ggiamarchi / pxe-pilot

API and CLI to manage PXE configurations

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PXE Pilot

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PXE Pilot helps you to manage PXE configurations for your hosts through a simple API. His role is very simple, it allows you to:

  • Know which configuration is associated with each host
  • To switch from a configuration to another one for a specific host

The REST API can be called either directly or using the CLI.

Why this software ?

Some other software like Foreman or Cobbler can be used to manage PXE configurations in a more sofisticated way. For small deployments where only very basics features are needed, installing such a solution can appear overkill. In this situation, PXE Pilot could be what you need.

See also the use case that leads me to create this project.

How does it work ?

PXE pilot knows your hosts (with their MAC addresses) and your PXE configurations (see the "configuration" section)

It's important to understand that PXE Pilot does not help you to write PXE configurations. PXE Pilot basically manages symlinks at the filesystem level to ensure each host uses the right configuration.

When a host have several MAC addresses, the first address in the list points to the desired configuration and all the others point to the first one. This is to ensure the host will boot on the right configuration whatever the network interface is used to boot.

Prerequisites

Using PXE Pilot suppose you already have a PXE server (DHCP + TFTP) up and running. PXE Pilot is DHCP and TFTP agnostic. It only work at the filesystem level into the TFTP root directory.

Running PXE Pilot

Configuration

PXE Pilot needs to know three things:

  • The host list to manage
  • The absolute path to the TFTP root
  • The directory containing PXE configurations

All those information are described in the YAML file /etc/pxe-pilot/pxe-pilot.yml.

Optionnaly, IPMI MAC address (or IP address) and credentials can be specified. When IPMI is available, PXE Pilot client shows power state for each host.

Example:

---

hosts:
  - name: h1
    mac_addresses: ["00:00:00:00:00:01"]
  - name: h2
    mac_addresses: ["00:00:00:00:00:02"]
    ipmi:
      mac_address: "00:00:00:00:00:a2"
      username: "user"
      password: "pass"
      interface: "lanplus"
      subnets: "10.0.0.0/24"
  - name: h3
    mac_addresses: ["00:00:00:00:00:03", "00:00:00:00:00:33"]

tftp:
  root: "/var/tftp"

configuration:
  directory: /var/tftp/pxelinux.cfg/conf

server:
  port: 3478

Running PXE Pilot server

Basically run

$ pxe-pilot server

Querying PXE Pilot using the CLI

$ pxe-pilot --help

Usage: pxe-pilot [OPTIONS] COMMAND [arg...]

PXE Pilot

Options:
  -s, --server="http://localhost:3478"   Server URL for PXE Pilot client
  -d, --debug=false                      Show client logs on stdout

Commands:
  server       Run PXE Pilot server
  config       PXE configuration commands
  host         Host commands

Run 'pxe-pilot COMMAND --help' for more information on a command.

Th following examples assume PXE Pilot server is listening on localhost:3478. If not, use the --server option to address your PXE Pilot server.

List available configurations

$ pxe-pilot config list

+--------------+
|     NAME     |
+--------------+
| local        |
| ubuntu-14.04 |
| ubuntu-16.04 |
+--------------+

List hosts

$ pxe-pilot host list

+------+---------------+---------------------------------------+-------------------+-----------+-------------+
| NAME | CONFIGURATION |             MAC ADDRESSES             |    IPMI MAC       | IPMI HOST | POWER STATE |
+------+---------------+---------------------------------------+-------------------+-----------+-------------+
| h1   | local         | 00:00:00:00:00:01                     |                   |           |             |
| h2   |               | 00:00:00:00:00:02                     | 00:00:00:00:00:a2 | 1.2.3.4   | On          |
| h3   | local         | 00:00:00:00:00:03 | 00:00:00:00:00:33 |                   |           |             |
+------+---------------+---------------------------------------+-------------------+-----------+-------------+

Deploy configuration for host(s)

Deploy ubuntu-16.04 configuration for hosts h2and h3.

$ pxe-pilot config deploy ubuntu-16.04 h2 h3

+------+---------------+
| NAME | CONFIGURATION |
+------+---------------+
| h2   | ubuntu-16.04  |
| h3   | ubuntu-16.04  |
+------+---------------+

API Documentation

Read configurations

GET /v1/configurations
Response
{
    "configurations": [
        {
            "name": "ubuntu-16.04"
        },
        {
            "name": "local"
        },
        {
            "name": "grml-2017.05"
        }
    ]
}
Response codes
Code Name Description
20O Ok Server configurations have been retrieved

Show configurations

GET /v1/configurations/<name>
Response
{
  "name": "local",
  "content": "default local\n\nlabel local\n    localboot 0\n"
}
Response codes
Code Name Description
20O Ok Configuration detail have been retrieved

Read hosts

GET /v1/hosts
Response
[
    {
        "name": "h1",
        "macAddresses": [
            "00:00:00:00:00:01"
        ],
        "configuration": null
    },
    {
        "name": "h2",
        "macAddresses": [
            "00:00:00:00:00:02"
        ],
        "configuration": {
            "name": "ubuntu-16.04"
        }
    },
    {
        "name": "h3",
        "macAddresses": [
            "00:00:00:00:00:03",
            "00:00:00:00:00:33"
        ],
        "configuration": {
            "name": "local"
        }
    }
]
Response codes
Code Name Description
20O Ok Host list had been retrieved

Reboot a host

PATCH /v1/hosts/<name>/reboot
Response codes
Code Name Description
204 No Content Host had been successfully rebooted
404 Not Found Host does not exist
409 Conflict Reboot did not succeed for any reason

Deploy a configuration for host(s)

PUT /v1/configurations/<configuration_name>/deploy
Body
{
    "hosts": [
        {
            "name": "h1"
        },
        {
            "name": "h2"
        },
        {
            "mac_address": "83:06:0a:00:cf:03"
        }
    ]
}
Error response (code 4xx)
{
    "message": "Configuration not found"
}
Parameters
Name In Type Required Description
hosts body Host[] Yes Hosts for whom to deploy configuration
Host (object)
Attribute Type Required Description
name string No Host name
mac_address string No Host MAC address
reboot bool No Whether the host should be rebooted automatically or not
Response codes
Code Name Description
204 No Content Configurations had been deployed
404 Not found Either the configuation or a host is not found
400 Bad request Malformed body

Refresh hosts information

This API populate the ARP table for all subnets in the PXE Pilot configuration

PATCH /v1/refresh
Response codes
Code Name Description
204 No Content Refresh operation completed without any issue

License

Everything in this repository is published under the MIT license.

About

API and CLI to manage PXE configurations

License:MIT License


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