Add workers with matrix-synapse-next, various fixes and updates

hosts/voyager/services/fancontrol.nix

@@ -0,0 +1,63 @@
+{ config, lib, pkgs, ... }:
+{
+  systemd.timers."fancontrol" = {
+    wantedBy = [ "timers.target" ];
+    timerConfig = {
+      OnCalendar="*:0/3";
+      Unit = "fancontrol.service";
+    };
+  };
+
+  systemd.services."fancontrol" = {
+    environment = {
+      TEMP_MIN_FALLING = "50";
+      TEMP_MAX_RISING = "56";
+      TEMP_CRIT = "70";
+
+      LOW_FAN_SPEED = "0x10";
+    };
+
+    script = ''
+      SET_FAN_MANUAL="0x30 0x30 0x01 0x00" # Enable manual control
+      SET_FAN_AUTO="0x30 0x30 0x01 0x01" # Disable manual control
+
+      SET_FAN_LOW="0x30 0x30 0x02 0xff $LOW_FAN_SPEED"
+      SET_FAN_MAX="0x30 0x30 0x02 0xff 0x64" # force 100%
+
+
+      # Get all temperatures readings starting with "Temp ", find all two digit numbers followed by spaces, find the largest one, trim the trailing space
+      maxcoretemp=$(${pkgs.ipmitool}/bin/ipmitool sdr type temperature | grep '^Temp ' |  grep -Po '\d{2} ' | sort -nr | head -n1 | xargs)
+
+      # Verify that we read a valid number
+      ISNUMBER='^[0-9]+$'
+      if ! [[ $maxcoretemp =~ $ISNUMBER ]] ; then
+        echo "Error: could not read temperature" >&2
+        exit 2
+      fi
+
+      echo "Highest measured CPU temperature: '$maxcoretemp'"
+
+      if [ "$maxcoretemp" -gt "$TEMP_CRIT" ]; then
+        echo "TOO HOT, CRITICAL CPU TEMP"
+        ${pkgs.ipmitool}/bin/ipmitool raw $SET_FAN_MANUAL
+        ${pkgs.ipmitool}/bin/ipmitool raw $SET_FAN_MAX
+        exit 1
+      fi
+
+      if [ "$maxcoretemp" -gt "$TEMP_MAX_RISING" ]; then
+        echo "TOO HOT, switching to IDRAC fan controL"
+        ${pkgs.ipmitool}/bin/ipmitool raw $SET_FAN_AUTO
+        exit 0
+      fi
+
+      if [ "$maxcoretemp" -lt "$TEMP_MIN_FALLING" ]; then
+        echo "Sufficiently cooled, stepping down fans"
+        ${pkgs.ipmitool}/bin/ipmitool raw $SET_FAN_MANUAL
+        ${pkgs.ipmitool}/bin/ipmitool raw $SET_FAN_LOW
+        exit 0
+      fi
+
+      echo "Temperature is between limits, doing nothing..."
+    '';
+  };
+}