How do I Execute Terraform Actions Without the Interactive Prompt?
terraform apply -auto-approve https://www.terraform.io/docs/commands/apply.html#auto-approve
terraform
Upgrade Terraform version
If you use Homebrew on MacOS already, you can install Terraform simply by $ brew install terraform and upgrade by $ brew upgrade terraform In fact, you might be interested in letting Homebrew also control other tools: $ brew install awscli $ brew install packer $ brew cask install docker $ brew cask install virtualbox … Read more
Different environments for Terraform (Hashicorp)
I suggest you take a look at the hashicorp best-practices repo, which has quite a nice setup for dealing with different environments (similar to what James Woolfenden suggested). We’re using a similar setup, and it works quite nicely. However, this best-practices repo assumes you’re using Atlas, which we’re not. We’ve created quite an elaborate Rakefile, … Read more
Terraform: modules + output from for_each
[*] The [*] and .* operators are intended for use with lists only. Because this resource uses for_each rather than count, its value in other expressions is a map, not a list. To make your configuration work you’ll need to decide whether it’s better to return a map of names where the keys are the … Read more
Terraform – refactoring modules: Error: Provider configuration not present
As the error message explains, Terraform has detected that there are resource objects still present in the state whose provider configurations are not available, and so it doesn’t have enough information to destroy those resources. In this particular case, that seems to be occurring because there is a provider configuration block in one of your … Read more
How do you do simple string concatenation in Terraform?
I know this was already answered, but I wanted to share my favorite: format(“%s/%s”,var.string,”string2″) Real world example: locals { documents_path = “${var.documents_path == “” ? format(“%s/%s”,path.module,”documents”) : var.documents_path}” } More info: https://www.terraform.io/docs/configuration/functions/format.html
I would like to run terraform only for a specific resource
You can use -target=resource like this: terraform plan -target=module.mymodule.aws_instance.myinstance terraform apply -target=module.mymodule.aws_instance.myinstance or terraform plan -target=aws_instance.myinstance terraform apply -target=aws_instance.myinstance Disclaimer: Before downvoting the answer, please note that he actually asked to either “exclude” or “run only ec2 resource”. And after all this time the exclude feature request is still open in the terraform repo.
Terraform: Conditional creation of a resource based on a variable in .tfvars
Add a count parameter with a ternary conditional using the variable declared in .tfvars like this: resource “cloudflare_record” “record” { count = var.cloudflare ? 1 : 0 zone_id = “${data.cloudflare_zones.domain.zones[0].id}” name = “${var.subdomain}” value = “${var.origin_server}” type = “CNAME” ttl = 1 proxied = true } In this example var.cloudflare is a boolean declared in … Read more
Should .terraform.lock.hcl be included in the .gitignore file?
Per the Terraform documentation on the Dependency Lock File: Terraform automatically creates or updates the dependency lock file each time you run the terraform init command. You should include this file in your version control repository so that you can discuss potential changes to your external dependencies via code review, just as you would discuss … Read more