The following steps guide you through the process of creating a cluster and deploying a sample app. This example assumes that you have successfully [installed and set up Constellation](install.md),
and have access to a cloud subscription.
:::tip
If you don't have a cloud subscription, check out [MiniConstellation](first-steps-local.md), which lets you set up a local Constellation cluster using virtualization.
:::
## Create a cluster
1. Create the configuration file for your selected cloud provider.
<tabsgroupId="csp">
<tabItemvalue="azure"label="Azure">
```bash
constellation config generate azure
```
</tabItem>
<tabItemvalue="gcp"label="GCP">
```bash
constellation config generate gcp
```
</tabItem>
<tabItemvalue="aws"label="AWS">
```bash
constellation config generate aws
```
</tabItem>
</tabs>
This creates the file `constellation-conf.yaml` in your current working directory.
2. Fill in your cloud provider specific information.
<tabsgroupId="csp">
<tabItemvalue="azure"label="Azure (CLI)">
You need several resources for the cluster. You can use the following `az` script to create them:
```bash
RESOURCE_GROUP=constellation # enter name of new resource group for your cluster here
LOCATION=westus # enter location of resources here
SUBSCRIPTION_ID=$(az account show --query id --out tsv)
SERVICE_PRINCIPAL_NAME=constell
az group create --name "${RESOURCE_GROUP}" --location "${LOCATION}"
az group create --name "${RESOURCE_GROUP}-identity" --location "${LOCATION}"
az ad sp create-for-rbac -n "${SERVICE_PRINCIPAL_NAME}" --role Owner --scopes "/subscriptions/${SUBSCRIPTION_ID}/resourceGroups/${RESOURCE_GROUP}" | tee azureServiceAccountKey.json
az identity create -g "${RESOURCE_GROUP}-identity" -n "${SERVICE_PRINCIPAL_NAME}"
Fill the values produced by the script into your configuration file.
By default, Constellation uses `Standard_DC4as_v5` CVMs (4 vCPUs, 16 GB RAM) to create your cluster. Optionally, you can switch to a different VM type by modifying **instanceType** in the configuration file. For CVMs, any VM type with a minimum of 4 vCPUs from the [DCasv5 & DCadsv5](https://docs.microsoft.com/en-us/azure/virtual-machines/dcasv5-dcadsv5-series) or [ECasv5 & ECadsv5](https://docs.microsoft.com/en-us/azure/virtual-machines/ecasv5-ecadsv5-series) families is supported.
Run `constellation config instance-types` to get the list of all supported options.
You can view your subscription UUID via `az account show` and read the `id` field. For more information refer to [Azure's documentation](https://docs.microsoft.com/en-us/azure/azure-portal/get-subscription-tenant-id#find-your-azure-subscription).
You can view your tenant UUID via `az account show` and read the `tenant` field. For more information refer to [Azure's documentation](https://docs.microsoft.com/en-us/azure/azure-portal/get-subscription-tenant-id#find-your-azure-ad-tenant).
* **location**: The Azure datacenter location you want to deploy your cluster in, e.g., `westus`. CVMs are currently only supported in a few regions, check [Azure's products available by region](https://azure.microsoft.com/en-us/global-infrastructure/services/?products=virtual-machines®ions=all). These are:
* **resourceGroup**: [Create a new resource group in Azure](https://portal.azure.com/#create/Microsoft.ResourceGroup) for your Constellation cluster. Set this configuration field to the name of the created resource group.
* **userAssignedIdentity**: [Create a new managed identity in Azure](https://portal.azure.com/#create/Microsoft.ManagedIdentity). You should create the identity in a different resource group as all resources within the cluster resource group will be deleted on cluster termination.
Add two role assignments to the identity: `Virtual Machine Contributor` and `Application Insights Component Contributor`. The `scope` of both should refer to the previously created cluster resource group.
Set the configuration value to the full ID of the created identity, e.g., `/subscriptions/8b8bd01f-efd9-4113-9bd1-c82137c32da7/resourcegroups/constellation-identity/providers/Microsoft.ManagedIdentity/userAssignedIdentities/constellation-identity`. You can get it by opening the `JSON View` from the `Overview` section of the identity.
The user-assigned identity is used by instances of the cluster to access other cloud resources.
For more information about managed identities refer to [Azure's documentation](https://docs.microsoft.com/en-us/azure/active-directory/managed-identities-azure-resources/how-manage-user-assigned-managed-identities).
* **appClientID**: [Create a new app registration in Azure](https://portal.azure.com/#view/Microsoft_AAD_RegisteredApps/CreateApplicationBlade/quickStartType~/null/isMSAApp~/false).
* **instanceType**: The VM type you want to use for your Constellation nodes.
For CVMs, any type with a minimum of 4 vCPUs from the [DCasv5 & DCadsv5](https://docs.microsoft.com/en-us/azure/virtual-machines/dcasv5-dcadsv5-series) or [ECasv5 & ECadsv5](https://docs.microsoft.com/en-us/azure/virtual-machines/ecasv5-ecadsv5-series) families is supported. It defaults to `Standard_DC4as_v5` (4 vCPUs, 16 GB RAM).
Run `constellation config instance-types` to get the list of all supported options.
</tabItem>
<tabItemvalue="gcp"label="GCP (CLI)">
You need a service account for the cluster. You can use the following `gcloud` script to create it:
```bash
SERVICE_ACCOUNT_ID=constell # enter name of service account here
gcloud iam service-accounts create "${SERVICE_ACCOUNT_ID}" --description="Service account used inside Constellation" --display-name="Constellation service account" --project="${PROJECT_ID}"
Fill the values produced by the script into your configuration file.
By default, Constellation uses `n2d-standard-4` VMs (4 vCPUs, 16 GB RAM) to create your cluster. Optionally, you can switch to a different VM type by modifying **instanceType** in the configuration file. Supported are all machines from the N2D family. Refer to [N2D machine series](https://cloud.google.com/compute/docs/general-purpose-machines#n2d_machines) or run `constellation config instance-types` to get the list of all supported options.
</tabItem>
<tabItemvalue="gcp-console"label="GCP (Console)">
* **project**: The ID of your GCP project, e.g., `constellation-129857`.
You can find it on the [welcome screen of your GCP project](https://console.cloud.google.com/welcome). For more information refer to [Google's documentation](https://support.google.com/googleapi/answer/7014113).
* **serviceAccountKeyPath**: To configure this, you need to create a GCP [service account](https://cloud.google.com/iam/docs/service-accounts) with the following permissions:
Afterward, create and download a new JSON key for this service account. Place the downloaded file in your Constellation workspace, and set the config parameter to the filename, e.g., `constellation-129857-15343dba46cb.json`.
Supported are all machines from the N2D family. It defaults to `n2d-standard-4` (4 vCPUs, 16 GB RAM), but you can use any other VMs from the same family. Refer to [N2D machine series](https://cloud.google.com/compute/docs/general-purpose-machines#n2d_machines) or run `constellation config instance-types` to get the list of all supported options.
If you require the OS image to be available in another region, [let us know](https://github.com/edgelesssys/constellation/issues/new?assignees=&labels=&template=feature_request.md&title=Support+new+AWS+image+region:+xx-xxxx-x).
You can find a list of all [regions in AWS's documentation](https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/using-regions-availability-zones.html#concepts-available-regions).
Learn more about [availability zones in AWS's documentation](https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/using-regions-availability-zones.html#concepts-availability-zones).
Use the [provided Terraform script](https://github.com/edgelesssys/constellation/tree/release/v2.2/hack/terraform/aws/iam) to generate the necessary profile. The profile name will be provided as Terraform output value: `control_plane_instance_profile`.
Alternatively, you can create the AWS profile with a tool of your choice. Use the JSON policy in [main.tf](https://github.com/edgelesssys/constellation/tree/release/v2.2/hack/terraform/aws/iam/main.tf) in the resource `aws_iam_policy.control_plane_policy`.
Use the [provided Terraform script](https://github.com/edgelesssys/constellation/tree/release/v2.2/hack/terraform/aws/iam) to generate the necessary profile. The profile name will be provided as Terraform output value: `worker_nodes_instance_profile`.
Alternatively, you can create the AWS profile with a tool of your choice. Use the JSON policy in [main.tf](https://github.com/edgelesssys/constellation/tree/release/v2.2/hack/terraform/aws/iam/main.tf) in the resource `aws_iam_policy.worker_node_policy`.
In case you don't have access to CVMs on Azure, you may use less secure [trusted launch VMs](../workflows/trusted-launch.md) instead. For this, set **confidentialVM** to `false` in the configuration file.
:::
3. Download the trusted measurements for your configured image.
```bash
constellation config fetch-measurements
```
For details, see the [verification section](../workflows/verify-cluster.md).
4. Create the cluster with one control-plane node and two worker nodes. `constellation create` uses options set in `constellation-conf.yaml`.
:::tip
On Azure, you may need to wait 15+ minutes at this point for role assignments to propagate.
Initialization on **Azure** might be slow and might take up to 60 minutes to initialize all Kubernetes nodes. We're already working with Microsoft to resolve the issue. The stability of already initialized clusters isn't affected.
