# 
# module "node_exporter" {
#   source                 = "git::https://git.dalembert.upmc.fr/terraform/module_alpine_prometheus_node_exporter"
#   connection_ip          = var.eth0_ip
#   connection_private_key = file(var.pm_private_key)
#   node_exporter_version  = var.node_exporter_version
# }


resource "null_resource" "alpine_prometheus_node_exporter" {
  triggers = {
    source = filesha256("${path.module}/node_exporter.initd")
  }
  connection {
    type        = "ssh"
    user        = "root"
    host        = var.connection_ip
    private_key = var.connection_private_key
  }

  provisioner "file" {
    source      = "${path.module}/node_exporter.initd"
    destination = "/tmp/node_exporter.initd"
  }

  provisioner "remote-exec" {
    inline = [
      "echo '#--------------------------------'",
      "echo '# module prometheus_node_exporter'",
      "echo '#--------------------------------'",
      "wget -nc -q https://github.com/prometheus/node_exporter/releases/download/v${var.node_exporter_version}/node_exporter-${var.node_exporter_version}.linux-amd64.tar.gz",
      "tar xzf node_exporter-${var.node_exporter_version}.linux-amd64.tar.gz node_exporter-${var.node_exporter_version}.linux-amd64/node_exporter",
      "echo '# install node_exporter in /usr/sbin'",
      "install -Dm755 node_exporter-${var.node_exporter_version}.linux-amd64/node_exporter /usr/sbin",
      #
      "echo '# install service node_exporter'",
      "install -Dm755 /tmp/node_exporter.initd  /etc/init.d/node_exporter",
      #
      "echo '# enable service node_exporter'",
      "rc-update add node_exporter",
      "rc-service node_exporter start",
      #
      "echo '# clean'",
      "rm -rf node_exporter-${var.node_exporter_version}.linux-amd64.tar.gz node_exporter-${var.node_exporter_version}.linux-amd64",
      "echo '# module DONE'",
    ]
  }

}