1 files changed, 81 insertions, 0 deletions
diff --git a/manifests/subsystem/sensors.pp b/manifests/subsystem/sensors.pp
new file mode 100644
index 0000000..caa99ef
--- /dev/null
+++ b/manifests/subsystem/sensors.pp
@@ -0,0 +1,81 @@
+class nodo::subsystem::sensors {
+  #
+  # SMART monitoring
+  #
+
+  $smartmontools = lookup('nodo::smartmontools', undef, undef, true)
+
+  if $smartmontools == true {
+    class { 'smartmontools': }
+  }
+
+  #
+  # LM Sensors
+  #
+
+  package { [
+    'lm-sensors',
+  ]:
+    ensure => present,
+  }
+
+  #
+  # hddtemp
+  #
+
+  # Deprecated in favor of drivetemp
+  # https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1002484
+  package { [
+    'hddtemp',
+  ]:
+    ensure => $::lsbdistcodename ? {
+      'wheezy'   => present,
+      'buster'   => present,
+      'bullseye' => present,
+      default  => absent,
+    }
+  }
+
+  #
+  # drivetemp
+  #
+  # References: https://www.baeldung.com/linux/hdd-ssd-temperature
+  #             https://askubuntu.com/questions/1426482/tool-to-monitor-hdd-temperature-in-ubuntu-server-22-04
+  #             https://wiki.archlinux.org/title/Lm_sensors#S.M.A.R.T._drive_temperature
+  #             https://github.com/philipl/drivetemp
+  #
+  # We'll implement drive temp module loading both for SysV and systemd based
+  # systems, to ensure this module is managed in either case.
+  #
+  # It also remains to be tested whether _both_ /etc/modules and /etc/modules-load.d
+  # are processed by recent systemd-based Debian systems; or if there are
+  # inconsistencies between the implementation and the documentation:
+  #
+  #   https://wiki.debian.org/Modules#Automatic_loading_of_modules
+  #
+  # Anyway, having this configuration in both places does not seem to hurt (much).
+  #
+  # Check also https://wiki.archlinux.org/title/Kernel_module#Automatic_module_loading
+  #            https://unix.stackexchange.com/questions/189670/whats-the-difference-of-etc-modules-load-d-and-etc-modules
+  #
+  # FIXME: this logic should be moved to a nodo::subsystem::modprobe::module definition.
+  #
+
+  $drivetemp = lookup('nodo::drivetemp', undef, undef, 'present')
+
+  # Drivetemp module loading for systems using SysV -- /etc/modules - modules(5)
+  file_line { 'etc-modules-drivetemp':
+    path   => "/etc/modules",
+    line   => "drivetemp",
+    ensure => $drivetemp,
+  }
+
+  # Drivetemp module loading using systemd's /etc/modules-load.d/ - modules-load.d(5)
+  file { '/etc/modules-load.d/drivetemp.conf':
+    ensure  => $drivetemp,
+    owner   => root,
+    group   => root,
+    mode    => '0644',
+    content => "drivetemp\n",
+  }
+}