add ups monitoring and data size monitoring to truenas docs

infrastructure/graduated/truenas/truenas.md

@@ -31,6 +31,8 @@
   - [Corrupted data](#corrupted-data)
   - [Stuck VMs](#stuck-vms)
   - [Mounting ZVOLS](#mounting-zvols)
+  - [UPS Monitoring](#ups-monitoring)
+  - [ZFS Size Data](#zfs-size-data)
 
 ## Bios settings
 
@@ -491,3 +493,35 @@ rsync --progress -av --delete -e ssh \
     kube:/opt/local-path-provisioner/ssd/pvc-4fca5cad-7640-45ea-946d-7a604a3ac875_minecraft_nimcraft/ \
     --dry-run
 ```
+
+## UPS Monitoring
+
+First, you'll need to create a user with access to the UPS in System -> Services -> UPS.
+Under the Extra Users section, add a user like so:
+
+```conf
+[admin]
+    password = mypass
+    actions = set
+    actions = fsd
+    instcmds = all
+```
+
+Then you can run commands with upscmd
+
+```bash
+export UPS_USER=admin
+export UPS_PASS=mypass
+
+# Quick battery test
+upscmd -u $UPS_USER$ -p $UPS_PASS ups test.battery.start.quick
+```
+
+## ZFS Size Data
+
+```bash
+# jq -r is required otherwise the data will be invalid
+zfs list -j enc0/vms -p -o available,used | \
+jq -r --arg TIMESTAMP `date +%s` '"driveripper.vms.data.used " + .datasets[].properties.used.value + " " + $TIMESTAMP' | \
+nc -N -4 yellow.reeselink.com 2003
+```