Part 1: Provision

In this exercise, you will focus on provisioning a GKE cluster in Google Cloud using the web console or the RCTL CLI.

What Will You Do¶

In this part, you will:

Create a new Project in your Org
Create a Cloud Credential
Provision an Google Cloud GKE cluster
Verify cluster health
Review available dashboards

Step 1: Create Project¶

In this step, we will create a new project which will serve as a logically isolated "operating environment" (sub tenant).

Note

Creating a project requires "Org Admin" privileges.

Create a new project called "gke"

New Project

Switch context to this project by clicking on the project in the web console

Step 2: Create Cloud Credential¶

Cloud credentials provide the controller with privileges to programmatically interact with your Google Cloud account so that it can manage the lifecycle of infrastructure associated with GKE clusters.

Follow the step-by-step instructions to setup Google Cloud and obtain the required credentials.
Follow the step-by-step instructions to create an GCP cloud credential on the controller.
Validate the newly created cloud credential to ensure it is configured correctly.

Validate Cloud Credential

Step 3: Configure & Provision Cluster¶

In this step, you will configure and customize your GCP GKE Cluster using either the web console or the RCTL CLI with a YAML based cluster specification.

Web ConsoleRCTL

Navigate to the previously created project in your Org
Select Infrastructure -> Clusters
Click "New Cluster"
Select "Create a New Cluster"
Click "Continue"

Create Cluster

Select "Public Cloud"
Select "GCP"
Select "GCP GKE"
Enter a cluster name
Click "Continue"

Create Cluster

Select the previously created "Cloud Credentials"
Enter the "GCP Project" ID where the cluster will be created
Select the "Zone" for the cluster
Select the K8S Version for the cluster
Select the "default-gke" blueprint

Create Cluster

Under the "Network Settings" section, change the "Cluster Privacy" to "Public"
Click "Save Changes"

Create Cluster

Click "Provision"

Provisioning in Process

Provisioning will take approximately 15 minutes to complete. The final step in the process is the blueprint sync for the default blueprint. This can take a few minutes to complete because this requires the download of several container images and deployment of monitoring and log aggregation components.

Save the below specification file to your computer as "gke-cluster-basic.yaml". Note, the highlighted sections in the spec will need to be updated to match your environment.

apiVersion: infra.k8smgmt.io/v2
kind: Cluster
metadata:
  labels:
    rafay.dev/clusterName: gke-get-started-cluster
    rafay.dev/clusterType: gke
  name: gke-get-started-cluster
  project: gke
spec:
  blueprint:
    name: default-gke
    version: latest
  cloudCredentials: GCP-CC
  config:
    controlPlaneVersion: "1.22"
    location:
      defaultNodeLocations:
      - us-west1-c
      type: zonal
      zone: us-west1-c
    name: gke-get-started-cluster
    network:
      enableVPCNativeTraffic: true
      maxPodsPerNode: 110
      name: default
      networkAccess:
        privacy: public
      nodeSubnetName: default
    nodePools:
    - machineConfig:
        bootDiskSize: 100
        bootDiskType: pd-standard
        imageType: COS_CONTAINERD
        machineType: e2-standard-4
      name: default-nodepool
      nodeVersion: "1.22"
      size: 3
    project: demos-249423
  type: Gke

Update the following sections of the specification file with details to match your environment

Update the clustername label section with the name of the cluster

    labels:
      rafay.dev/clusterName: gke-get-started-cluster

Update the name section with the name of the cluster to be created and the project section with the name of the Rafay project you previously created
```
    metadata:
      name: gke-get-started-cluster
      project: gke
```
Update the cloudCredentials section with the name of the cloud credential that was previously created
```
    cloudCredentials: GCP-CC
```
Update the control plane version section with the kubernetes version for the control plane
```
    controlPlaneVersion: "1.22"
```

Update the zone sections with the GCP zone where the cluster will be created

    defaultNodeLocations:
    - us-west1-c
    type: zonal
    zone: us-west1-c

Update the name section with the name of the cluster to be created
```
    name: gke-get-started-cluster
```
Update the node version section with the kubernetes version for the nodes
```
    nodeVersion: "1.22"
```
Update the project section with the ID of the GCP project
```
    project: demos-249423
```
Save the updates that were made to the file
Execute the following command to provision the cluster from the specification file previously saved
```
./rctl apply -f gke-cluster-basic.yaml
```
Login to the web console and click on the cluster name to view the cluster being provisioned

Create Cluster

Provisioning the infrastructure will take approximately 15 minutes to complete. The final step in the process is the blueprint sync for the default blueprint's add-ons. This can take a few minutes to complete because this requires the download and deployment of several container images associated add-ons.

Once the cluster finishes provisioning, download the cluster configuration file and compare it to the specification file used to create the cluster. The two files will match.

Go to Clusters -> Infrastructure.
Click on the Settings Icon for the newly created cluster and select "Download Cluster Config"

Step 4: Verify Cluster¶

Once provisioning is complete, you should have a ready to use GCP GKE Cluster. We will verify the cluster by checking its health and status.

Step 4a: Cluster Status & Health¶

The Kubernetes management operator automatically deployed on the cluster by the controller will "maintain a heartbeat" with the controller and will "proactively monitor" the status of the components on the worker node required for communication with the control plane and the controller.

Cluster Health

Step 4b : Zero Trust Kubectl¶

The controller provides a zero trust kubectl channel for authorized users.

Click the "Kubectl" button on the cluster card.
This will launch a web based kubectl shell for you to securely interact with the API server over a zero trust channel

ZTKA

Step 5: Dashboards¶

The default cluster blueprint automatically deploys Prometheus and related components required to monitor the GKE cluster. This data is aggregated from the cluster on the controller in a time series database. This data is then made available to administrators in the form of detailed dashboards.

Step 5a: Cluster Dashboard¶

Click on the cluster name to view the cluster dashboard. You will be presented with time series data for the following

Cluster Health
CPU Utilization
Memory Utilization
Storage Utilization
Number of Worker Nodes
Number of workloads and their status
Number of pods and their status

Cluster Dashboard

Step 5b: Node Dashboard¶

Click on the node tab and then select a node to view the node dashboard.

Node Dashboard

Step 5c: Kubernetes Resources¶

The dashboard also comes with an integrated Kubernetes dashboard.

Click on "Resources" tab and you will be presented with all the Kubernetes resources organized using a number of filters.

k8s Resources

Recap¶

Congratulations! At this point, you have

Successfully configured and provisioned a GCP GKE cluster
Used zero trust kubectl to securely access the GKE cluster's API server
Used the integrated cluster, node and k8s dashboards to monitor and view details about the cluster