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Share sole-tenant node groups | Compute Engine Documentation

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Shared sole-tenant node groups are similar to local sole-tenant node groups. For example, shared node groups cost the same, consume the same quota, and reside under a parent project in the resource hierarchy.

The difference between shared node groups and local node groups is that other projects in your organization can provision virtual machine (VM) instances in the shared node groups.

Sharing a node group across multiple projects or an organization can help you do the following:

• Consolidate node groups that you manage into a single project and then share those nodes with other projects or the entire organization

• Decrease costs by deleting nodes after consolidating VMs from various projects into underutilized node groups

• Manage sole-tenant nodes with a single team

• Share sole-tenant nodes with smaller projects and retain security and access control boundaries between those projects

• Perform a live migration between node groups within the same project

• Improve the utilization of your node groups and reduce the number of reserved maintenance nodes when using the Migrate within node group maintenance policy

The following diagram shows a node group that is shared with other projects so that other departments that manage VMs in those projects can provision VMs in a shared node group.

The following table compares projects that use local node groups with projects that use shared node groups. Notice that vCPU underutilization decreases in projects that use shared node groups.

Compute Engine uses the following settings for sharing node groups and provisioning VMs in the shared node groups:

• A share setting that you configure when you create or update the sole-tenant node group. To specify whether to share the node group with other projects or with the entire organization, use the gcloud CLI settings (--share-setting, --share-with) or REST settings (shareSetting, shareWith).

• A default compute.googleapis.com/project node affinity label that you use when you provision a VM in a shared node group by using node affinity labels. For information about the other default node affinity labels, see Default affinity labels.

When a node group uses the Migrate within node group maintenance policy, Compute Engine reserves at least 1 node for live migration events, so the node group must have at least 2 nodes. You can't schedule VMs on the reserved node, so node groups with this maintenance policy often have lower overall utilization. This makes workloads that require the Migrate within node group maintenance policy good candidates for node group sharing, as they often see the greatest benefit from improved utilization.

Keep in mind the following information about IAM roles and permissions when you share a node group:

• If a node group is shared with a project, any user that can create VMs in the listed projects or in the organization can provision VMs from those projects onto the shared node group without any changes to IAM roles or permissions.

• The compute.soleTenantViewer IAM role lets you list and view node groups (gcloud CLI / REST). You cannot modify node groups with this role. Any user with this role or with permissions to list node groups, regardless of the IAM permissions on the VM, can view the project ID, name, machine type, and information about local SSDs and GPUs for all VMs in the node group.

• Compliance regime limitations:

  • Regardless of the IAM permissions on the VM, any user with permissions to list node groups can view the project ID, name, and machine type for all VMs in the node group. Thus, due to risk of cross-project information disclosure, projects that have VMs provisioned in shared node groups should be under the same compliance regime.

• Google Cloud console limitations:

  • If you don't have permission to view VMs on the shared node group, those VMs won't appear on the VM list on the Sole-tenant nodes page in the Google Cloud console.
  • After modifying the sharing settings on the Sole-tenant node groups page, the Shared with setting is not updated in the UI. To see the updated Shared with setting, go to the Sole-tenant nodes page.
  • After sharing a node group with all projects within an organization or with selected projects within an organization, you can only see the shared node group from its owning project; you can't see the shared node group from the projects it has been shared with. To provision a VM on the shared node group, from the project that the node group is shared with, go to the VM instances page, and then modify the sole tenancy node affinity labels.

• Sharing limitations:

  • You must update the sharing settings from the project that owns the node group.
  • You can specify a maximum of 100 projects when you use the projects share setting.
  • You cannot share node groups between organizations. For example, if you migrate a project that contains a shared node group from one organization to another, you must also migrate all projects that have VMs running in that shared node group.
  • You cannot perform live migration between projects while using shared sole-tenant node groups. For more information, see Manually live migrate VMs.

VMs in shared node groups don't incur additional charges, and there are no additional charges for sharing node groups. For more information about sole-tenant node pricing, see Sole-tenant node pricing.

• Before creating a sole-tenant node group, create a sole-tenant node template.
• Before provisioning VMs in a sole-tenant node, check your quota. Depending on the number and size of nodes that you reserve, you might need to request additional quota.
• If you haven't already, then set up authentication. Authentication is the process by which your identity is verified for access to Google Cloud services and APIs. To run code or samples from a local development environment, you can authenticate to Compute Engine by selecting one of the following options:

  Select the tab for how you plan to use the samples on this page:

  Console

  When you use the Google Cloud console to access Google Cloud services and APIs, you don't need to set up authentication.

  gcloud

  1. Install the Google Cloud CLI. After installation, initialize the Google Cloud CLI by running the following command:

     gcloud init

     If you're using an external identity provider (IdP), you must first sign in to the gcloud CLI with your federated identity.

     Note: If you installed the gcloud CLI previously, make sure you have the latest version by running gcloud components update.
  2. Set a default region and zone.
  REST

  To use the REST API samples on this page in a local development environment, you use the credentials you provide to the gcloud CLI.

  Install the Google Cloud CLI. After installation, initialize the Google Cloud CLI by running the following command:

  gcloud init

  If you're using an external identity provider (IdP), you must first sign in to the gcloud CLI with your federated identity.

  For more information, see Authenticate for using REST in the Google Cloud authentication documentation.

To create a new node group and share it with other projects or with the entire organization, use the Google Cloud console, gcloud CLI, or REST.

To perform this task, you must have the following permissions:

• compute.nodeGroups.create permissions on the project

1. Create a sole-tenant node group. For more information, see Create a sole-tenant node group.

2. Configure the share settings by specifying one of the following in Configure share settings:

   • To share the node group with all projects in your organization, choose Share this node group with all projects within the organization.
   • To share the node group with specific projects within your organization, choose Share this node group with selected projects within the organization.

   If you don't want to share the node group, choose Do not share this node group with other projects.

To create a shared node group, use the following gcloud compute sole-tenancy node-groups create command.

gcloud compute sole-tenancy node-groups create NODE_GROUP \
    --zone=ZONE \
    --node-template=NODE_TEMPLATE \
    --target-size=SIZE \
    --share-setting=SHARE_SETTING \
    --share-with=PROJECTS

Replace the following:

• NODE_GROUP: the name of the node group.

• ZONE: the zone to create the node group in.

• NODE_TEMPLATE: the name of the previously created node template.

• SIZE: the number of nodes in the node group.

• SHARE_SETTING: the share setting for the node group. Set to projects to share with specific projects, or set to organization to share with the entire organization.

• PROJECTS: a list of project IDs or project numbers to share the node group with. Only required if you set SHARE_SETTING to projects.

To create a shared node group, use the following nodeGroups.insert method.

POST https://compute.googleapis.com/compute/v1/projects/PROJECT/zones/ZONE/nodeGroups

{
  ...
  "name": NODE_GROUP,
  "nodeTemplate": NODE_TEMPLATE,
  "size": SIZE,
  "shareSettings": {
    "shareType": SHARE_TYPE,
    "projectMap": {
      string: {
        "projectId": PROJECTS
      },
    }
  }
  ...
}

Replace the following:

• PROJECT: the name of project to create the node group in.

• ZONE: the zone to create the node group in.

• NODE_GROUP: the name of the node group.

• NODE_TEMPLATE: the name of the previously created node template.

• SIZE: the number of nodes in the node group.

• SHARE_TYPE: the share setting for the node group. Set to SPECIFIC_PROJECTS to share with specific projects, or set to ORGANIZATION to share with the entire organization.

• PROJECTS: a list of project IDs or project numbers to share the node group with. Only required if you set SHARE_TYPE to SPECIFIC_PROJECTS.

To provision a sole-tenant VM in a shared node group, use the Google Cloud console, gcloud CLI, or REST.

1. In the Google Cloud console, switch to a project that you've shared a node group with.

2. Go to the VM instances page.

   Go to VM instances

3. Click Create instance.

4. In Zone, choose the zone of the shared node group.

5. In Machine configuration > Series, choose the same machine type that the shared sole-tenant node group template specifies.

6. Expand the Advanced options section.

7. Expand the Sole-tenancy section.

8. Click Browse.

9. Choose Select project and specify the project that contains the shared node group.

10. Choose the sole-tenant node group or a specific sole-tenant node in that group to provision the VM on.

Provision a VM in a shared node group by using the node group name

To provision a sole-tenant VM in a shared node group by using the node group name, use the following gcloud compute instances create command.

gcloud compute instances create VM_NAME \
    --machine-type=MACHINE_TYPE \
    --node-group=NODE_GROUP \
    --node-project=NODE_PROJECT

Replace the following:

• VM_NAME: the name of the new sole-tenant VM to create in a shared node group

• MACHINE_TYPE: the machine type for the new sole-tenant VM

• NODE_GROUP: the name of the shared node group to create the sole-tenant VM in

• NODE_PROJECT: the project containing the node group to provision the VM in

Provision a VM in a shared node group by using a node affinity file

To provision a sole-tenant VM in a shared node group by using a node affinity file, use the following gcloud compute instances create command.

gcloud compute instances create VM_NAME \
    --machine-type=MACHINE_TYPE \
    --node-affinity-file=NODE_AFFINITY_FILE

Replace the following:

• VM_NAME: the name of the sole-tenant VM to create in a shared node group by using an affinity label.

• MACHINE_TYPE: the machine type of the sole-tenant VM to create in a shared node group.

• NODE_AFFINITY_FILE: the name of the .json file containing the node affinity information. In the node affinity file, set the affinity label key to "compute.googleapis.com/project", the operator equal to "IN", and the value equal to the project containing the node group. For more information about how to configure node affinity, see Configure node affinity labels.

To provision a sole-tenant VM in a shared node group by using a node affinity file, use the following nodeGroups.insert method.

POST https://compute.googleapis.com/compute/v1/projects/PROJECT/zones/ZONE/instances

{
  ...
  "name": VM_NAME,
  "machineType": MACHINE_TYPE,
  "scheduling": {
    ...
    "nodeAffinities": [
      {
        "key": KEY,
        "operator": OPERATOR,
        "values": [
          VALUE
        ]
      }
    ],
    ...
  },
  ...
}

Replace the following:

• PROJECT: the name of the project that owns the node group.

• ZONE: the zone of the node group.

• VM_NAME: the name of the sole-tenant VM to create in a shared node group by using an affinity label.

• MACHINE_TYPE: the machine type of the sole-tenant VM to create in a shared node group.

• KEY: the affinity label. Set to "compute.googleapis.com/project".

• OPERATOR: the affinity label operator. Set to "IN".

• VALUE: the project containing the node group to provision the VM in. Specify one project by using either the project name or project ID.

For more information about how to configure node affinity, see Configure node affinity labels.

To view the sharing settings of a node group, use the Google Cloud console, gcloud CLI, or REST.

To perform this task, you must have the following permissions:

• compute.nodeGroups.list permissions on the project

1. In the Google Cloud console, go to the Sole-tenant nodes page.

   Go to Sole-tenant nodes

2. To view the properties of the node group, in the Name column, click the name of the node group.

To view the sharing settings of a node group, use the following gcloud compute sole-tenancy node-groups describe command.

gcloud compute sole-tenancy node-groups describe NODE_GROUP

Replace NODE_GROUP with the name of the node group to view the sharing settings of.

To view the sharing settings of a node group, use the following nodeGroups.get method.

GET https://compute.googleapis.com/compute/v1/projects/PROJECT/zones/ZONE/nodeGroups

Replace the following:

• PROJECT: the name of project with the node group to view the sharing settings of

• ZONE: the zone containing the node group to view the sharing settings of

To share an existing node group with other projects or the entire organization, use the Google Cloud console, gcloud CLI, or REST.

To perform this task, you must have the following permissions:

• compute.nodeGroups.update permissions on the project in which you created the node group

1. In the Google Cloud console, go to the Sole-tenant nodes page.

   Go to Sole-tenant nodes

2. In the Name column, click the name of the node group.

3. To share the node group with all projects within the organization or with selected projects within the organization, in Overview > Shared with, click Edit edit.

To update the sharing settings of a node group, use the following gcloud compute sole-tenancy node-groups update command.

gcloud compute sole-tenancy node-groups update NODE_GROUP \
    --zone=ZONE \
    --share-setting=SHARE_SETTING \
    --share-with=PROJECTS

Replace the following:

• NODE_GROUP: the name of the node group to update the sharing settings of.

• SHARE_SETTING: the share setting for the node group. Set to projects to share with specific projects, or set to organization to share with the entire organization.

• PROJECTS: a list of project IDs or project numbers to share the node group with. Only required if you set SHARE_SETTING to projects.

To update the sharing settings of a node group, use the following nodeGroups.patch method.

PATCH https://compute.googleapis.com/compute/v1/projects/PROJECT/zones/ZONE/nodeGroups/NODE_GROUP

{
  "shareSettings": {
    "shareType": SHARE_TYPE,
    "projectMap": {
      string: {
        "projectId": PROJECTS
      },
    }
  }
}

Replace the following:

• PROJECT: the name of the project with the node groups to update the sharing settings of.

• ZONE: the zone containing the node groups to update the sharing settings of.

• NODE_GROUP: the name of the node group to update the sharing settings of.

• SHARE_TYPE: the share setting for the node group. Set to projects to share with specific projects, or set to organization to share with the entire organization.

• PROJECTS: a list of project IDs or project numbers to share the node group with. Only required if you set SHARE_SETTING to SPECIFIC_PROJECTS.

To stop sharing a node group with other projects or the entire organization, use the gcloud CLI or REST.

To perform this task, you must have the following permissions:

• compute.nodeGroups.update permissions on the project in which you created the node group

1. In the Google Cloud console, go to the Sole-tenant nodes page.

   Go to Sole-tenant nodes

2. Click the Name of the node group.

3. In Overview > Shared with, click Edit edit.

4. To stop sharing, choose Do not share this node group with other projects.

To stop sharing a node group with other projects or the entire organization, use the following gcloud compute sole-tenancy node-groups update command.

gcloud compute sole-tenancy node-groups update NODE_GROUP \
    --zone=ZONE \
    --share-setting=local

Replace the NODE_GROUP with the name of the node group to stop sharing.

To stop sharing a node group with other projects or the entire organization, use the following nodeGroups.patch method.

PATCH https://compute.googleapis.com/compute/v1/projects/PROJECT/zones/ZONE/nodeGroups/NODE_GROUP

{
  "shareSettings": {
    "shareType": LOCAL
  }
}

Replace the following:

• PROJECT: the name of the project with the node group to stop sharing

• ZONE: the zone containing the node group to stop sharing

• NODE_GROUP: the name of the node group to stop sharing

To delete a shared node group from the owning project, use the Google Cloud console, gcloud CLI, or REST. Before deleting a node group, stop all VMs that are running in the node group.

To perform this task, you must have the following permissions:

• compute.nodeGroups.delete permissions on the project in which you created the node group

1. In the Google Cloud console, go to the Sole-tenant nodes page.

   Go to Sole-tenant nodes

2. In the Name column, click the name of the node group.

3. Click Delete.

To delete a shared node group from the owning project, use the following gcloud compute sole-tenancy node-groups delete command.

gcloud compute sole-tenancy node-groups delete NODE_GROUP

Replace NODE_GROUP with the name of the node group to delete.

To delete a shared node group from the owning project, use the following nodeGroups.delete method.

DELETE https://compute.googleapis.com/compute/v1/projects/PROJECT/zones/ZONE/nodeGroups/NODE_GROUP

Replace the following:

• PROJECT: the name of the project with the node group to delete

• ZONE: the zone containing the node group to delete

• NODE_GROUP: the name of the node group to delete

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