Load Test Terraform

This folder contains Terraform code and scripts to aid in performing load tests of Coder. It does the following:

Creates a GCP VPC.
Creates a CloudSQL instance with a global peering rule so it's accessible inside the VPC.
Creates a GKE cluster inside the VPC with separate nodegroups for Coder and workspaces.
Installs Coder in a new namespace, using the CloudSQL instance.

Usage

You must have an existing Google Cloud project available.

Create a file named override.tfvars with the following content, modifying as appropriate:

name = "some_unique_identifier"
project_id = "some_google_project_id"

Inspect vars.tf and override any other variables you deem necessary.
Run terraform init.
Run terraform plan -var-file=override.tfvars and inspect the output. If you are not satisfied, modify override.tfvars until you are.
Run terraform apply -var-file=override.tfvars. This will spin up a pre-configured environment and emit the Coder URL as an output.
Run coder_init.sh <coder_url> to setup an initial user and a pre-configured Kubernetes template. It will also download the Coder CLI from the Coder instance locally.
Do whatever you need to do with the Coder instance:

Note: To run Coder commands against the instance, you can use coder_shim.sh <command>. You don't need to run coder login yourself.
- To create workspaces, run ./coder_shim.sh scaletest create-workspaces --template="kubernetes" --count=N
- To generate workspace traffic, run ./coder_trafficgen.sh <name of loadtest from your Terraform vars>. This will keep running until you delete the pod coder-scaletest-workspace-traffic.
When you are finished, you can run terraform destroy -var-file=override.tfvars.