About

Build the Q Coordination Engine (or qbox) and the Istio BookInfo application on top of GKE.

Prerequisites

• Terraform 0.12 or later. If not installed, I strongly recommend using tfswitch (which can be installed here) to install and move between Terraform versions.

• A working kubectl. Follow these instructions to set up kubectl locally if not set.

• The third-party kubectl Terraform provider. Unfortunately, the standard Kubernetes provider does not currently support applying arbitrary YAMLs. This means we cannot apply CRDs or other resources through that provider. So we're using this one instead.

• gcloud installed locally. Follow these instructions to install gcloud for your platform.

• make installed locally. This is so that you can run commands from the Makefile as needed.

• A service account key generated from Google Cloud for the project stored on your machine somewhere. This is necessary so that you can use gcloud to connect to GCP. If you don't have a service account, follow these instructions. If you need to generate a key for an existing service account, follow these instructions to generate and download.

• A Terraform cloud storage bucket that you have access to. This is used to store Terraform state remotely so that teams can work together on the same resources. A bucket called tfstate-backend has already been created for you, and Terraform has already been configured to use it for state in this repo. If it is ever deleted, please create a new bucket and update terraform-backend.tf accordingly.

• A variable file called values.tfvars at the top-level of this repository. The following is a template, please replace the values:

service_account_key_path = "<full path to the service account key JSON file you generated as a prereq>"
password = "<Kubernetes API password for use with kubectl; consult with other team member for this value>"

Instructions

Run command:

python3.7 DAG-parser.py DAG.json values.tfvars

This generates the manifest and all the configmaps needed according to the DAG specified in DAG.json.

• Run make build to build a new cluster and deploy your YAML files.
• Run make destroy to teardown the cluster and all YAMLs running on it.
• Run make show to inspect the current state of the Terraform resources (YAMLs and GKE cluster)