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Using Terraform 0.7.7.
I have a simple Terraform file with the following:
provider "aws" {
access_key = "${var.access_key}"
secret_key = "${var.secret_key}"
region = "${var.region}"
}
resource "aws_instance" "personal" {
ami = "${lookup(var.amis, var.region)}"
instance_type = "t2.micro"
}
resource "aws_eip" "ip" {
instance = "${aws_instance.personal.id}"
}
resource "aws_key_pair" "personal" {
key_name = "mschuchard-us-east"
public_key = "${var.public_key}"
}
Terraform apply yields the following error:
aws_key_pair.personal: Creating...
fingerprint: "" => "<computed>"
key_name: "" => "mschuchard-us-east"
public_key: "" => "ssh-rsa pubkey hash mschuchard-us-east"
aws_instance.personal: Creating...
ami: "" => "ami-c481fad3"
availability_zone: "" => "<computed>"
ebs_block_device.#: "" => "<computed>"
ephemeral_block_device.#: "" => "<computed>"
instance_state: "" => "<computed>"
instance_type: "" => "t2.micro"
key_name: "" => "<computed>"
network_interface_id: "" => "<computed>"
placement_group: "" => "<computed>"
private_dns: "" => "<computed>"
private_ip: "" => "<computed>"
public_dns: "" => "<computed>"
public_ip: "" => "<computed>"
root_block_device.#: "" => "<computed>"
security_groups.#: "" => "<computed>"
source_dest_check: "" => "true"
subnet_id: "" => "<computed>"
tenancy: "" => "<computed>"
vpc_security_group_ids.#: "" => "<computed>"
aws_instance.personal: Creation complete
aws_eip.ip: Creating...
allocation_id: "" => "<computed>"
association_id: "" => "<computed>"
domain: "" => "<computed>"
instance: "" => "i-0ab94b58b0089697d"
network_interface: "" => "<computed>"
private_ip: "" => "<computed>"
public_ip: "" => "<computed>"
vpc: "" => "<computed>"
aws_eip.ip: Creation complete
Error applying plan:
1 error(s) occurred:
* aws_key_pair.personal: Error import KeyPair: InvalidKeyPair.Duplicate: The keypair 'mschuchard-us-east' already exists.
status code: 400, request id: 51950b9a-55e8-4901-bf35-4d2be234abbf
The only help I found with googling was to blow away the *.tfstate files, which I tried and that did not help. I can launch an EC2 instance with the gui with this key pair and easily ssh into it, but Terraform is erroring when trying to use the same fully functional keypair.
430
If you want to attach a key to an EC2 instance while you create it using terraform, you need to first create a key on AWS console, download the . pem file and copy the Key pair name to the clip board. Terraform script requires the correct key name to associate it to the ec2 instance.
To add or replace a key pairConnect to your instance using your existing private key. Using a text editor of your choice, open the . ssh/authorized_keys file on the instance. Paste the public key information from your new key pair underneath the existing public key information.
key_name - (Optional) The name for the key pair. If neither key_name nor key_name_prefix is provided, Terraform will create a unique key name using the prefix terraform- . key_name_prefix - (Optional) Creates a unique name beginning with the specified prefix.
Create a main.tf and add the Terraform block with the TLS and Linode providers defined and configured. Now we need to add a tls_private_key resource to generate our SSH key. We will set the algorithm to RSA and the rsa_bits property to 4096, so we generate a suitable key. Great, we will now have a key generated.
The error is telling you that the keypair already exists in your AWS account but Terraform has no knowledge of it in its state files so is attempting to create it each time.
You have two options available to you here. Firstly, you could simply delete it from the AWS account and allow Terraform to upload it and thus allow it to be managed by Terraform and be in its state files.
Alternatively you could use the Terraform import command to import the pre-existing resource into your state file:
terraform import aws_key_pair.personal mschuchard-us-east
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