Initial inventory and rebuild plan for planck cluster

scripts/inventory.sh

@@ -0,0 +1,36 @@
+#!/usr/bin/env bash
+# Collects hardware + network inventory from all planck nodes.
+# Usage: ./scripts/inventory.sh > docs/INVENTORY.md
+set -u
+
+FIRST=1
+NODES="${NODES:-20}"
+
+echo "# Planck Cluster Inventory"
+echo ""
+echo "Generated: $(date -Is)"
+echo ""
+echo "| Node | Model | RAM | SSD | IP | CPU Serial | Bootloader | Uptime | Temp |"
+echo "|------|-------|-----|-----|----|-----------|------------|--------|------|"
+
+for i in $(seq -w 1 "$NODES"); do
+  host="planck0${i}.local"
+  info=$(ssh -o BatchMode=yes -o ConnectTimeout=5 "adamcarr@${host}" '
+    model=$(tr -d "\0" < /proc/device-tree/model)
+    ram=$(awk "/MemTotal/ {printf \"%.0fGB\", \$2/1024/1024}" /proc/meminfo)
+    ssd=$(lsblk -dn -o SIZE,MODEL /dev/sda 2>/dev/null | tr -s " " | tr " " "/")
+    ip=$(ip -4 -o addr show eth0 | awk "{print \$4}" | cut -d/ -f1)
+    serial=$(grep -m1 Serial /proc/cpuinfo | awk "{print \$3}")
+    bl=$(vcgencmd bootloader_version 2>/dev/null | head -1)
+    up=$(uptime -p)
+    temp=$(vcgencmd measure_temp 2>/dev/null || cat /sys/class/thermal/thermal_zone0/temp)
+    echo "${model}|${ram}|${ssd}|${ip}|${serial}|${bl}|${up}|${temp}"
+  ' 2>/dev/null)
+  if [ -z "$info" ]; then
+    echo "| planck0${i} | UNREACHABLE | | | | | | |"
+  else
+    IFS='|' read -r model ram ssd ip serial bl up temp <<< "$info"
+    sep=$FIRST && FIRST=0
+    echo "| planck0${i} | ${model} | ${ram} | ${ssd} | ${ip} | ${serial} | ${bl} | ${up} | ${temp} |"
+  fi
+done