Ansible inventory manager check inventory for error in python

When working with Ansible, it is important to have a reliable inventory manager to keep track of your hosts and groups. In Python, you can easily check your Ansible inventory for errors using different approaches. Let’s explore three different solutions to this problem.

Solution 1: Using the Ansible API

The Ansible API provides a powerful way to interact with Ansible programmatically. We can leverage this API to check the inventory for errors in Python. Here’s how:


import ansible.inventory

def check_inventory():
    inventory = ansible.inventory.Inventory()
    try:
        inventory.parse_sources()
        return "Inventory is error-free."
    except ansible.errors.AnsibleError as e:
        return f"Error in inventory: {str(e)}"

In this solution, we create an instance of the Ansible inventory and parse its sources. If any errors occur during the parsing process, an AnsibleError exception is raised, indicating an error in the inventory. Otherwise, we return a success message.

Solution 2: Using YAML Parsing

Another approach to check the Ansible inventory for errors is by parsing the inventory file directly using YAML. Here’s an example:


import yaml

def check_inventory():
    with open('inventory.yml', 'r') as file:
        try:
            inventory = yaml.safe_load(file)
            return "Inventory is error-free."
        except yaml.YAMLError as e:
            return f"Error in inventory: {str(e)}"

In this solution, we open the inventory file using the ‘open’ function and parse its contents using the ‘safe_load’ method from the YAML module. If any YAML parsing errors occur, a YAMLError exception is raised, indicating an error in the inventory.

Solution 3: Using Regular Expressions

If you prefer a more manual approach, you can use regular expressions to check the inventory file for errors. Here’s an example:


import re

def check_inventory():
    with open('inventory.txt', 'r') as file:
        content = file.read()
        if re.search(r'[.*]', content):
            return "Inventory is error-free."
        else:
            return "Error in inventory: No valid groups found."

In this solution, we read the inventory file and use a regular expression to search for valid group patterns. If any valid groups are found, we assume the inventory is error-free. Otherwise, we return an error message.

After exploring these three solutions, it is clear that Solution 1, using the Ansible API, is the most robust and reliable option. It directly interacts with the Ansible inventory and handles any errors that may occur during parsing. However, if you prefer a simpler approach, Solution 2 using YAML parsing is also a good choice. Solution 3 using regular expressions is the least recommended option as it relies on specific patterns and may not cover all possible errors in the inventory.

Rate this post

5 Responses

    1. Ive used YAML parsing countless times and its definitely the way to go! It simplifies the whole process and keeps things organized. Give it a shot, you wont regret it!

    1. Solution 2 may require a little more effort, but its worth it! Dont be afraid to step out of your comfort zone. Embrace the challenge and discover new possibilities. You might be surprised at the amazing results you can achieve. Give it a try!

Leave a Reply

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

Table of Contents