![]() ![]() Scripts are defined in the Inventory Scripts section of Ansible Tower's web interface. To make the script fully compliant, you would need to implement logic to handle these options. ![]() Alternatively, Ansible provides the -host=NAME option when it needs the variables of a specific host, identified by its NAME. Note: The sample script is intentionally brief and omits a detail: Ansible invokes these scripts with the -list option if a list of hosts needs to be produced, as it does in our case. The output shows that Ansible correctly interpreted the information given in the hostvars section and used my username rdiscala to connect via SSH to the server hosts. # id: scripts/trivial-inventory-script.sh #Plugin galaxy into computer blank codeThe following Bash code is an inventory script that generates the output just shown: For instance, the following output provides the Ansible playbook with a list of hosts and related data: The script must return its data in JSON format. Inventory scripts are organized in a single executable file, written in a scripting language such as Python or Bash. There’s a good reason: Source code is properly managed in a version control system, where developers and operators can track and review changes to its corpus. Note: Inventory scripts are deprecated in Ansible Tower, so they will be removed in a future version. As you'll see, inventory plugins can accept parameters, which gives them an advantage over plain scripts. We'll start with a sample inventory script, then transform the script into a plugin. #Plugin galaxy into computer blank how toThis article shows you how to use Ansible Tower to create dynamic inventories. Enterprises typically manage assets in a configuration management database (CMDB), such as NetBox, which Ansible Tower connects to using a specially written script or plugin. Operators can log into the Ansible Tower web interface and create single jobs or complex workflows using Ansible Engine building blocks such as tasks, roles, and playbooks. Red Hat Ansible Tower, also known as AWX (the name of its upstream community project), is a front-end to Red Hat Ansible Engine that simplifies operations on large IT infrastructures. Dynamic inventories are generated on-demand using inventory scripts or inventory plugins, consisting of code that Ansible runs to get a list of hosts to target when executing playbooks. For example, a simple inventory file in INI format follows:Īnsible inventories can be static (stored in a file and managed in a source code repository) or dynamic (retrieved from an external web resource, such as through a RESTful API). Inventory files maintain lists of these hosts and are formatted as YAML or INI documents. Ansible organizes these tasks in playbook files, which run on one or more remote target hosts. Ansible is an engine and language for automating many different IT tasks, such as provisioning a physical device, creating a virtual machine, or configuring an application and its dependencies. ![]()
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