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feat(virtualization): Allow VMs to be assigned directly to devices (#21731)

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Enable VMs to be assigned to a standalone device without requiring a
cluster. Add device-scoped uniqueness constraints, update validation
logic, and enhance placement flexibility. Site is now auto-inherited
from the cluster or device.
This commit is contained in:
Martin Hauser
2026-03-25 18:20:00 +01:00
committed by GitHub
parent 29239ca58a
commit 2c0b6c4d55
10 changed files with 464 additions and 83 deletions
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12
docs/features/virtualization.md
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@@ -1,17 +1,19 @@
# Virtualization
Virtual machines and clusters can be modeled in NetBox alongside physical infrastructure. IP addresses and other resources are assigned to these objects just like physical objects, providing a seamless integration between physical and virtual networks.
Virtual machines, clusters, and standalone hypervisors can be modeled in NetBox alongside physical infrastructure. IP addresses and other resources are assigned to these objects just like physical objects, providing a seamless integration between physical and virtual networks.
```mermaid
flowchart TD
ClusterGroup & ClusterType --> Cluster
Cluster --> VirtualMachine
Device --> VirtualMachine
Platform --> VirtualMachine
VirtualMachine --> VMInterface
click Cluster "../../models/virtualization/cluster/"
click ClusterGroup "../../models/virtualization/clustergroup/"
click ClusterType "../../models/virtualization/clustertype/"
click Device "../../models/dcim/device/"
click Platform "../../models/dcim/platform/"
click VirtualMachine "../../models/virtualization/virtualmachine/"
click VMInterface "../../models/virtualization/vminterface/"
@@ -23,4 +25,10 @@ A cluster is one or more physical host devices on which virtual machines can run
## Virtual Machines
A virtual machine is a virtualized compute instance. These behave in NetBox very similarly to device objects, but without any physical attributes. For example, a VM may have interfaces assigned to it with IP addresses and VLANs, however its interfaces cannot be connected via cables (because they are virtual). Each VM may also define its compute, memory, and storage resources as well.
A virtual machine is a virtualized compute instance. These behave in NetBox very similarly to device objects, but without any physical attributes. For example, a VM may have interfaces assigned to it with IP addresses and VLANs, however its interfaces cannot be connected via cables (because they are virtual). Each VM may define its compute, memory, and storage resources as well.
A VM can be placed in one of three ways:
- Assigned to a site alone for logical grouping.
- Assigned to a cluster and optionally pinned to a specific host device within that cluster.
- Assigned directly to a standalone device that does not belong to any cluster.