terraform-provisioner-chefsolo

README

Terraform Provisioner Chef Solo

Usage

Chef solo provisioner allows you to run chef with local mode but still being able to discover other nodes provisioned by chef.

It is designed to interact closely with the chef solo data-source.

Required attributes for using chefsolo provisioner are :

chef_module_path : The path to the module / cookbook / policy you want to run on your machine.

output_dir : Where all the generated files by the provisioner should be output

nodes : An array of Node JSON files, chef will use them in order to discover nodes during provisioning ( these can be very easily generated by the chefsolo datasource )

target_node: A DNA JSON file, this is the DNA that will be applied to your machine.

instance_id: The node ID you want to target during chef run (must match with the targeted node)

A very minimal configuration would be :

provisioner "chefsolo" {
    "chef_module_path": "path/to/my/cookbook"
    "output_dir": "/tmp/output_tf"
    "nodes": ["${data.template_chefsolo.nodes.*.node}"]
    "target_node": "${data.template_chefsolo.nodes.*.dna}"
    "instance_id": "my_id"
}

Other options will soon be documented too.

Example of usage with terraform provider chef solo :

data "template_chef_solo" "consul_server" {

  count = "${length(var.instances_ips)}"

  automatic_attributes = "${file("${path.module}/attributes/master.tpl")}"
  node_id         = "${element(var.instances_hostnames, count.index)}"
  policy_name     = "consul_server"
  policy_group    = "local"
  environment     = "preprod"

  vars {
    node_ip     = "${element(var.instances_ips, count.index)}"
    node_id     = "${element(var.instances_hostnames, count.index)}"
    hosts       = "${jsonencode(zipmap(
                        var.instances_ips,
                        var.instances_hostnames)
                    )}"
  }
}

resource "null_resource" "provision_consul" {

  triggers {
    always = "${uuid()}"
  }

  count = "${length(var.instances_ips)}"

  connection {
    user        = "centos"
    private_key = "${file(var.ssh_key)}"
    host        = "${element(var.instances_ips, count.index)}"
  }

  provisioner "chef-solo" {

    use_sudo         = true
    nodes            = ["${data.template_chef_solo.consul_server.*.node}"]
    target_node      = "${element(data.template_chef_solo.consul_server.*.dna, count.index)}"
    environment      = "${element(data.template_chef_solo.consul_server.*.environment, count.index)}"
    use_policyfile   = "${element(data.template_chef_solo.consul_server.*.use_policyfile, count.index)}"
    instance_id      = "${element(data.template_chef_solo.consul_server.*.node_id, count.index)}"

    chef_module_path = "${path.module}/../.."
    output_dir       = "${path.module}/bump-chef"
    version          = "12.18.31"

  }
}