Setup - Google Cloud

Setting up a Kubernetes Cluster with GCP (GKE)

Deploy a Kubernetes cluster in GCP using GKE service.

Requirements

1. GCP account

2. gcloud and GCP credentials configured

3. kubectl

LINUX/MAC is the preferred method of setup.

Windows should choose either:

1. Deploy a THORNode from a Linux VPS.

2. Use Windows Subsystem for Linux - https://docs.microsoft.com/en-us/windows/wsl/about****

Steps

Firstly, clone and enter the cluster-launcher repository. All commands in this section are to be run inside this repo.

git clone https://gitlab.com/thorchain/devops/cluster-launcher
cd cluster-launcher

Then install the terraform CLI:

LINUX/MAC

Install Terraform:

brew install terraform

gcloud CLI

The gcloud CLI allows you to manage your GCP services.

LINUX/MAC

Use the package manager homebrew to install the GCP CLI.

brew install google-cloud-sdk

After the installation perform the steps outlined below. This will authorize the SDK to access GCP using your user account credentials and add the SDK to your PATH. It requires you to login and select the project you want to work in. Then add your account to the Application Default Credentials (ADC). This will allow Terraform to access these credentials to provision resources on GCP. Finally, you need to enable the Compute Engine and Kubernetes Engine API services for your GCP project.

gcloud init
gcloud auth application-default login
gcloud services enable compute.googleapis.com
gcloud services enable container.googleapis.com

You will be asked for you Personal Access Token with read/write priveleges (retrieve from API Panel from the GCP web console.)

API -> Tokens/Keys -> Create Token.

Make sure you handle your secrets securely!

Kubernetes Control Tool

You must install and configure the Kubernetes CLI tool (kubectl). **To install kubectl** , follow these instructions, or choose a package manager based on your operating system.

LINUX/MAC

Use the package manager homebrew to install kubectl.

brew install kubernetes-cli

wget && jq

You also need wget and jq, follow these instructions, or choose a package manager based on your operating system.

LINUX/MAC

Use the package manager homebrew to install wget and jq Note: You most likely have these installed already.

brew install wget
brew install jq

Deploy Kubernetes Cluster

Use the commands below to deploy an GKE cluster:

make gcp

During the deploy, you will be asked to enter information about your cluster:

var.project_id
  Project ID

  Enter a value: tc-k8s-123456

var.zone
  GCP zone in region

  Enter a value: us-east1-d

• Project ID

• Zone -- gcloud compute zones list

• Confirm yes

Deploying a cluster takes ~15 minutes

CONFIGURE

Now that you've provisioned your GKE cluster, you need to configure kubectl. The following command will get the access credentials for your cluster and automatically configure kubectl.

(cd gcp && gcloud container clusters get-credentials $(terraform output cluster_name) --zone $(terraform output zone))

This replaces the existing configuration at ~/.kube/config.

Once done, you can check if your cluster is responding correctly by running the following commands.

kubectl version
kubectl get nodes

You are now ready to deploy a THORNode.