feat(cluster): module Haute Disponibilité (Cluster HA Actif/Passif Keepalived VRRP & Réplication temps réel)

public/api.php

@@ -74,6 +74,16 @@ try {
         exit;
     }
 
+    // Action inter-serveurs réplication Cluster (authentifiée par signature HMAC)
+    if ($action === 'cluster_receive_sync') {
+        $rawBody = file_get_contents('php://input') ?: '';
+        $signature = $_SERVER['HTTP_X_NEXUS_CLUSTER_SIGNATURE'] ?? '';
+        $cm = new ClusterManager($db);
+        $res = $cm->receiveSyncPayload($rawBody, $signature);
+        echo json_encode($res);
+        exit;
+    }
+
     // Toutes les autres actions requièrent une session authentifiée
     if (!Auth::isAuthenticated()) {
         http_response_code(401);
@@ -2414,6 +2424,40 @@ try {
             }
             break;
 
+        case 'cluster_status':
+            $cm = new ClusterManager($db);
+            echo json_encode([
+                'success' => true,
+                'status'  => $cm->getClusterStatus(),
+            ]);
+            break;
+
+        case 'cluster_interfaces':
+            $cm = new ClusterManager($db);
+            echo json_encode([
+                'success'    => true,
+                'interfaces' => $cm->detectNetworkInterfaces(),
+            ]);
+            break;
+
+        case 'cluster_save':
+            $cm = new ClusterManager($db);
+            $res = $cm->saveSettings($payload);
+            echo json_encode($res);
+            break;
+
+        case 'cluster_sync_now':
+            $cm = new ClusterManager($db);
+            $res = $cm->pushSyncToPeer();
+            echo json_encode($res);
+            break;
+
+        case 'cluster_switchover':
+            $cm = new ClusterManager($db);
+            $res = $cm->triggerSwitchover();
+            echo json_encode($res);
+            break;
+
         default:
             http_response_code(400);
             echo json_encode([