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--- software:truenas:ups [2023/11/23 00:28] – created rodolico
+++ software:truenas:ups [2023/11/23 00:34] – rodolico
@@ Line 1: / Line 1: @@
 ====== Setting up a UPS with TrueNAS ======
-Find UPS plugged into a USB port
+TrueNAS supports monitoring UPS' using the open source [[https://networkupstools.org/|Network UPS Tool]] (aka NUT). While they have done a good job of automating discovery, sometimes it is difficult to figure out which device is which when a UPS is plugged into a USB port.
+===== Find UPS plugged into a USB port =====
-usbconfig
+The command <code bash>usbconfig</code> is your friend here. In this real life case, I found the Cyberpower PR1500 plugged in at ugen0.4.
+<code>
 ugen0.4: <CyberPower Systems PR1500LCDRTXL2U> at usbus0, cfg=0 md=HOST spd=LOW (1.5Mbps) pwr=ON (50mA)
+</code>
+It is on bus 0, port 4, so look for the direct link to that. It will either be called ugen* or uhid* in /dev
-You found it. In my case, it is on bus 0, port 4, so look for the direct link to that. It will either be called ugen* or uhid* in /dev
+<code bash>ls -ablph /dev/ugen* ; ls -ablph /dev/uhid*</code>
-ls -ablph /dev/ugen* ; ls -ablph /dev/uhid*
+This shows all entries named ugen* or uhid*, with the link that it actually points to.
+<code>
 lrwxr-xr-x  1 root  wheel     9B Nov 18 17:55 /dev/ugen0.4 -> usb/0.4.0
+</code>
 Services, then Actions for UPS