My solution:
├── main.tf
├── modules
│ ├── cluster1
│ │ ├── cluster1.tf
│ │ ├── main.tf
│ │ ├── output.tf
│ │ └── variables.tf
│ ├── cluster2
│ │ ├── cluster.tf
│ │ ├── main.tf
│ │ ├── output.tf
│ │ └── variables.tf
│ └── trafficmanager
│ ├── main.tf
│ ├── output.tf
│ ├── trafficmanager.tf
│ └── variables.tf
├── README.md
└── variables.tfin order for me to create a Azure k8s clusters, each cluster requires service principal id and secret. i would be very interested to see some examples on how how to pass environment variables containing service principal and secret to each cluster.
Terraform will read environment variables in the form of TF_VAR_name to find the value for a variable. For example, the TF_VAR_access_key variable can be set to set the access_key variable.
export TF_VAR_region=us-west-1 # normal string
export TF_VAR_alist='[1,2,3]' # array
export TF_VAR_amap='{ foo = "bar", baz = "qux" }' # mapPass module to terraform module
variable "region" {}
variable "alist" {}
variable "map" {}
module "test" {
source = "./module/testmodule" # module location
region = "${var.region}"
list = "${var.alist}"
map = "${var.map}"
}
you can specify variables in the module and pass information to them:
module.tf:
variable "hack" {}
variable "reference" {
"type" = "map"
}
variable "ports" {
"default" = [2379, 6443]
}
module invocation:
module "master" {
source = "./vmLoop"
vmName = "master"
reference = "${var.reference}"
hack = "${element(azurerm_subnet.subnets.*.id, 1)}"
}