custom-prometheus-exporter/config.example.php

<?php

$config = [
    'cpu_usage' => [
        'help' => 'CPU usage percentage',
        'type' => 'gauge',
        'submetrics' => [
            [
                'command' => 'top -bn1 | grep "Cpu(s)" | sed "s/.*, *\([0-9.]*\)%* id.*/\1/" | awk \'{print 100 - $1}\'',
            ],
        ],
    ],
    'memory_usage' => [
        'help' => 'Memory usage percentage',
        'type' => 'gauge',
        'submetrics' => [
            [
                'command' => 'free | grep Mem | awk \'{print $3/$2 * 100.0}\'',
            ],
        ],
    ],
    'disk_usage' => [
        'help' => 'Disk usage percentage',
        'type' => 'gauge',
        'submetrics' => [
            [
                'command' => 'df -h / | grep / | awk \'{print $5}\' | sed \'s/%//g\'',
            ],
        ],
    ],
    'website_response_time' => [
        'help' => 'Response time of example.com in seconds',
        'type' => 'gauge',
        'submetrics' => [
            [
                'http' => [
                    'url' => 'http://example.com',
                    'data' => 'responsetime',
                ],
            ],
        ],
    ],
    'website_status' => [
        'help' => 'HTTP status code of example.com',
        'type' => 'gauge',
        'submetrics' => [
            [
                'http' => [
                    'url' => 'http://example.com',
                    'data' => 'hasresponse',
                    'statuscode' => [200],
                ],
            ],
        ],
    ],
    'http_request_count' => [
        'help' => 'Number of HTTP requests to example.com',
        'type' => 'counter',
        'submetrics' => [
            [
                'http' => [
                    'url' => 'http://example.com',
                    'data' => 'hasresponse',
                ],
            ],
        ],
    ],
    'proxied_request' => [
        'help' => 'Response time of example.com via proxy in seconds',
        'type' => 'gauge',
        'submetrics' => [
            [
                'http' => [
                    'url' => 'http://example.com',
                    'data' => 'responsetime',
                    'proxy' => 'http://your-proxy-server:8080',
                ],
            ],
        ],
    ],
    'json_data_metric' => [
        'help' => 'Value from JSON response of example.com',
        'type' => 'gauge',
        'submetrics' => [
            [
                'http' => [
                    'url' => 'http://example.com/api/data',
                    'data' => 'responsebody',
                ],
                'jsonelem' => 'path.to.value',  // Adjust the JSON path to the actual structure
            ],
        ],
    ],
];