I wanted to apply puppet classes to a node using a script, I started looking at the foreman REST API but stumbled upon the foreman_api ruby. I specified hostgroups in foreman and added puppet classes to the hostgroups. The idea is that I want to be able to change the hostgroups using a script.
Running things through irb this is what I came up with for changing the hostgroups.
#!/usr/bin/ruby
require 'rubygems'
require 'foreman_api'
hostname='node1.example.com'
hosts = ForemanApi::Resources::Host.new(
{
:base_url => 'http://foreman.example.com',
:username => 'apiuser',
:password => 'PacktPub'
})
hosts.update({"id" => hostname, "host" => {"hostgroup_id"=>2}})
Hammer-cli looks a little more promising for this sort of programmed changing of foreman parameters. With hammer I was able to add arbitrary classes to a node.
$ hammer host update --name node1.example.com --puppetclass-ids 14,35
Host updated
$
With either method I need to know the id's of the hostgroups or the puppetclasses.
I can get those with either though, but I still need to work them out first.
$ hammer puppet_class list
-------------------------------
ID | NAME
-------------------------------
14 | example_one
35 | example_two
-------------------------------
$