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It takes a long time to run terraform and wait. So I would like to run it to exclude rds that takes the longest time to excute or I would like to run only ec2 resource. Is there a way to do such things in terraform?
393
When you want Terraform to ignore changes between subsequent apply commands you can use the lifecycle ignore_changes meta-argument. The ignore_changes argument means that Terraform will set the value when the resource is first deployed and then forever ignore any changes to it.
When you run terraform apply without passing a saved plan file, Terraform automatically creates a new execution plan as if you had run terraform plan , prompts you to approve that plan, and takes the indicated actions.
Terraform allows you to target specific resources when you plan, apply, or destroy your infrastructure. You can use Terraform's -target option to target specific resources, modules, or collections of resources.
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.
124
Adding to Julio's answer, you could target multiple resources in the following manner:
terraform init
terraform plan -target=resource_type1.resource_name1 -target=resource_type2.resource_name1
terraform apply -target=resource_type1.resource_name1 -target=resource_type2.resource_name1
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