Terraform Workspaces
Generally when we write terraform configuration, we would like to create multiple environments such as
Developer
System Test
Performance Test
Staging
Production
For all the environments our infrastructure is same, the arguments might differ, There might be some additional resources in some environments
To handle this we would not creat multiple copies of infrastructure and create different backend configurations.
To deal with single template and multi environments terraform introduced a concept called workspaces. Refer Here for the official docs
Now lets explore terraform workspace cli
Lets try to create two workspaces
ST => System Test
UAT => Staging
Refer Here for some of the changes done Refer Here for the fixes done to the output variableSelect the current workspace as ST
terraform workspace select ST
terraform apply -var-file="env/ST.tfvars"
Now lets select the current workspace as UAT
terraform workspace select UAT
terraform apply -var-file="env/UAT.tfvars"
Refer Here for some of the changes done to accomodate multi environmentsTo set the current workspace we are using terraform workspace select, the other way of doing SET TF_WORKSPACE to the active environment
Other environmental variables of terraform Refer Here
Exercise: Try to create all the tag with with env-<name>
tags = {
Name = format("%s-WebSg", terraform.workspace),
Env = terraform.workspace
}
From CI/CD Engines when we need manage Terraform infra creation. From the Jenkins/Azure DevOps pipelines, You will have an agent/node where terraform is installed and credentials configured/passed
# if the terraform code is available in some git try to configure the git to clone
terraform init
terraform workspace select <build-parameter>
terraform apply -var-file=<varfile> -auto-approve
Next Steps:
Reusable Templates => Modules => Registry
Creating a Module and using community module
