diff --git a/backend/app/routers/instances.py b/backend/app/routers/instances.py
index 8c44860..0f02367 100644
--- a/backend/app/routers/instances.py
+++ b/backend/app/routers/instances.py
@@ -1,11 +1,15 @@
-from fastapi import APIRouter, Depends
+import logging
+
+from fastapi import APIRouter, Depends, HTTPException, status
 from sqlalchemy import select
 from sqlalchemy.orm import Session
 
-from .. import models, schemas
+from .. import models, proxmox_client as pve, schemas
+from ..config import settings
 from ..database import get_db
 from ..deps import get_current_user
 
+logger = logging.getLogger(__name__)
 router = APIRouter(prefix="/instances", tags=["instances"])
 
 
@@ -22,3 +26,79 @@ def list_instances(
         query = query.where(models.Instance.owner_id == user.id)
     query = query.order_by(models.Instance.created_at.desc())
     return list(db.scalars(query))
+
+
+def _save_error(db: Session, instance: models.Instance, exc: Exception) -> None:
+    """Помечает инстанс ошибочным, не сохраняя секреты или детали API."""
+    instance.status = models.InstanceStatus.error
+    db.commit()
+    logger.exception("Ошибка провижининга instance_id=%s: %s", instance.id, exc)
+
+
+@router.post("", response_model=schemas.InstanceCreateOut, status_code=status.HTTP_201_CREATED)
+def create_instance(
+    payload: schemas.InstanceCreate,
+    db: Session = Depends(get_db),
+    user: models.User = Depends(get_current_user),
+):
+    """Создаёт и запускает VM/LXC из активного шаблона.
+
+    Операция синхронная и может занимать несколько минут; очередь задач будет
+    добавлена следующим этапом.
+    """
+    template = db.scalar(
+        select(models.Template).where(
+            models.Template.id == payload.template_id,
+            models.Template.is_active.is_(True),
+        )
+    )
+    if template is None:
+        raise HTTPException(status_code=404, detail="Активный шаблон не найден")
+
+    vmid = pve.next_vmid()
+    instance = models.Instance(
+        name=payload.name,
+        vmid=vmid,
+        node=settings.pve_node,
+        guest_type=template.guest_type,
+        status=models.InstanceStatus.creating,
+        owner_id=user.id,
+        template_id=template.id,
+    )
+    db.add(instance)
+    db.commit()
+    db.refresh(instance)
+
+    try:
+        if template.guest_type == models.GuestType.vm:
+            pve.provision_vm(
+                source_vmid=template.source_vmid,
+                vmid=vmid,
+                name=payload.name,
+                cores=template.cores,
+                memory_mb=template.memory_mb,
+                disk_gb=template.disk_gb,
+                username=payload.username,
+                password=payload.password,
+            )
+        else:
+            pve.provision_lxc(
+                source_template=template.source_template,
+                vmid=vmid,
+                name=payload.name,
+                cores=template.cores,
+                memory_mb=template.memory_mb,
+                disk_gb=template.disk_gb,
+                password=payload.password,
+            )
+    except Exception as exc:
+        _save_error(db, instance, exc)
+        raise HTTPException(status_code=502, detail="Не удалось создать инстанс в Proxmox")
+
+    instance.status = models.InstanceStatus.running
+    db.commit()
+    db.refresh(instance)
+    return schemas.InstanceCreateOut(
+        **schemas.InstanceOut.model_validate(instance).model_dump(),
+        initial_password=payload.password,
+    )