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Part 2: Blueprint

What Will You Do

In this part of the self-paced exercise, you will create a custom cluster blueprint with a Cluster Autoscaler add-on, based on declarative specifications.

Step 1: Create Repository

In this step, you will create a repository in your project so that the controller can retrieve the Helm charts automatically.

  • Open Terminal (on macOS/Linux) or Command Prompt (Windows) and navigate to the folder where you forked the Git repository
  • Navigate to the folder "/getstarted/autoscaler/repository"

The "autoscaler-repository.yaml" file contains the declarative specification for the repository. In this case, the specification is of type "Helm Repository" and the "endpoint" is pointing to the Kubernetes Github repository that includes the Autoscaler Helm chart.

apiVersion: config.rafay.dev/v2
kind: Repository
metadata:
  name: autoscaler-repo
spec:
  repositoryType: HelmRepository
  endpoint:  https://kubernetes.github.io/autoscaler
  credentialType: CredentialTypeNotSet

Type the command below

rctl create repository -f autoscaler-repository.yaml

If you did not encounter any errors, you can optionally verify if everything was created correctly on the controller.

  • Navigate to the "defaultproject" project in your Org
  • Select Integrations -> Repositories

Repository

Step 2: Create Namespace

In this step, you will create a namespace for the Cluster Autoscaler. The "autoscaler-namespace.yaml" file contains the declarative specification

The following items may need to be updated/customized if you made changes to these or used alternate names.

  • value: autoscaler-cluster
kind: ManagedNamespace
apiVersion: config.rafay.dev/v2
metadata:
  name: autoscaler
  description: namespace for cluster autoscaler
  labels:
  annotations:
spec:
  type: RafayWizard
  resourceQuota:
  placement:
    placementType: ClusterSpecific
    clusterLabels:
    - key: rafay.dev/clusterName
      value: autoscaler-cluster
  • Open Terminal (on macOS/Linux) or Command Prompt (Windows) and navigate to the folder where you forked the Git repository
  • Navigate to the folder "/getstarted/autoscaler/namespace"
  • Type the command below
rctl create namespace -f autoscaler-namespace.yaml

If you did not encounter any errors, you can optionally verify if everything was created correctly on the controller.

  • Navigate to the "defaultproject" project in your Org
  • Select Infrastructure -> Namespaces
  • You should see an namesapce called "autoscaler"

Autoscaler Namespace

Step 3: Create Addon

In this step, you will create a custom addon for the Cluster Autoscaler. The "autoscaler-addon.yaml" file contains the declarative specification

If you plan to use a different name or AWS region for the cluster other than "autoscaler-cluster" and "us-west-1", you must update the "custom-values.yaml" file located in the folder "/getstarted/autoscaler/addon" with the name of the cluster or region

The following details are used to build the declarative specification.

  • "v1" because this is our first version
  • The addon is part of the "defaultproject"
  • Name of addon is "autoscaler-addon"
  • The addon will be deployed to a namespace called "autoscaler"
  • You will be using a "custom-values.yaml" as an override which is located in the folder "/getstarted/autoscaler/addon"
  • The "cluster-autoscaler" chart will be used from the previously created repository named "autoscaler-repo"

The following items may need to be updated/customized if you made changes to these or used alternate names.

  • repository_ref: "autoscaler-repo"
kind: AddonVersion
metadata:
  name: v1
  project: defaultproject
spec:
  addon: autoscaler-addon
  namespace: autoscaler
  template:
    type: Helm3
    valuesFile: custom-values.yaml
    repository_ref: autoscaler-repo
    repo_artifact_meta:
      helm:
       chartName: cluster-autoscaler
  • Open Terminal (on macOS/Linux) or Command Prompt (Windows) and navigate to the folder where you forked the Git repository
  • Navigate to the folder "/getstarted/autoscaler/addon"
  • Type the command below
rctl create addon version -f autoscaler-addon.yaml

If you did not encounter any errors, you can optionally verify if everything was created correctly on the controller.

  • Navigate to the "defaultproject" project in your Org
  • Select Infrastructure -> Addons
  • You should see an addon called "autoscaler-addon"

Autoscaler Addon

Step 4: Create Blueprint

In this step, you will create a custom cluster blueprint with the Cluster Autoscaler addon. The "autoscaler-blueprint.yaml" file contains the declarative specification.

  • Open Terminal (on macOS/Linux) or Command Prompt (Windows) and navigate to the folder where you forked the Git repository
  • Navigate to the folder "/getstarted/autoscaler/blueprint"

The following items may need to be updated/customized if you made changes to these or used alternate names.

  • project: "defaultproject"
kind: Blueprint
metadata:
  # blueprint name
  name: autoscaler-blueprint
  #project name
  project: defaultproject
  • Type the command below
rctl create blueprint -f autoscaler-blueprint.yaml

If you did not encounter any errors, you can optionally verify if everything was created correctly on the controller.

  • Navigate to the "defaultproject" project in your Org
  • Select Infrastructure -> Blueprint
  • You should see an blueprint called "autoscaler-blueprint

Autoscaler Blueprint

New Version

Although we have a custom blueprint, we have not provided any details on what it comprises. In this step, you will create and add a new version to the custom blueprint. The YAML below is a declarative spec for the new version.

The following items may need to be updated/customized if you made changes to these or used alternate names.

  • project: "defaultproject"
  • blueprint: "autoscaler-blueprint"
  • name: "autoscaler-addon"
  • version: "v1"
kind: BlueprintVersion
metadata:
  name: v1
  project: defaultproject
  description: Autoscaler
spec:
  blueprint: autoscaler-blueprint
  baseSystemBlueprint: default
  baseSystemBlueprintVersion: ""
  addons:
    - name: autoscaler-addon
      version: v1
  # cluster-scoped or namespace-scoped
  pspScope: cluster-scoped
  rafayIngress: true
  rafayMonitoringAndAlerting: true
  # BlockAndNotify or DetectAndNotify
  driftAction: BlockAndNotify
  • Type the command below to add a new version
rctl create blueprint version -f autoscaler-blueprint-v1.yaml

If you did not encounter any errors, you can optionally verify if everything was created correctly on the controller.

  • Navigate to the "defaultproject" project in your Org
  • Select Infrastructure -> Blueprint
  • Click on the "autoscaler-blueprint" custom cluster blueprint

v1 Autoscaler Blueprint

Recap

As of this step, you have created a "cluster blueprint" with Cluster Autoscaler as one of the addons. You are now ready to move onto the next step where you will provision an EKS cluster with this custom cluster blueprint.