Configure terraform to connect to IBM Cloud - ibm-cloud

Question

I try to connect terraform to IBM Cloud and I got messed up with
Softlayer and IBM Cloud credentials.
I followed the instruction on IBM sites to connect my terraform to the IBM Cloud and I am confused, because I may use SL and IBM Cloud connec-
tion information like API-keys etc.
I may not run terraform init and/or plan, because there are some
information missing. No I am asked for the organization (var.org).
Sometimes I got asked about the SL credentials. Our account started
in January 2019 and I am sure not to worked with SL at all and only
heard about API key from IBM cloud.
May some one have an example, how terraform.tfvars looks like to work
properly together with IBM Cloud Kubernetes Service, VPC and classic
infrastructure?
Thank you very much.
Jan

Answer 1

I recommend starting to take a look at these two tutorials, dealing with a LAMP stack on classic vertical servers and with Kubernetes and other services. Both provide step by step instructions and guide you through the process of setting up Terraform-based deployments.
They provide the necessary code in GitHub repos. For the Kubernetes sample credentials.tfvars you only need the API key:
ibmcloud_api_key = "your api key"

Answer 2

For the public_key a string containing the public key should be provided instead of a file that contains the key.
$ cat ~/.ssh/id_rsa.pub
ssh-rsa CCCde...
Then in terraform:
resource "ibm_compute_ssh_key" "test_ssh_key" {
public_key = "ssh-rsa CCCde..."
}
Alternatively you can use a key that you created earlier:
data "ibm_compute_ssh_key" "ssh_key" {
label = "yourexistingkey"
}
resource "ibm_compute_vm_instance" "onprem_vsi" {
ssh_key_ids = ["${data.ibm_compute_ssh_key.ssh_key.id}"]
}

Answer 3

Here is what you will need to run an init or plan for IBM Cloud Kubernetes Service clusters with terraform...
In your .tf file
terraform {
required_providers {
ibm = {
source = "IBM-Cloud/ibm"
}
}
}
provider "ibm" {
ibmcloud_api_key = var.ibmcloud_api_key
iaas_classic_username = var.classic_username
iaas_classic_api_key = var.classic_api_key
}
In your shell, set the following environment variables
export IBMCLOUD_API_KEY=<value of your IBM Cloud api key>
export CLASSIC_API_KEY=<Value of you r IBM Cloud classic (i.e. SL) api key>
export CLASSIC_USERNAME=<Value of your IBM Cloud classic username>
Run your init as follows:
terraform init
Run your plan as follows:
terraform plan \
-var ibmcloud_api_key="${IBMCLOUD_API_KEY}" \
-var classic_api_key="${CLASSIC_API_KEY}" \
-var classic_username="${CLASSIC_USERNAME}"