How do I correlate logs, metrics, and traces for Kubernetes basics?

// Example: Using OpenTelemetry to correlate logs, metrics, and traces in Kubernetes

// Load necessary libraries
use OpenTelemetry\Trace\TracerProvider;
use OpenTelemetry\Log\Logger;

$tracer = (new TracerProvider())->getTracer('my-tracer');
$logger = new Logger('my-logger');

// Create a span for a trace
$span = $tracer->startSpan('process-request');

try {
    // Log context-related information
    $logger->info("Processing request", ['span_id' => $span->getSpanContext()->getSpanId()]);

    // Simulate metric recording
    $metrics = [
        'request_time' => microtime(true) - $start_time,
        'success' => true,
    ];
    recordMetrics($metrics);

} catch (Exception $e) {
    $logger->error("Error processing request", ['error' => $e->getMessage()]);
    $span->setStatus('ERROR');
} finally {
    // End the span
    $span->end();
}