Ansible MCP Server

<?php /** * Health check script for LAMP stack * {{ ansible_managed }} * This file is managed by Ansible - local changes will be overwritten */ // Set content type to JSON header('Content-Type: application/json'); // Initialize response array $response = [ 'status' => 'healthy', 'timestamp' => date('Y-m-d H:i:s'), 'hostname' => gethostname(), 'ip' => $_SERVER['SERVER_ADDR'] ?? '127.0.0.1', 'checks' => [] ]; // Check PHP version $response['checks']['php'] = [ 'status' => 'ok', 'version' => phpversion() ]; // Check Apache $response['checks']['web_server'] = [ 'status' => 'ok', 'server' => $_SERVER['SERVER_SOFTWARE'] ?? 'unknown' ]; // Check disk space $disk_free = disk_free_space('/'); $disk_total = disk_total_space('/'); $disk_used_percent = 100 - round(($disk_free / $disk_total) * 100); $response['checks']['disk'] = [ 'status' => ($disk_used_percent < 90) ? 'ok' : 'warning', 'free' => formatBytes($disk_free), 'total' => formatBytes($disk_total), 'used_percent' => $disk_used_percent . '%' ]; // Check memory $mem_info = getSystemMemInfo(); $response['checks']['memory'] = [ 'status' => ($mem_info['used_percent'] < 90) ? 'ok' : 'warning', 'free' => formatBytes($mem_info['free']), 'total' => formatBytes($mem_info['total']), 'used_percent' => $mem_info['used_percent'] . '%' ]; // Check database connection try { $db_config = [ 'host' => '{{ db_host }}', 'name' => '{{ db_name }}', 'user' => '{{ db_user }}', 'pass' => '{{ db_password }}' ]; $dsn = "mysql:host={$db_config['host']};dbname={$db_config['name']}"; $options = [ PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION, PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC, PDO::ATTR_TIMEOUT => 5 ]; $pdo = new PDO($dsn, $db_config['user'], $db_config['pass'], $options); $stmt = $pdo->query('SELECT 1'); $response['checks']['database'] = [ 'status' => 'ok', 'connection' => 'successful', 'host' => $db_config['host'], 'name' => $db_config['name'] ]; } catch (PDOException $e) { $response['status'] = 'degraded'; $response['checks']['database'] = [ 'status' => 'error', 'connection' => 'failed', 'message' => 'Database connection error', 'host' => $db_config['host'], 'name' => $db_config['name'] ]; } // Check EFS mount {% if efs_enabled | default(true) | bool %} $efs_path = '{{ efs_mount_point }}'; if (file_exists($efs_path) && is_readable($efs_path) && is_writable($efs_path)) { $response['checks']['efs'] = [ 'status' => 'ok', 'path' => $efs_path, 'access' => 'read/write' ]; // Test write to EFS $test_file = $efs_path . '/health-check-' . gethostname() . '.txt'; $write_test = @file_put_contents($test_file, 'Health check: ' . date('Y-m-d H:i:s')); if ($write_test === false) { $response['status'] = 'degraded'; $response['checks']['efs']['status'] = 'warning'; $response['checks']['efs']['write_test'] = 'failed'; } else { $response['checks']['efs']['write_test'] = 'passed'; // Clean up test file @unlink($test_file); } } else { $response['status'] = 'degraded'; $response['checks']['efs'] = [ 'status' => 'error', 'path' => $efs_path, 'access' => 'unavailable' ]; } {% endif %} // Check for required PHP extensions $required_extensions = ['pdo_mysql', 'json', 'curl', 'mbstring', 'xml']; $missing_extensions = []; foreach ($required_extensions as $ext) { if (!extension_loaded($ext)) { $missing_extensions[] = $ext; } } $response['checks']['php_extensions'] = [ 'status' => empty($missing_extensions) ? 'ok' : 'warning', 'loaded' => get_loaded_extensions(), 'missing' => $missing_extensions ]; // Check for writable directories $writable_dirs = [ '{{ apache_document_root }}', '{{ php_sys_temp_dir | default("/tmp") }}', '{{ php_session_save_path | default("/var/lib/php/session") }}' ]; $non_writable_dirs = []; foreach ($writable_dirs as $dir) { if (!is_writable($dir)) { $non_writable_dirs[] = $dir; } } $response['checks']['writable_dirs'] = [ 'status' => empty($non_writable_dirs) ? 'ok' : 'warning', 'non_writable' => $non_writable_dirs ]; // Check for environment variables $response['checks']['environment'] = [ 'status' => 'ok', 'environment' => '{{ environment | default("production") }}', 'region' => '{{ aws_region | default("us-east-1") }}' ]; // Set overall status based on all checks foreach ($response['checks'] as $check) { if ($check['status'] === 'error') { $response['status'] = 'unhealthy'; break; } else if ($check['status'] === 'warning' && $response['status'] !== 'unhealthy') { $response['status'] = 'degraded'; } } // Output JSON response echo json_encode($response, JSON_PRETTY_PRINT); /** * Helper function to format bytes to human-readable format */ function formatBytes($bytes, $precision = 2) { $units = ['B', 'KB', 'MB', 'GB', 'TB']; $bytes = max($bytes, 0); $pow = floor(($bytes ? log($bytes) : 0) / log(1024)); $pow = min($pow, count($units) - 1); $bytes /= pow(1024, $pow); return round($bytes, $precision) . ' ' . $units[$pow]; } /** * Helper function to get system memory information */ function getSystemMemInfo() { $result = ['total' => 0, 'free' => 0, 'used_percent' => 0]; if (function_exists('shell_exec')) { // Try to get memory info from /proc/meminfo on Linux $meminfo = @shell_exec('cat /proc/meminfo'); if ($meminfo) { preg_match('/MemTotal:\s+(\d+) kB/', $meminfo, $matches); $result['total'] = isset($matches[1]) ? $matches[1] * 1024 : 0; preg_match('/MemAvailable:\s+(\d+) kB/', $meminfo, $matches); $result['free'] = isset($matches[1]) ? $matches[1] * 1024 : 0; if ($result['total'] > 0) { $result['used_percent'] = round(100 - (($result['free'] / $result['total']) * 100)); } } } // Fallback to PHP memory limit if system memory info is not available if ($result['total'] == 0) { $mem_limit = ini_get('memory_limit'); if (preg_match('/^(\d+)(.)$/', $mem_limit, $matches)) { if ($matches[2] == 'M') { $result['total'] = $matches[1] * 1024 * 1024; } else if ($matches[2] == 'G') { $result['total'] = $matches[1] * 1024 * 1024 * 1024; } } $result['free'] = $result['total'] * 0.5; // Assume 50% free as fallback $result['used_percent'] = 50; } return $result; }