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docs: add Terraform module (#2560)
Co-authored-by: Thomas Tendyck <51411342+thomasten@users.noreply.github.com
This commit is contained in:
Adrian Stobbe
GitHub
parent
ac8aac0e34
commit
a88a731576
@ -35,218 +35,20 @@ constellation create
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*create* stores your cluster's state in a [`constellation-terraform`](../architecture/orchestration.md#cluster-creation-process) directory in your workspace.
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</tabItem>
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<tabItem value="terraform" label="Terraform">
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Terraform allows for an easier GitOps integration as well as meeting regulatory requirements.
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Since the Constellation CLI also uses Terraform under the hood, you can reuse the same Terraform files.
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:::info
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Familiarize with the [Terraform usage policy](../reference/terraform.md) before manually interacting with Terraform to create a cluster.
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Please also refrain from changing the Terraform resource definitions, as Constellation is tightly coupled to them.
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:::
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Download the Terraform files for the selected CSP from the [GitHub repository](https://github.com/edgelesssys/constellation/tree/main/terraform/infrastructure).
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Find the image reference for your CSP and region, execute:
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```bash
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CONSTELL_VER=vX.Y.Z
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curl -s https://cdn.confidential.cloud/constellation/v2/ref/-/stream/stable/$CONSTELL_VER/image/info.json | jq
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```
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From the list, select the `reference` for your CSP / Attestation combination and save it in the `IMAGE_REF` environment variable.
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Create a `terraform.tfvars` file.
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There, define all needed variables found in `variables.tf` using the values from the `constellation-config.yaml`.
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<tabs groupId="csp">
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<tabItem value="aws" label="AWS">
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```bash
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echo "name = \"$(yq '.name' constellation-conf.yaml)\"" >> terraform.tfvars
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echo "debug = $(yq '.debugCluster' constellation-conf.yaml)" >> terraform.tfvars
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echo "custom_endpoint = \"$(yq '.customEndpoint' constellation-conf.yaml)\"" >> terraform.tfvars
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echo "node_groups = {
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control_plane_default = {
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role = \"$(yq '.nodeGroups.control_plane_default.role' constellation-conf.yaml)\"
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zone = \"$(yq '.nodeGroups.control_plane_default.zone' constellation-conf.yaml)\"
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instance_type = \"$(yq '.nodeGroups.control_plane_default.instanceType' constellation-conf.yaml)\"
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disk_size = \"$(yq '.nodeGroups.control_plane_default.stateDiskSizeGB' constellation-conf.yaml)\"
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disk_type = \"$(yq '.nodeGroups.control_plane_default.stateDiskType' constellation-conf.yaml)\"
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initial_count = \"$(yq '.nodeGroups.control_plane_default.initialCount' constellation-conf.yaml)\"
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}
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worker_default = {
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role = \"$(yq '.nodeGroups.worker_default.role' constellation-conf.yaml)\"
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zone = \"$(yq '.nodeGroups.worker_default.zone' constellation-conf.yaml)\"
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instance_type = \"$(yq '.nodeGroups.worker_default.instanceType' constellation-conf.yaml)\"
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disk_size = \"$(yq '.nodeGroups.worker_default.stateDiskSizeGB' constellation-conf.yaml)\"
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disk_type = \"$(yq '.nodeGroups.worker_default.stateDiskType' constellation-conf.yaml)\"
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initial_count = \"$(yq '.nodeGroups.worker_default.initialCount' constellation-conf.yaml)\"
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}
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}" >> terraform.tfvars
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echo "iam_instance_profile_control_plane = \"$(yq '.provider.aws.iamProfileControlPlane' constellation-conf.yaml)\"" >> terraform.tfvars
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echo "iam_instance_profile_worker_nodes = \"$(yq '.provider.aws.iamProfileWorkerNodes' constellation-conf.yaml)\"" >> terraform.tfvars
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echo "region = \"$(yq '.provider.aws.region' constellation-conf.yaml)\"" >> terraform.tfvars
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echo "zone = \"$(yq '.provider.aws.zone' constellation-conf.yaml)\"" >> terraform.tfvars
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echo "ami = \"$(yq '.provider.aws.zone' constellation-conf.yaml)\"" >> terraform.tfvars
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echo "enable_snp = $(yq '.attestation | has("awsSEVSNP")' constellation-conf.yaml)" >> terraform.tfvars
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terraform fmt terraform.tfvars
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```
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</tabItem>
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<tabItem value="azure" label="Azure">
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```bash
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echo "name = \"$(yq '.name' constellation-conf.yaml)\"" >> terraform.tfvars
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echo "debug = $(yq '.debugCluster' constellation-conf.yaml)" >> terraform.tfvars
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echo "custom_endpoint = \"$(yq '.customEndpoint' constellation-conf.yaml)\"" >> terraform.tfvars
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echo "image_id = \"$IMAGE_REF\"" >> terraform.tfvars
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echo "node_groups = {
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control_plane_default = {
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role = \"$(yq '.nodeGroups.control_plane_default.role' constellation-conf.yaml)\"
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zones = [ \"$(yq '.nodeGroups.worker_default.zone' constellation-conf.yaml)\" ]
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instance_type = \"$(yq '.nodeGroups.control_plane_default.instanceType' constellation-conf.yaml)\"
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disk_size = \"$(yq '.nodeGroups.control_plane_default.stateDiskSizeGB' constellation-conf.yaml)\"
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disk_type = \"$(yq '.nodeGroups.control_plane_default.stateDiskType' constellation-conf.yaml)\"
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initial_count = \"$(yq '.nodeGroups.control_plane_default.initialCount' constellation-conf.yaml)\"
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}
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worker_default = {
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role = \"$(yq '.nodeGroups.worker_default.role' constellation-conf.yaml)\"
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zones = [ \"$(yq '.nodeGroups.worker_default.zone' constellation-conf.yaml)\" ]
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instance_type = \"$(yq '.nodeGroups.worker_default.instanceType' constellation-conf.yaml)\"
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disk_size = \"$(yq '.nodeGroups.worker_default.stateDiskSizeGB' constellation-conf.yaml)\"
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disk_type = \"$(yq '.nodeGroups.worker_default.stateDiskType' constellation-conf.yaml)\"
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initial_count = \"$(yq '.nodeGroups.worker_default.initialCount' constellation-conf.yaml)\"
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}
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}" >> terraform.tfvars
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echo "location = \"$(yq '.provider.azure.location' constellation-conf.yaml)\"" >> terraform.tfvars
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echo "create_maa = $(yq '.attestation | has("azureSEVSNP")' constellation-conf.yaml)" >> terraform.tfvars
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echo "confidential_vm = $(yq '.attestation | has("azureSEVSNP")' constellation-conf.yaml)" >> terraform.tfvars
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echo "secure_boot = $(yq '.provider.azure.secureBoot' constellation-conf.yaml)" >> terraform.tfvars
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echo "resource_group = \"$(yq '.provider.azure.resourceGroup' constellation-conf.yaml)\"" >> terraform.tfvars
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echo "user_assigned_identity = \"$(yq '.provider.azure.userAssignedIdentity' constellation-conf.yaml)\"" >> terraform.tfvars
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terraform fmt terraform.tfvars
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```
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</tabItem>
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<tabItem value="gcp" label="GCP">
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```bash
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echo "name = \"$(yq '.name' constellation-conf.yaml)\"" >> terraform.tfvars
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echo "debug = $(yq '.debugCluster' constellation-conf.yaml)" >> terraform.tfvars
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echo "custom_endpoint = \"$(yq '.customEndpoint' constellation-conf.yaml)\"" >> terraform.tfvars
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echo "image_id = \"$IMAGE_REF\"" >> terraform.tfvars
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echo "node_groups = {
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control_plane_default = {
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role = \"$(yq '.nodeGroups.control_plane_default.role' constellation-conf.yaml)\"
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zone = \"$(yq '.nodeGroups.control_plane_default.zone' constellation-conf.yaml)\"
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instance_type = \"$(yq '.nodeGroups.control_plane_default.instanceType' constellation-conf.yaml)\"
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disk_size = \"$(yq '.nodeGroups.control_plane_default.stateDiskSizeGB' constellation-conf.yaml)\"
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disk_type = \"$(yq '.nodeGroups.control_plane_default.stateDiskType' constellation-conf.yaml)\"
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initial_count = \"$(yq '.nodeGroups.control_plane_default.initialCount' constellation-conf.yaml)\"
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}
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worker_default = {
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role = \"$(yq '.nodeGroups.worker_default.role' constellation-conf.yaml)\"
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zone = \"$(yq '.nodeGroups.worker_default.zone' constellation-conf.yaml)\"
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instance_type = \"$(yq '.nodeGroups.worker_default.instanceType' constellation-conf.yaml)\"
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disk_size = \"$(yq '.nodeGroups.worker_default.stateDiskSizeGB' constellation-conf.yaml)\"
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disk_type = \"$(yq '.nodeGroups.worker_default.stateDiskType' constellation-conf.yaml)\"
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initial_count = \"$(yq '.nodeGroups.worker_default.initialCount' constellation-conf.yaml)\"
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}
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}" >> terraform.tfvars
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echo "project = \"$(yq '.provider.gcp.project' constellation-conf.yaml)\"" >> terraform.tfvars
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echo "region = \"$(yq '.provider.gcp.region' constellation-conf.yaml)\"" >> terraform.tfvars
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echo "zone = \"$(yq '.provider.gcp.zone' constellation-conf.yaml)\"" >> terraform.tfvars
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terraform fmt terraform.tfvars
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```
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</tabItem>
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</tabs>
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Initialize and apply Terraform to create the configured infrastructure:
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```bash
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terraform init
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terraform apply
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```
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The Constellation [apply step](#the-apply-step) requires the already created `constellation-config.yaml` and the `constellation-state.yaml`.
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Create the `constellation-state.yaml` using the output from the Terraform state and the `constellation-conf.yaml`:
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<tabs groupId="csp">
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<tabItem value="aws" label="AWS">
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```bash
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yq eval '.version ="v1"' --inplace constellation-state.yaml
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yq eval ".infrastructure.initSecret =\"$(terraform output initSecret | jq -r | tr -d '\n' | hexdump -ve '/1 "%02x"' && echo '')\"" --inplace constellation-state.yaml
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yq eval ".infrastructure.clusterEndpoint =\"$(terraform output out_of_cluster_endpoint | jq -r)\"" --inplace constellation-state.yaml
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yq eval ".infrastructure.inClusterEndpoint =\"$(terraform output in_cluster_endpoint | jq -r)\"" --inplace constellation-state.yaml
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yq eval ".infrastructure.ipCidrNode =\"$(terraform output ip_cidr_nodes | jq -r)\"" --inplace constellation-state.yaml
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yq eval ".infrastructure.uid =\"$(terraform output uid | jq -r)\"" --inplace constellation-state.yaml
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yq eval ".infrastructure.name =\"$(terraform output name | jq -r)\"" --inplace constellation-state.yaml
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yq eval ".infrastructure.apiServerCertSANs =$(terraform output -json api_server_cert_sans)" --inplace constellation-state.yaml
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```
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</tabItem>
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<tabItem value="azure" label="Azure">
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:::info
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If the enforcement policy is set to `MAAFallback` in `constellation-config.yaml`, a manual update to the MAA provider's policy is necessary.
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You can apply the update with the following commands, where `<VERSION>` is the version of Constellation that should be set up. (e.g. `v2.12.0`)
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```bash
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git clone --branch <VERSION> https://github.com/edgelesssys/constellation
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cd constellation/hack/maa-patch
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go run . $(terraform output attestationURL | jq -r)
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```
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:::
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```bash
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yq eval '.version ="v1"' --inplace constellation-state.yaml
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yq eval ".infrastructure.initSecret =\"$(terraform output initSecret | jq -r | tr -d '\n' | hexdump -ve '/1 "%02x"' && echo '')\"" --inplace constellation-state.yaml
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yq eval ".infrastructure.clusterEndpoint =\"$(terraform output out_of_cluster_endpoint | jq -r)\"" --inplace constellation-state.yaml
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yq eval ".infrastructure.inClusterEndpoint =\"$(terraform output in_cluster_endpoint | jq -r)\"" --inplace constellation-state.yaml
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yq eval ".infrastructure.ipCidrNode =\"$(terraform output ip_cidr_nodes | jq -r)\"" --inplace constellation-state.yaml
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yq eval ".infrastructure.uid =\"$(terraform output uid | jq -r)\"" --inplace constellation-state.yaml
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yq eval ".infrastructure.name =\"$(terraform output name | jq -r)\"" --inplace constellation-state.yaml
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yq eval ".infrastructure.apiServerCertSANs =$(terraform output -json api_server_cert_sans)" --inplace constellation-state.yaml
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yq eval ".infrastructure.azure.resourceGroup =\"$(terraform output resource_group | jq -r)\"" --inplace constellation-state.yaml
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yq eval ".infrastructure.azure.subscriptionID =\"$(terraform output subscription_id | jq -r)\"" --inplace constellation-state.yaml
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yq eval ".infrastructure.azure.networkSecurityGroupName =\"$(terraform output network_security_group_name | jq -r)\"" --inplace constellation-state.yaml
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yq eval ".infrastructure.azure.loadBalancerName =\"$(terraform output loadbalancer_name | jq -r)\"" --inplace constellation-state.yaml
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yq eval ".infrastructure.azure.userAssignedIdentity =\"$(terraform output user_assigned_identity_client_id | jq -r)\"" --inplace constellation-state.yaml
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yq eval ".infrastructure.azure.attestationURL =\"$(terraform output attestationURL | jq -r)\"" --inplace constellation-state.yaml
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```
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</tabItem>
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<tabItem value="gcp" label="GCP">
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```bash
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yq eval '.version ="v1"' --inplace constellation-state.yaml
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yq eval ".infrastructure.initSecret =\"$(terraform output initSecret | jq -r | tr -d '\n' | hexdump -ve '/1 "%02x"' && echo '')\"" --inplace constellation-state.yaml
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yq eval ".infrastructure.clusterEndpoint =\"$(terraform output out_of_cluster_endpoint | jq -r)\"" --inplace constellation-state.yaml
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yq eval ".infrastructure.inClusterEndpoint =\"$(terraform output in_cluster_endpoint | jq -r)\"" --inplace constellation-state.yaml
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yq eval ".infrastructure.ipCidrNode =\"$(terraform output ip_cidr_nodes | jq -r)\"" --inplace constellation-state.yaml
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yq eval ".infrastructure.uid =\"$(terraform output uid | jq -r)\"" --inplace constellation-state.yaml
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yq eval ".infrastructure.name =\"$(terraform output name | jq -r)\"" --inplace constellation-state.yaml
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yq eval ".infrastructure.apiServerCertSANs =$(terraform output -json api_server_cert_sans)" --inplace constellation-state.yaml
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yq eval ".infrastructure.gcp.projectID =\"$(terraform output project | jq -r)\"" --inplace constellation-state.yaml
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yq eval ".infrastructure.gcp.ipCidrPod =\"$(terraform output ip_cidr_pods | jq -r)\"" --inplace constellation-state.yaml
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```
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</tabItem>
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</tabs>
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</tabItem>
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<tabItem value="self-managed" label="Self-managed">
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Self-managed infrastructure allows for managing the cloud resources necessary for a Constellation cluster separate from the Constellation CLI.
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Self-managed infrastructure allows for more flexibility in the setup, by separating the infrastructure setup from the Constellation cluster management.
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This provides flexibility in DevOps and can meet potential regulatory requirements.
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It's recommended to use Terraform for infrastructure management, but you can use any tool of your choice.
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To self-manage the infrastructure of your cluster, download the Terraform files for the selected CSP from the [Constellation GitHub repository](https://github.com/edgelesssys/constellation/tree/main/terraform/infrastructure).
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They contain a minimum configuration for the resources necessary to run a Constellation cluster on the corresponding CSP. From this base, you can now add, edit, or substitute resources per your own requirements with the infrastructure
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:::info
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When using Terraform, you can use the [Terraform module](./terraform-module.md) for ease of use to manage the entire Constellation cluster.
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:::
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You can refer to the Terraform files for the selected CSP from the [Constellation GitHub repository](https://github.com/edgelesssys/constellation/tree/main/terraform/infrastructure) for a minimum Constellation cluster configuration. From this base, you can now add, edit, or substitute resources per your own requirements with the infrastructure
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management tooling of your choice. You need to keep the essential functionality of the base configuration in order for your cluster to function correctly.
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<!-- vale off -->
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@ -266,7 +68,7 @@ management tooling of your choice. You need to keep the essential functionality
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Make sure all necessary resources are created, e.g., through checking your CSP's portal and retrieve the necessary values, aligned with the outputs (specified in `outputs.tf`) of the base configuration.
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Fill these outputs into the corresponding fields of the `constellation-state.yaml` file. For example, fill the IP or DNS name your cluster can be reached at into the `.Infrastructure.ClusterEndpoint` field.
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Fill these outputs into the corresponding fields of the `Infrastructure` block inside the `constellation-state.yaml` file. For example, fill the IP or DNS name your cluster can be reached at into the `.Infrastructure.ClusterEndpoint` field.
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Continue with [initializing your cluster](#the-apply-step).
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151
docs/docs/workflows/terraform-module.md
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151
docs/docs/workflows/terraform-module.md
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@ -0,0 +1,151 @@
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# Use the Terraform module
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You can manage a Constellation cluster through Terraform.
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The module package is available as part of the [GitHub release](https://github.com/edgelesssys/constellation/releases/). It consists of a convenience module for each cloud service provider (`{csp}-constellation`) that combines the IAM (`infrastructure/{csp}/iam`), infrastructure (`infrastructure/{csp}`), and constellation (`constellation-cluster`) modules.
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## Prerequisites
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- a Linux / Mac operating system
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- a Terraform installation of version `v1.4.4` or above
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## Quick setup
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The convenience module allows setting up a Constellation cluster with a single module. It's easiest to consume the module through a remote source, as shown below.
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This allows to upgrade the cluster to a newer Constellation version by simply updating the module source.
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:::caution
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In the current release of the module, `terraform apply` creates files such as `constellation-conf.yaml`, `constellation-state.yaml` , `constellation-admin.conf`, `constellation-mastersecret.json`, and a directory `constellation-terraform"` containing backups. Make sure to check in these files in your version control when using GitOps.
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The files are deleted on `terraform destroy`.
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:::
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1. Create a directory (workspace) for your Constellation cluster.
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```bash
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mkdir constellation-workspace
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cd constellation-workspace
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```
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1. Create a `main.tf` file to call the CSP specific Constellation module.
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<tabs groupId="csp">
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<tabItem value="azure" label="Azure">
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```
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module "azure-constellation" {
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source = "https://github.com/edgelesssys/constellation/releases/download/<version>/terraform-module.zip//terraform-module/azure-constellation" // replace <version> with a Constellation version, e.g., v2.13.0
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name = "constell"
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location = "northeurope"
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service_principal_name = "az-sp"
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resource_group_name = "constell-rg"
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node_groups = {
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control_plane_default = {
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role = "control-plane"
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instance_type = "Standard_DC4as_v5"
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disk_size = 30
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disk_type = "Premium_LRS"
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initial_count = 3
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},
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worker_default = {
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role = "worker"
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instance_type = "Standard_DC4as_v5"
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disk_size = 30
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disk_type = "Premium_LRS"
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initial_count = 2
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}
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}
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}
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```
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</tabItem>
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<tabItem value="aws" label="AWS">
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```
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module "aws-constellation" {
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source = "https://github.com/edgelesssys/constellation/releases/download/<version>/terraform-module.zip//terraform-module/aws-constellation" // replace <version> with a Constellation version, e.g., v2.13.0
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name = "constell"
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zone = "us-east-2c"
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name_prefix = "example"
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node_groups = {
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control_plane_default = {
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role = "control-plane"
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zone = "us-east-2c"
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instance_type = "m6a.xlarge"
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disk_size = 30
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disk_type = "gp3"
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initial_count = 3
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},
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worker_default = {
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role = "worker"
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zone = "us-east-2c"
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instance_type = "m6a.xlarge"
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disk_size = 30
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disk_type = "gp3"
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initial_count = 2
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}
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}
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}
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```
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</tabItem>
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||||
<tabItem value="gcp" label="GCP">
|
||||
|
||||
```
|
||||
module "gcp-constellation" {
|
||||
source = "https://github.com/edgelesssys/constellation/releases/download/<version>/terraform-module.zip//terraform-module/gcp-constellation" // replace <version> with a Constellation version, e.g., v2.13.0
|
||||
name = "constell"
|
||||
project = "constell-proj" // replace with your project id
|
||||
service_account_id = "constid"
|
||||
zone = "europe-west2-a"
|
||||
node_groups = {
|
||||
control_plane_default = {
|
||||
role = "control-plane"
|
||||
zone = "europe-west2-a"
|
||||
instance_type = "n2d-standard-4"
|
||||
disk_size = 30
|
||||
disk_type = "pd-ssd"
|
||||
initial_count = 3
|
||||
},
|
||||
worker_default = {
|
||||
role = "worker"
|
||||
zone = "europe-west2-a"
|
||||
instance_type = "n2d-standard-4"
|
||||
disk_size = 30
|
||||
disk_type = "pd-ssd"
|
||||
initial_count = 2
|
||||
}
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
</tabItem>
|
||||
</tabs>
|
||||
|
||||
3. Initialize and apply the module.
|
||||
```bash
|
||||
terraform init
|
||||
terraform apply
|
||||
```
|
||||
|
||||
## Custom setup
|
||||
If you need to separate IAM and cluster management or need custom infrastructure, you can also call the submodules individually.
|
||||
Look at the respective convenience module (`{csp}-constellation`) for how you can structure the module calls.
|
||||
The submodules are:
|
||||
- `constellation-cluster`: manages the Constellation cluster
|
||||
- `fetch-image`: translates the Constellation image version to the image ID of the cloud service provider
|
||||
- `infrastructure/{csp}`: contains the cluster infrastructure resources
|
||||
- `infrastructure/iam/{csp}`: contains the IAM resources used within the cluster
|
||||
|
||||
## Cluster upgrades
|
||||
:::tip
|
||||
For general information on cluster upgrades, see [Upgrade your cluster](./upgrade.md).
|
||||
:::
|
||||
|
||||
Using a [remote address as module source](https://developer.hashicorp.com/terraform/language/modules/sources#fetching-archives-over-http) as shown in [Quick setup](#quick-setup) is recommended because it simplifies the upgrade process. For [local paths as module source](https://developer.hashicorp.com/terraform/language/modules/sources#local-paths), you would need to manually overwrite the Terraform files in the Terraform workspace. The steps for the remote source setup are as follows:
|
||||
|
||||
1. Update the `<version>` variable inside the `source` field of the module.
|
||||
2. Upgrade the Terraform module and provider dependencies and apply the Constellation upgrade.
|
||||
```bash
|
||||
terraform init -upgrade
|
||||
terraform apply
|
||||
```
|
||||
@ -195,6 +195,11 @@ const sidebars = {
|
||||
label: 'Use persistent storage',
|
||||
id: 'workflows/storage',
|
||||
},
|
||||
{
|
||||
type: 'doc',
|
||||
label: 'Use the Terraform module',
|
||||
id: 'workflows/terraform-module',
|
||||
},
|
||||
// {
|
||||
// type: 'doc',
|
||||
// label: 'Use Azure trusted launch VMs',
|
||||
|
||||
Loading…
Reference in New Issue
Block a user