Files
cozystack/packages/apps/virtual-machine
Andrei Kvapil ce5fd9d292 [virtual-machine] Fix vm update hook (#1376)
Signed-off-by: Andrei Kvapil <kvapss@gmail.com>

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## What this PR does

Fix regression introduced by
https://github.com/cozystack/cozystack/pull/1169, now we have correct
singular names for virtualmachines which are conflictiing with KubeVirt
ones.

Solution: explicitly specify apiversion

### Release note

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- Explain what has changed internally and for users.
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- Follow the guidelines at
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```release-note
[virtual-machine] Fix vm update hook
```

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->

## Summary by CodeRabbit

* **Bug Fixes**
* Improved reliability of VM update hooks by targeting the correct API
resource, preventing occasional patch failures when updating
instancetype and preference.
* Ensures VM updates apply consistently across environments without
changing existing behavior.

* **Chores**
* Aligned resource references with fully qualified API names to enhance
compatibility with current cluster configurations.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->
2025-09-01 19:46:14 +02:00
..
2024-10-17 14:52:48 +02:00
2024-10-17 14:52:48 +02:00
2025-08-18 10:29:31 +03:00
2025-08-18 10:29:31 +03:00

Virtual Machine (simple)

A Virtual Machine (VM) simulates computer hardware, enabling various operating systems and applications to run in an isolated environment.

Deployment Details

The virtual machine is managed and hosted through KubeVirt, allowing you to harness the benefits of virtualization within your Kubernetes ecosystem.

Accessing virtual machine

You can access the virtual machine using the virtctl tool:

To access the serial console:

virtctl console <vm>

To access the VM using VNC:

virtctl vnc <vm>

To SSH into the VM:

virtctl ssh <user>@<vm>

Parameters

Common parameters

Name Description Type Value
external Enable external access from outside the cluster bool false
externalMethod Specify method to pass through the traffic to the virtual machine. Allowed values: WholeIP and PortList string PortList
externalPorts Specify ports to forward from outside the cluster []int [22]
running if the virtual machine should be running bool true
instanceType Virtual Machine instance type string u1.medium
instanceProfile Virtual Machine preferences profile string ubuntu
systemDisk System disk configuration object {}
systemDisk.image The base image for the virtual machine. Allowed values: ubuntu, cirros, alpine, fedora and talos string ubuntu
systemDisk.storage The size of the disk allocated for the virtual machine string 5Gi
systemDisk.storageClass StorageClass used to store the data *string replicated
gpus List of GPUs to attach []object []
gpus[i].name The name of the GPU to attach. This should match the GPU resource name in the cluster. string ""
resources Resources *object {}
resources.cpu The number of CPU cores allocated to the virtual machine *quantity null
resources.sockets The number of CPU sockets allocated to the virtual machine (used to define vCPU topology) *quantity null
resources.memory The amount of memory allocated to the virtual machine *quantity null
sshKeys List of SSH public keys for authentication. Can be a single key or a list of keys. []string []
cloudInit Cloud-init user data config. See cloud-init documentation for more details: format, examples. string ""
cloudInitSeed A seed string to generate an SMBIOS UUID for the VM. string ""

U Series

The U Series is quite neutral and provides resources for general purpose applications.

U is the abbreviation for "Universal", hinting at the universal attitude towards workloads.

VMs of instance types will share physical CPU cores on a time-slice basis with other VMs.

U Series Characteristics

Specific characteristics of this series are:

  • Burstable CPU performance - The workload has a baseline compute performance but is permitted to burst beyond this baseline, if excess compute resources are available.
  • vCPU-To-Memory Ratio (1:4) - A vCPU-to-Memory ratio of 1:4, for less noise per node.

O Series

The O Series is based on the U Series, with the only difference being that memory is overcommitted.

O is the abbreviation for "Overcommitted".

UO Series Characteristics

Specific characteristics of this series are:

  • Burstable CPU performance - The workload has a baseline compute performance but is permitted to burst beyond this baseline, if excess compute resources are available.
  • Overcommitted Memory - Memory is over-committed in order to achieve a higher workload density.
  • vCPU-To-Memory Ratio (1:4) - A vCPU-to-Memory ratio of 1:4, for less noise per node.

CX Series

The CX Series provides exclusive compute resources for compute intensive applications.

CX is the abbreviation of "Compute Exclusive".

The exclusive resources are given to the compute threads of the VM. In order to ensure this, some additional cores (depending on the number of disks and NICs) will be requested to offload the IO threading from cores dedicated to the workload. In addition, in this series, the NUMA topology of the used cores is provided to the VM.

CX Series Characteristics

Specific characteristics of this series are:

  • Hugepages - Hugepages are used in order to improve memory performance.
  • Dedicated CPU - Physical cores are exclusively assigned to every vCPU in order to provide fixed and high compute guarantees to the workload.
  • Isolated emulator threads - Hypervisor emulator threads are isolated from the vCPUs in order to reduce emaulation related impact on the workload.
  • vNUMA - Physical NUMA topology is reflected in the guest in order to optimize guest sided cache utilization.
  • vCPU-To-Memory Ratio (1:2) - A vCPU-to-Memory ratio of 1:2.

M Series

The M Series provides resources for memory intensive applications.

M is the abbreviation of "Memory".

M Series Characteristics

Specific characteristics of this series are:

  • Hugepages - Hugepages are used in order to improve memory performance.
  • Burstable CPU performance - The workload has a baseline compute performance but is permitted to burst beyond this baseline, if excess compute resources are available.
  • vCPU-To-Memory Ratio (1:8) - A vCPU-to-Memory ratio of 1:8, for much less noise per node.

RT Series

The RT Series provides resources for realtime applications, like Oslat.

RT is the abbreviation for "realtime".

This series of instance types requires nodes capable of running realtime applications.

RT Series Characteristics

Specific characteristics of this series are:

  • Hugepages - Hugepages are used in order to improve memory performance.
  • Dedicated CPU - Physical cores are exclusively assigned to every vCPU in order to provide fixed and high compute guarantees to the workload.
  • Isolated emulator threads - Hypervisor emulator threads are isolated from the vCPUs in order to reduce emaulation related impact on the workload.
  • vCPU-To-Memory Ratio (1:4) - A vCPU-to-Memory ratio of 1:4 starting from the medium size.

Development

To get started with customizing or creating your own instancetypes and preferences see DEVELOPMENT.md.

Resources

The following instancetype resources are provided by Cozystack:

Name vCPUs Memory
cx1.2xlarge 8 16Gi
cx1.4xlarge 16 32Gi
cx1.8xlarge 32 64Gi
cx1.large 2 4Gi
cx1.medium 1 2Gi
cx1.xlarge 4 8Gi
gn1.2xlarge 8 32Gi
gn1.4xlarge 16 64Gi
gn1.8xlarge 32 128Gi
gn1.xlarge 4 16Gi
m1.2xlarge 8 64Gi
m1.4xlarge 16 128Gi
m1.8xlarge 32 256Gi
m1.large 2 16Gi
m1.xlarge 4 32Gi
n1.2xlarge 16 32Gi
n1.4xlarge 32 64Gi
n1.8xlarge 64 128Gi
n1.large 4 8Gi
n1.medium 4 4Gi
n1.xlarge 8 16Gi
o1.2xlarge 8 32Gi
o1.4xlarge 16 64Gi
o1.8xlarge 32 128Gi
o1.large 2 8Gi
o1.medium 1 4Gi
o1.micro 1 1Gi
o1.nano 1 512Mi
o1.small 1 2Gi
o1.xlarge 4 16Gi
rt1.2xlarge 8 32Gi
rt1.4xlarge 16 64Gi
rt1.8xlarge 32 128Gi
rt1.large 2 8Gi
rt1.medium 1 4Gi
rt1.micro 1 1Gi
rt1.small 1 2Gi
rt1.xlarge 4 16Gi
u1.2xlarge 8 32Gi
u1.2xmedium 2 4Gi
u1.4xlarge 16 64Gi
u1.8xlarge 32 128Gi
u1.large 2 8Gi
u1.medium 1 4Gi
u1.micro 1 1Gi
u1.nano 1 512Mi
u1.small 1 2Gi
u1.xlarge 4 16Gi

The following preference resources are provided by Cozystack:

Name Guest OS
alpine Alpine
centos.7 CentOS 7
centos.7.desktop CentOS 7
centos.stream10 CentOS Stream 10
centos.stream10.desktop CentOS Stream 10
centos.stream8 CentOS Stream 8
centos.stream8.desktop CentOS Stream 8
centos.stream8.dpdk CentOS Stream 8
centos.stream9 CentOS Stream 9
centos.stream9.desktop CentOS Stream 9
centos.stream9.dpdk CentOS Stream 9
cirros Cirros
fedora Fedora (amd64)
fedora.arm64 Fedora (arm64)
opensuse.leap OpenSUSE Leap
opensuse.tumbleweed OpenSUSE Tumbleweed
rhel.10 Red Hat Enterprise Linux 10 Beta (amd64)
rhel.10.arm64 Red Hat Enterprise Linux 10 Beta (arm64)
rhel.7 Red Hat Enterprise Linux 7
rhel.7.desktop Red Hat Enterprise Linux 7
rhel.8 Red Hat Enterprise Linux 8
rhel.8.desktop Red Hat Enterprise Linux 8
rhel.8.dpdk Red Hat Enterprise Linux 8
rhel.9 Red Hat Enterprise Linux 9 (amd64)
rhel.9.arm64 Red Hat Enterprise Linux 9 (arm64)
rhel.9.desktop Red Hat Enterprise Linux 9 Desktop (amd64)
rhel.9.dpdk Red Hat Enterprise Linux 9 DPDK (amd64)
rhel.9.realtime Red Hat Enterprise Linux 9 Realtime (amd64)
sles SUSE Linux Enterprise Server
ubuntu Ubuntu
windows.10 Microsoft Windows 10
windows.10.virtio Microsoft Windows 10 (virtio)
windows.11 Microsoft Windows 11
windows.11.virtio Microsoft Windows 11 (virtio)
windows.2k16 Microsoft Windows Server 2016
windows.2k16.virtio Microsoft Windows Server 2016 (virtio)
windows.2k19 Microsoft Windows Server 2019
windows.2k19.virtio Microsoft Windows Server 2019 (virtio)
windows.2k22 Microsoft Windows Server 2022
windows.2k22.virtio Microsoft Windows Server 2022 (virtio)
windows.2k25 Microsoft Windows Server 2025
windows.2k25.virtio Microsoft Windows Server 2025 (virtio)