AlexBulankou / gke-acm-tf

Example of using Terraform to provision ACM features on GKE clusters

Example of using Terraform to provision ACM features on GKE clusters

1. Clone this repo

2. Set variables that will be used in multiple commands:

   FOLDER_ID = [FOLDER]
   BILLING_ACCOUNT = [BILLING_ACCOUNT]
   PROJECT_ID = [PROJECT_ID]

3. Create project:

   gcloud auth login
   gcloud projects create $PROJECT_ID --name=$PROJECT_ID --folder=$FOLDER_ID
   gcloud alpha billing projects link $PROJECT_ID --billing-account $BILLING_ACCOUNT
   gcloud config set project $PROJECT_ID

4. Enable multiple APIs on the Cloud Build project:

   gcloud services enable cloudbuild.googleapis.com \
                          compute.googleapis.com \
                          cloudresourcemanager.googleapis.com \
                          iam.googleapis.com \
                          container.googleapis.com \
                          gkehub.googleapis.com \
                          anthosconfigmanagement.googleapis.com \
                          sqladmin.googleapis.com

5. Create storage bucket that will be used to keep Terraform state:

   gsutil mb gs://${PROJECT_ID}-tfstate
   gsutil versioning set on gs://${PROJECT_ID}-tfstate # enable versioning to keep history

6. Initialize your csproot folder using Helm and customized values:

   helm template ./templates/wp-chart/ --set google.projectId=$PROJECT_ID --set google.namespace=service-a \
       > ./csproot/namespaces/service-a/wp.yaml
   helm template ./templates/config-sync-namespace/ --set google.projectId=$PROJECT_ID --set google.namespace=service-a \
       > ./csproot/namespaces/service-a/namespace.yaml
   helm template ./templates/configconnector/ --set google.projectId=$PROJECT_ID \
       > ./csproot/cluster/configconnector.yaml

7. Submit your changes to git.

8. Initialize Terraform with the backend in the specified bucket:

   cd deploy/
   gcloud auth application-default login
   terraform init -backend-config "bucket=$PROJECT_ID-tfstate"

9. Create cluster using terraform:

   # continue in /deploy directory
   terraform plan -var="project=$PROJECT_ID" \
                  -var="sync_repo=https://github.com/AlexBulankou/gke-acm-tf" \
                  -var="sync_branch=main" \
                  -var="policy_dir=csproot" \
                  -var="bucket=$PROJECT_ID-tfstate"
   
   terraform apply -var="project=$PROJECT_ID" \
                   -var="sync_repo=https://github.com/AlexBulankou/gke-acm-tf" \
                   -var="sync_branch=main" \
                   -var="policy_dir=csproot" \
                   -var="bucket=$PROJECT_ID-tfstate"

10. Validate that Wordpress instance was created

    gcloud container clusters get-credentials cluster-1 --region=us-central1-b
    kubectl get service wordpress-external -n=service-a
    ping [external-ip]