example.nomad.tpl

job "${NOMAD_JOB_NAME}" {
  datacenters = ["dc1"]

  group "cache" {
    network {
      port "db" {
        to = 6379
      }
    }

    task "redis" {
      driver = "docker"

      config {
        image = "redis:3.2"

        ports = ["db"]
      }

      resources {
        cpu    = 500
        memory = 256
      }
    }
  }
}

generate_nomad_job.sh

#!/usr/bin/env bash

NOMAD_JOB_NAME=$(date +%s) envsubst < "$1" > example.nomad

main.tf

provider "nomad" {
  address = "http://localhost:4646"
}

resource "null_resource" "generate_nomad" {
  provisioner "local-exec" {
    command = "${path.root}/generate_nomad_job.sh example.nomad.tpl"
  }

  triggers = {
    config_hash = sha256(file("${path.root}/example.nomad"))
  }
}

data "local_file" "generated_nomad" {
  depends_on = [
    null_resource.generate_nomad
  ]

  filename = "${path.root}/example.nomad"
}

resource "nomad_job" "example" {
  jobspec                 = data.local_file.generated_nomad.content
  deregister_on_destroy   = true
  purge_on_destroy        = true
}