Nomad CDROM Plugin

Nomad Device Plugin to fingerprint optical drives listed in /proc/sys/dev/cdrom/info

Install

1. Download an appropriate artifact from Releases for the target platform

2. Unzip and move the plugin to the configured Nomad plugin_dir

   $ unzip nomad-device-cdrom_0.0.1_linux_amd64.zip
   Archive:  ./nomad-device-cdrom_act-build_linux_amd64.zip
   inflating: nomad-device-cdrom
   inflating: LICENSE
   
   ## With `plugin_dir = "/usr/local/libexec/nomad"`. Path will vary by Nomad configuration
   $ sudo mv nomad-device-cdrom /usr/local/libexec/nomad/cdrom
   

3. Configure plugin and restart Nomad client

Plugin Configuration

plugin "cdrom" {
  config {
    ## Allow up to 4 tasks to reserve generic/cdrom/readonly devices on this client
    readonly_seats = 4
  }
}

Task Usage

job "something" {
  group "stuff" {
    task "shared" {
      resources {
        device "generic/cdrom/readonly" {
          count = 1
        }
      }

      ...
    }

    task "exclusive" {
      resources {
        device "generic/cdrom/read_write" {
          count = 1
        }
      }
    }
  }
}