not be published. Required fields are marked *

linkedin facebook pinterest youtube rss twitter instagram facebook-blank rss-blank linkedin-blank pinterest youtube twitter instagram