job "prometheus-discovery" {
  datacenters = ["dc1"]


  namespace = "cluster"
  type = "service"
  update {
    max_parallel      = 1
    health_check      = "checks"
    min_healthy_time  = "10s"
    healthy_deadline  = "1m"
    progress_deadline = "2m"
    auto_revert       = true
    auto_promote      = true
    canary            = 1
    stagger           = "10s"
  }
  group "prometheus-discovery" {
    count = 2
    ephemeral_disk {
      size = 150
    }
    network {
      port "http" {
        to = 80
      }
    }

    task "nginx" {


      service {
        name = "prometheus-discovery"
        port = "http"
        provider = "nomad"


        check {
          name = "status endpoint"
          type     = "http"
          path     = "/ping"
          interval = "5s"
          timeout  = "1s"
          method   = "GET"
          header {
            User-Agent = ["Nomad"]
          }
        }
      }

      logs {
        max_files     = 10
        max_file_size = 1
      }

      driver = "docker"

      config {
        image = "nginx:stable-alpine"
        entrypoint = ["nginx", "-c", "/local/nginx.conf"]
        ports = ["http"]
        init = true
      }

      template {
        destination = "local/nginx.conf"
        env         = false
        change_mode = "restart"
        data        = <<-EOH
    daemon off;
    user nobody;
    worker_processes 1;

    events {
        use           epoll;
        worker_connections  128;
    }
    http {
        server {
            root /local/www;

            location /ping {
                default_type text/plain;
                return 200 "OK";
            }
        }
    }
EOH
      }

template {
        destination = "local/www/services.json"
        env         = false
        change_mode = "noop"
        data        = <<-EOH
{{- sprig_toPrettyJson nomadServices -}}
EOH
      }
      resources {
        cpu    = 100
        memory = 64
      }

    }

  }
}