Terraform Template for Digital Ocean Swarm with Storidge CIO

This repo contains a Terraform project for generating and managing clusters of DO droplets with the community edition of the Storidge CIO software.

The terraform code will look for a Digital Ocean image to launch the cloud instances. This image can be easily created by following the steps in the packer-cio repo.

Configuration

Default cluster configuration (can be altered in the variables.tf, droplets.tf, and volumes.tf files):

• 1 Swarm Master Node
  • 2GB droplet
  • 3 20GB storage drives
• 4 Swarm Worker Nodes
  • 2 GB droplets
  • 3 20GB storage drives on each worker
• Default cluster region: sfo2

Usage

Set-Up

Download Terraform

Download template into desired project repository:

git clone https://github.com/Storidge/terraform-do-swarm-cio.git

Initiate terraform:

terraform init

Add credentials file terraform.tfvars:

cd terraform-do-swarm-cio
cp terraform.tfvars.template terraform.tfvars

Add your DO API token and ssh key information to terraform.tfvars.

Update variables.tf with correct DO image and region.

To verify your configuration will work run:

terraform plan

Deploy cluster

If there are no errors, run the following command to build infrastructure:

terraform apply

Use the ssh key defined in terraform.tfvars to access the cluster.

Update state

Check current infrastructure state:

terraform show terraform.tfstate

If the infrastructure has been changed outside terraform, update the state information:

terraform refresh

Access droplets, images, and cluster through doctl CLI

Download and set up here

List all droplets:

doctl compute droplet list

List all images:

doctl compute image list

Locate master node public IP and ssh to it:

ssh root@public_IP

Scale cluster up/down

Under variables.tf, change the default value under variable "swarm_worker_count" (minimum 2):

variable "swarm_worker_count" {
  default = "4"
}

Apply terraform changes:

terraform init
...
terraform plan
...
terraform apply

Terminate cluster

To terminate the cluster run:

terraform destroy