satinv

satinv - Satellite Inventory

This program will generate an Ansible Dynamic Inventory using Red Hat Satellite as a source. The Dynamic Inventory will consist of a number of inventory groups:-

• Host Collections - Within Red Hat Satellite, hosts can be assigned to one or more Host Collections.
• Valid Hosts - In this context a host is valid if it has:
  • an OS installed (that Satellite recognises)
  • a valid Red Hat subscription
  • been seen within an acceptable period of time - 7 days default (config option: sat_valid_days)
• CIDR groups - Groups created based on the subnet the host resides in

Installation

• Grab a copy of Google's Go and follow the instructions for your platform to install it.
• Download the satinv repository and compile it.
• Copy the resulting binary to somewhere sane (on Linux, /usr/local/bin is probably a good choice).
• Try executing satinv --help to check you don't have any runtime errors.

Configuration

The configuration for satinv lives in a single YAML formatted file. The file can be located anywhere but the default is /etc/ansible/satinv.yml. The location can be overridden with --config=/path/to/config.yml or by setting the environment variable SATINVCFG. Note: You cannot use the --config option when running satinv from ansible-playbook or ansible-inventory. This is a constraint imposed by Ansible.

Options Overview

api

The api section is concerned with accessing the Red Hat Satellite API

• baseurl: URL of the Red Hat Satellite instance.
• certfile: Path to a root certificate file. Probably only required if the above URL is self-signed.
• user: Username that provides access to the API. Ideally this should be a low privilege, read-only user.
• password: password for the above user

cache

The cache sections deals with how frequently the inventory components should be refreshed

• dir: Directory where the cache files will be stored.
• validity: How long (in seconds) the Satellite API results in the cache are considered valid. Default: 28800
• inventory_validity: How long (in seconds) the dynamic inventory file is considered valid. Default: 7200

Note: inventory_validity should always be less than validity.

cidrs

The cidrs section contains a dictionary keyed by inventory_groupname and containing the CIDR of hosts that will occupy that group.

valid

The valid section contains settings relating to the special valid group.

• days: A host must have reported into Satellite within this number of days to be considered valid.
• exclude_hosts: A list of hostnames that should be excluded
• exclude_regex: A list of Regular Expressions. A hostname matching any of these will be excluded.

Example Configuration

---
api:
  baseurl: https://www.redhat.mydomain.com
  user: myreadonlyuser
  password: myPassword

cache:
  dir: ~/satinv/cache
  validity: 28800

target_filename: ~/satinv/inventory.json

cidrs:
  dev: 192.168.0.0/24
  test: 192.168.1.0/24
  prod: 192.168.100.0/23

valid:
  days: 5
  exclude_hosts:
    - badhostname
    - dontansibleme
  exclude_regex:
    - ^test
    - test[0-9][0-9]$

Test the configuration by running satinv --debug (assuming your config path is predefined).

Usage

To use the dynamic inventory consider the following commands:

• ansible-inventory -i /usr/local/bin/satinv --list
• ansible-playbook -i /usr/local/bin/satinv my_playbook.yml