constellation/docs/versioned_docs/version-2.3/getting-started/first-steps.md

First steps with Constellation

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, and have access to a cloud subscription.

:::tip If you don't have a cloud subscription, check out MiniConstellation, which lets you set up a local Constellation cluster using virtualization. :::

Create a cluster

1. Create the configuration file for your selected cloud provider.

   constellation config generate azure
   

   constellation config generate gcp
   

   constellation config generate aws
   

   This creates the file constellation-conf.yaml in your current working directory.

2. Fill in your cloud provider specific information.

   First you need to create an IAM configuration. The easiest way to do this is the following CLI command:

   constellation iam create azure --region=westus --resourceGroup=constellTest --servicePrincipal=spTest
   

   This command creates IAM configuration on the Azure region westus creating a new resource group constellTest and a new service principal spTest.

   Note that CVMs are currently only supported in a few regions, check Azure's products available by region. These are:

   • westus
   • eastus
   • northeurope
   • westeurope

   constellation iam create gcp --projectID=yourproject-12345 --zone=europe-west2-a --serviceAccountID=constell-test
   

   This command creates IAM configuration in the GCP project yourproject-12345 on the GCP zone europe-west2-a creating a new service account constell-test.

   Note that only regions offering CVMs of the N2D series are supported. You can find a list of all regions in Google's documentation, which you can filter by machine type N2D.

   constellation iam create aws --zone=eu-central-1a --prefix=constellTest
   

   This command creates IAM configuration for the AWS zone eu-central-1a using the prefix constellTest for all named resources being created.

   Constellation OS images are currently replicated to the following regions:

   • eu-central-1
   • us-east-2
   • ap-south-1

   If you require the OS image to be available in another region, let us know.

   You can find a list of all regions in AWS's documentation.

   Now, fill the output values of the command into the corresponding fields of the constellation-conf.yaml file.

   :::tip

   To learn how to delete your IAM configuration and to get more detailed information on the IAM process and the VM types supported by Constellation, see the Configuration workflow.

   :::

3. 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.

   :::

   constellation create --control-plane-nodes 1 --worker-nodes 2 -y
   

   This should give the following output:

   $ constellation create ...
   Your Constellation cluster was created successfully.
   

4. Initialize the cluster

   :::caution

   In this release of Constellation, initialization on Azure might be slow and might take up to 60 minutes to initialize all Kubernetes nodes. This has been fixed in later releases.

   :::

   constellation init
   

   This should give the following output:

   $ constellation init
   Your Constellation master secret was successfully written to ./constellation-mastersecret.json
   Initializing cluster ...
   Your Constellation cluster was successfully initialized.
   
   Constellation cluster identifier  g6iMP5wRU1b7mpOz2WEISlIYSfdAhB0oNaOg6XEwKFY=
   Kubernetes configuration          constellation-admin.conf
   
   You can now connect to your cluster by executing:
           export KUBECONFIG="$PWD/constellation-admin.conf"
   

   The cluster's identifier will be different in your output. Keep constellation-mastersecret.json somewhere safe. This will allow you to recover your cluster in case of a disaster.

   :::info

   Depending on your CSP and region, constellation init may take 10+ minutes to complete.

   :::

5. Configure kubectl

   export KUBECONFIG="$PWD/constellation-admin.conf"
   

Deploy a sample application

1. Deploy the emojivoto app

   kubectl apply -k github.com/BuoyantIO/emojivoto/kustomize/deployment
   

2. Expose the frontend service locally

   kubectl wait --for=condition=available --timeout=60s -n emojivoto --all deployments
   kubectl -n emojivoto port-forward svc/web-svc 8080:80 &
   curl http://localhost:8080
   kill %1
   

Terminate your cluster

constellation terminate

This should give the following output:

$ constellation terminate
You are about to terminate a Constellation cluster.
All of its associated resources will be DESTROYED.
This action is irreversible and ALL DATA WILL BE LOST.
Do you want to continue? [y/n]:

Confirm with y to terminate the cluster:

Terminating ...
Your Constellation cluster was terminated successfully.

Optionally, you can also delete your IAM resources.