create default pxe menus for each cluster host

pxe_creator.php

#!/usr/bin/php -q
<?php

// Report all errors except E_NOTICE
error_reporting(E_ALL & ~E_NOTICE);

function foreman_api($request) {

    $username = 'apiuser';
    $password = '##########';
    $server = 'puppet';

    $curl = curl_init();
    curl_setopt_array($curl, array(
        CURLOPT_RETURNTRANSFER => 1,
        CURLOPT_URL => "https://$server/api/v2/$request",
        CURLOPT_SSL_VERIFYPEER => false,
        CURLOPT_USERPWD => $username . ":" . $password,
    ));

    $response = curl_exec($curl);
    curl_close($curl);

    // put entire response into an array
    return json_decode($response, true);

}

function get_hosts($group, $verbose = false) {

    $hostgroup_hosts = foreman_api("hostgroups/$group/hosts");
    return $hostgroup_hosts['results'];
}

$storage = get_hosts(3,true);
$kvm_hosts = get_hosts(4,true);

$cluster = array_merge($storage,$kvm_hosts);


foreach ($cluster as $host) {

    $host_short = array_shift((explode(".",$host['name'])));
    $hostname = $host['name'];
    $mac = str_replace(':','-',$host['mac']);

    $pxe_template = "

    DEFAULT menu
    PROMPT 1
    MENU TITLE PXE Menu
    TIMEOUT 200
    TOTALTIMEOUT 6000
    ONTIMEOUT proxmox_iscsi

    LABEL proxmox_iscsi
        MENU LABEL Proxmox ISCSI Boot
    	KERNEL boot/iscsi-vmlinuz
    	APPEND initrd=boot/$host_short-iscsi-initrd.img BOOTIF=$mac INTERFACE=auto IP=dhcp HOSTNAME=$hostname ISCSI_INITIATOR=iqn.2015-012.gluster:storage:$host_short-client ISCSI_TARGET_NAME=iqn.2015-012.gluster:storage:$host_short ISCSI_USERNAME=####### ISCSI_PASSWORD=########## ISCSI_TARGET_IP=192.168.0.17 ISCSI_TARGET_PORT=3260 root=UUID=6251cd48-3299-4134-b3f5-da9fedeb78e0 rw

    LABEL proxmox_iscsi_single
    	MENU LABEL Proxmox ISCSI Boot - Single User Mode
        KERNEL boot/iscsi-vmlinuz
        APPEND initrd=boot/$host_short-iscsi-initrd.img BOOTIF=$mac INTERFACE=auto IP=dhcp HOSTNAME=$hostname ISCSI_INITIATOR=iqn.2015-012.gluster:storage:$host_short-client ISCSI_TARGET_NAME=iqn.2015-012.gluster:storage:$host_short ISCSI_USERNAME=######## ISCSI_PASSWORD=######## ISCSI_TARGET_IP=192.168.0.17 ISCSI_TARGET_PORT=3260 root=UUID=6251cd48-3299-4134-b3f5-da9fedeb78e0 rw init=/bin/bash
    ";

    $file = "/var/lib/lxc/puppet/rootfs/srv/tftp/pxelinux.cfg/01-$mac";

    file_put_contents($file, $pxe_template);

}