consul_key_prefix

Allows Terraform to read values from a "namespace" of Consul keys that share a common name prefix.

Example Usage

data "consul_key_prefix" "app" {
  datacenter = "nyc1"
  token      = "abcd"

  # Prefix to add to prepend to all of the subkey names below.
  path_prefix = "myapp/config/"

  # Read the ami subkey
  subkey {
    name    = "ami"
    path    = "app/launch_ami"
    default = "ami-1234"
  }
}

# Start our instance with the dynamic ami value
resource "aws_instance" "app" {
  ami = "${data.consul_key_prefix.app.var.ami}"

  # ...
}

data "consul_key_prefix" "web" {
  datacenter = "nyc1"
  token      = "efgh"

  # Prefix to add to prepend to all of the subkey names below.
  path_prefix = "myapp/config/"
}

# Start our instance with the dynamic ami value
resource "aws_instance" "web" {
  ami = "${data.consul_key_prefix.web["app/launch_ami"]}"

  # ...
}

Argument Reference

The following arguments are supported:

• datacenter - (Optional) The datacenter to use. This overrides the datacenter in the provider setup and the agent's default datacenter.

• token - (Optional) The ACL token to use. This overrides the token that the agent provides by default.

• path_prefix - (Required) Specifies the common prefix shared by all keys that will be read by this data source instance. In most cases, this will end with a slash to read a "folder" of subkeys.

• subkey - (Optional) Specifies a subkey in Consul to be read. Supported values documented below. Multiple blocks supported.

The subkey block supports the following:

• name - (Required) This is the name of the key. This value of the key is exposed as var.<name>. This is not the path of the subkey in Consul.

• path - (Required) This is the subkey path in Consul (which will be appended to the given path_prefix) to construct the full key that will be used to read the value.

• default - (Optional) This is the default value to set for var.<name> if the key does not exist in Consul. Defaults to an empty string.

Attributes Reference

The following attributes are exported:

• datacenter - The datacenter the keys are being read from.
• path_prefix - the common prefix shared by all keys being read.
• var.<name> - For each name given, the corresponding attribute has the value of the key.
• subkeys - A map of the subkeys and values is set if no subkey block is provided.