ansible-dynamic-inventory

A dynamic inventory for ansible based on the LibreNMS API.

The script can be used directly by ansible as a dynamically generated inventory.

It creates the basic ansible inventory structure based on the LibreNMS device information.

Using the script with ansible

The inventory is used by ansible with -i ./ansible-dynamic-inventory.py:

$ ansible -i ./ansible-dynamic-inventory.py dsw* --list
  hosts (4):
    dsw1-site1.corp.example
    dsw2-site1.corp.example
    dsw1-site2.corp.example
    dsw2-site2.corp.example

Calling the script directly

As per ansible requirements, the script takes either --list or --host <hostname> as options and returns either a full ansible inventory or only details for a specific host.

Get the details for a single host with --host <hostname>:

$ ./ansible-dynamic-inventory.py --host dsw1-site1.corp.example|json_pp
{
   "sysname" : "dsw1-site1",
   "location" : "site1",
   "type" : "network",
   "hardware" : "J8697A Switch 5406zl",
   "ansible_network_os" : "procurve"
}

Get the full ansible inventory with --list:

$ ./ansible-dynamic-inventory.py --list|json_pp
{
   "_meta" : {
      "hostvars" : {
         "dsw1-site1.corp.example" : {
            "location" : "site1",
            "sysname" : "dsw1-site1",
            "type" : "network",
            "hardware" : "J8697A Switch 5406zl",
            "ansible_network_os" : "procurve"
         },
         "dsw2-site1.corp.example" : {
            "location" : "site1",
            "sysname" : "dsw2-site1",
            "type" : "network",
            "hardware" : "J8697A Switch 5406zl",
            "ansible_network_os" : "procurve"
         },
         "asw1-site1.corp.example" : {
            "ansible_network_os" : "procurve",
            "hardware" : "J9574A 3800-48G-PoE+-4SFP+ Switch",
            "type" : "network",
            "location" : "site1",
            "sysname" : "asw1-site1"
         },

[..]