3 changed files with 472 additions and 2 deletions
--- a/monitoring/scripts/CONTEXT.md
+++ b/monitoring/scripts/CONTEXT.md
@ -1,9 +1,9 @@
 ---
 title: "Monitoring Scripts Context"
-description: "Operational context for all monitoring scripts: Jellyfin GPU health monitor, NVIDIA driver update checker, Tdarr API/file monitors, and Windows reboot detection. Includes cron schedules, Discord integration patterns, and troubleshooting."
+description: "Operational context for all monitoring scripts: Proxmox backup checker, CT 302 self-health, Jellyfin GPU health monitor, NVIDIA driver update checker, Tdarr API/file monitors, and Windows reboot detection. Includes cron schedules, Discord integration patterns, and troubleshooting."
 type: context
 domain: monitoring
-tags: [jellyfin, gpu, nvidia, tdarr, discord, cron, python, windows, scripts]
+tags: [proxmox, backup, jellyfin, gpu, nvidia, tdarr, discord, cron, python, bash, windows, scripts]
 ---

 # Monitoring Scripts - Operational Context
@ -13,6 +13,77 @@ This directory contains active operational scripts for system monitoring, health

 ## Core Monitoring Scripts

+### Proxmox Backup Verification
+**Script**: `proxmox-backup-check.sh`
+**Purpose**: Weekly check that every running VM/CT has a successful vzdump backup within 7 days. Posts a color-coded Discord embed with per-guest status.
+
+**Key Features**:
+- SSHes to Proxmox host and queries `pvesh` task history + guest lists via API
+- Categorizes each guest: 🟢 green (backed up), 🟡 yellow (overdue), 🔴 red (no backup)
+- Sorts output by VMID; only posts to Discord — no local side effects
+- `--dry-run` mode prints the Discord payload without sending
+- `--days N` overrides the default 7-day window
+
+**Schedule**: Weekly on Monday 08:00 UTC (CT 302 cron)
+```bash
+0 8 * * 1 DISCORD_WEBHOOK="<url>" /root/scripts/proxmox-backup-check.sh >> /var/log/proxmox-backup-check.log 2>&1
+```
+
+**Usage**:
+```bash
+# Dry run (no Discord)
+proxmox-backup-check.sh --dry-run
+
+# Post to Discord
+DISCORD_WEBHOOK="https://discord.com/api/webhooks/..." proxmox-backup-check.sh
+
+# Custom window
+proxmox-backup-check.sh --days 14 --discord-webhook "https://..."
+```
+
+**Dependencies**: `jq`, `curl`, SSH access to Proxmox host alias `proxmox`
+
+**Install on CT 302**:
+```bash
+cp proxmox-backup-check.sh /root/scripts/
+chmod +x /root/scripts/proxmox-backup-check.sh
+```
+
+### CT 302 Self-Health Monitor
+**Script**: `ct302-self-health.sh`
+**Purpose**: Monitors disk usage on CT 302 (claude-runner) itself. Alerts to Discord when any filesystem exceeds the threshold (default 80%). Runs silently when healthy — no Discord spam on green.
+
+**Key Features**:
+- Checks all non-virtual filesystems (`df`, excludes tmpfs/devtmpfs/overlay)
+- Only sends a Discord alert when a filesystem is at or above threshold
+- `--always-post` flag forces a post even when healthy (useful for testing)
+- `--dry-run` mode prints payload without sending
+
+**Schedule**: Daily at 07:00 UTC (CT 302 cron)
+```bash
+0 7 * * * DISCORD_WEBHOOK="<url>" /root/scripts/ct302-self-health.sh >> /var/log/ct302-self-health.log 2>&1
+```
+
+**Usage**:
+```bash
+# Check and alert if over 80%
+DISCORD_WEBHOOK="https://discord.com/api/webhooks/..." ct302-self-health.sh
+
+# Lower threshold test
+ct302-self-health.sh --threshold 50 --dry-run
+
+# Always post (weekly status report pattern)
+ct302-self-health.sh --always-post --discord-webhook "https://..."
+```
+
+**Dependencies**: `jq`, `curl`, `df`
+
+**Install on CT 302**:
+```bash
+cp ct302-self-health.sh /root/scripts/
+chmod +x /root/scripts/ct302-self-health.sh
+```
+
 ### Jellyfin GPU Health Monitor
 **Script**: `jellyfin_gpu_monitor.py`
 **Purpose**: Monitor Jellyfin container GPU access with Discord alerts and auto-restart capability
@ -235,6 +306,17 @@ python3 tdarr_file_monitor.py >> /mnt/NV2/Development/claude-home/logs/tdarr-fil
 0 9 * * 1 /usr/bin/python3 /home/cal/scripts/nvidia_update_checker.py --check --discord-alerts >> /home/cal/logs/nvidia-update-checker.log 2>&1
 ```

+**Active Cron Jobs** (on CT 302 / claude-runner, root user):
+```bash
+# Proxmox backup verification - Weekly (Mondays at 8 AM UTC)
+0 8 * * 1 DISCORD_WEBHOOK="<homelab-alerts-webhook>" /root/scripts/proxmox-backup-check.sh >> /var/log/proxmox-backup-check.log 2>&1
+
+# CT 302 self-health disk check - Daily at 7 AM UTC (alerts only when >80%)
+0 7 * * * DISCORD_WEBHOOK="<homelab-alerts-webhook>" /root/scripts/ct302-self-health.sh >> /var/log/ct302-self-health.log 2>&1
+```
+
+**Note**: Scripts must be installed manually on CT 302. Source of truth is `monitoring/scripts/` in this repo — copy to `/root/scripts/` on CT 302 to deploy.
+
 **Manual/On-Demand**:
 - `tdarr_monitor.py` - Run as needed for Tdarr health checks
 - `tdarr_file_monitor.py` - Can be scheduled if automatic backup needed
--- a/monitoring/scripts/ct302-self-health.sh
+++ b/monitoring/scripts/ct302-self-health.sh
@ -0,0 +1,158 @@
+#!/usr/bin/env bash
+# ct302-self-health.sh — CT 302 (claude-runner) disk self-check → Discord
+#
+# Monitors disk usage on CT 302 itself and alerts to Discord when any
+# filesystem exceeds the threshold. Closes the blind spot where the
+# monitoring system cannot monitor itself via external health checks.
+#
+# Designed to run silently when healthy (no Discord spam on green).
+# Only posts when a filesystem is at or above THRESHOLD.
+#
+# Usage:
+#   ct302-self-health.sh [--discord-webhook URL] [--threshold N] [--dry-run] [--always-post]
+#
+# Environment overrides:
+#   DISCORD_WEBHOOK   Discord webhook URL (required unless --dry-run)
+#   DISK_THRESHOLD    Disk usage % alert threshold (default: 80)
+#
+# Install on CT 302 (daily, 07:00 UTC):
+#   0 7 * * * /root/scripts/ct302-self-health.sh >> /var/log/ct302-self-health.log 2>&1
+
+set -uo pipefail
+
+DISK_THRESHOLD="${DISK_THRESHOLD:-80}"
+DISCORD_WEBHOOK="${DISCORD_WEBHOOK:-}"
+DRY_RUN=0
+ALWAYS_POST=0
+
+while [[ $# -gt 0 ]]; do
+  case "$1" in
+    --discord-webhook)
+      if [[ $# -lt 2 ]]; then
+        echo "Error: --discord-webhook requires a value" >&2
+        exit 1
+      fi
+      DISCORD_WEBHOOK="$2"
+      shift 2
+      ;;
+    --threshold)
+      if [[ $# -lt 2 ]]; then
+        echo "Error: --threshold requires a value" >&2
+        exit 1
+      fi
+      DISK_THRESHOLD="$2"
+      shift 2
+      ;;
+    --dry-run)
+      DRY_RUN=1
+      shift
+      ;;
+    --always-post)
+      ALWAYS_POST=1
+      shift
+      ;;
+    *)
+      echo "Unknown option: $1" >&2
+      exit 1
+      ;;
+  esac
+done
+
+if [[ "$DRY_RUN" -eq 0 && -z "$DISCORD_WEBHOOK" ]]; then
+  echo "Error: DISCORD_WEBHOOK not set. Use --discord-webhook URL or set env var." >&2
+  exit 1
+fi
+
+log() { echo "[$(date '+%Y-%m-%d %H:%M:%S')] $*"; }
+
+# ---------------------------------------------------------------------------
+# Check disk usage on all real filesystems
+# ---------------------------------------------------------------------------
+# df output: Filesystem Use% Mounted-on (skipping tmpfs, devtmpfs, overlay)
+TRIGGERED=()
+ALL_FS=()
+
+while IFS= read -r line; do
+  fs=$(echo "$line" | awk '{print $1}')
+  pct=$(echo "$line" | awk '{print $5}' | tr -d '%')
+  mount=$(echo "$line" | awk '{print $6}')
+  ALL_FS+=("${pct}% ${mount} (${fs})")
+  if [[ "$pct" -ge "$DISK_THRESHOLD" ]]; then
+    TRIGGERED+=("${pct}% used — ${mount} (${fs})")
+  fi
+done < <(df -h --output=source,size,used,avail,pcent,target |
+  tail -n +2 |
+  awk '$1 !~ /^(tmpfs|devtmpfs|overlay|udev)/' |
+  awk '{print $1, $5, $6}')
+
+HOSTNAME=$(hostname -s)
+TRIGGERED_COUNT=${#TRIGGERED[@]}
+
+log "Disk check complete: ${TRIGGERED_COUNT} filesystem(s) above ${DISK_THRESHOLD}%"
+
+# Exit cleanly with no Discord post if everything is healthy
+if [[ "$TRIGGERED_COUNT" -eq 0 && "$ALWAYS_POST" -eq 0 && "$DRY_RUN" -eq 0 ]]; then
+  log "All filesystems healthy — no alert needed."
+  exit 0
+fi
+
+# ---------------------------------------------------------------------------
+# Build Discord payload
+# ---------------------------------------------------------------------------
+if [[ "$TRIGGERED_COUNT" -gt 0 ]]; then
+  EMBED_COLOR=15548997 # 0xED4245 red
+  TITLE="🔴 ${HOSTNAME}: Disk usage above ${DISK_THRESHOLD}%"
+  alert_lines=$(printf '⚠️ %s\n' "${TRIGGERED[@]}")
+  FIELDS=$(jq -n \
+    --arg name "Filesystems Over Threshold" \
+    --arg value "$alert_lines" \
+    '[{"name": $name, "value": $value, "inline": false}]')
+else
+  EMBED_COLOR=5763719 # 0x57F287 green
+  TITLE="🟢 ${HOSTNAME}: All filesystems healthy"
+  FIELDS='[]'
+fi
+
+# Add summary of all filesystems
+all_lines=$(printf '%s\n' "${ALL_FS[@]}")
+FIELDS=$(echo "$FIELDS" | jq \
+  --arg name "All Filesystems" \
+  --arg value "$all_lines" \
+  '. + [{"name": $name, "value": $value, "inline": false}]')
+
+FOOTER="$(date -u '+%Y-%m-%d %H:%M UTC') · CT 302 self-health · threshold: ${DISK_THRESHOLD}%"
+
+PAYLOAD=$(jq -n \
+  --arg title "$TITLE" \
+  --argjson color "$EMBED_COLOR" \
+  --argjson fields "$FIELDS" \
+  --arg footer "$FOOTER" \
+  '{
+    "embeds": [{
+      "title": $title,
+      "color": $color,
+      "fields": $fields,
+      "footer": {"text": $footer}
+    }]
+  }')
+
+if [[ "$DRY_RUN" -eq 1 ]]; then
+  log "DRY RUN — Discord payload:"
+  echo "$PAYLOAD" | jq .
+  exit 0
+fi
+
+log "Posting to Discord..."
+HTTP_STATUS=$(curl -s -o /tmp/ct302-self-health-discord.out \
+  -w "%{http_code}" \
+  -X POST "$DISCORD_WEBHOOK" \
+  -H "Content-Type: application/json" \
+  -d "$PAYLOAD")
+
+if [[ "$HTTP_STATUS" -ge 200 && "$HTTP_STATUS" -lt 300 ]]; then
+  log "Discord notification sent (HTTP ${HTTP_STATUS})."
+else
+  log "Warning: Discord returned HTTP ${HTTP_STATUS}."
+  cat /tmp/ct302-self-health-discord.out >&2
+  exit 1
+fi
--- a/monitoring/scripts/proxmox-backup-check.sh
+++ b/monitoring/scripts/proxmox-backup-check.sh
@ -0,0 +1,230 @@
+#!/usr/bin/env bash
+# proxmox-backup-check.sh — Weekly Proxmox backup verification → Discord
+#
+# SSHes to the Proxmox host and checks that every running VM/CT has a
+# successful vzdump backup within the last 7 days. Posts a color-coded
+# Discord summary with per-guest status.
+#
+# Usage:
+#   proxmox-backup-check.sh [--discord-webhook URL] [--days N] [--dry-run]
+#
+# Environment overrides:
+#   DISCORD_WEBHOOK   Discord webhook URL (required unless --dry-run)
+#   PROXMOX_NODE      Proxmox node name (default: proxmox)
+#   PROXMOX_SSH       SSH alias or host for Proxmox (default: proxmox)
+#   WINDOW_DAYS       Backup recency window in days (default: 7)
+#
+# Install on CT 302 (weekly, Monday 08:00 UTC):
+#   0 8 * * 1 /root/scripts/proxmox-backup-check.sh >> /var/log/proxmox-backup-check.log 2>&1
+
+set -uo pipefail
+
+PROXMOX_NODE="${PROXMOX_NODE:-proxmox}"
+PROXMOX_SSH="${PROXMOX_SSH:-proxmox}"
+WINDOW_DAYS="${WINDOW_DAYS:-7}"
+DISCORD_WEBHOOK="${DISCORD_WEBHOOK:-}"
+DRY_RUN=0
+
+while [[ $# -gt 0 ]]; do
+  case "$1" in
+    --discord-webhook)
+      if [[ $# -lt 2 ]]; then
+        echo "Error: --discord-webhook requires a value" >&2
+        exit 1
+      fi
+      DISCORD_WEBHOOK="$2"
+      shift 2
+      ;;
+    --days)
+      if [[ $# -lt 2 ]]; then
+        echo "Error: --days requires a value" >&2
+        exit 1
+      fi
+      WINDOW_DAYS="$2"
+      shift 2
+      ;;
+    --dry-run)
+      DRY_RUN=1
+      shift
+      ;;
+    *)
+      echo "Unknown option: $1" >&2
+      exit 1
+      ;;
+  esac
+done
+
+if [[ "$DRY_RUN" -eq 0 && -z "$DISCORD_WEBHOOK" ]]; then
+  echo "Error: DISCORD_WEBHOOK not set. Use --discord-webhook URL or set env var." >&2
+  exit 1
+fi
+
+if ! command -v jq &>/dev/null; then
+  echo "Error: jq is required but not installed." >&2
+  exit 1
+fi
+
+SSH_OPTS="-o StrictHostKeyChecking=accept-new -o ConnectTimeout=10 -o BatchMode=yes"
+CUTOFF=$(date -d "-${WINDOW_DAYS} days" +%s)
+NOW=$(date +%s)
+
+log() { echo "[$(date '+%Y-%m-%d %H:%M:%S')] $*"; }
+
+# ---------------------------------------------------------------------------
+# Fetch data from Proxmox
+# ---------------------------------------------------------------------------
+log "Fetching VM and CT list from Proxmox node '${PROXMOX_NODE}'..."
+VMS_JSON=$(ssh $SSH_OPTS "$PROXMOX_SSH" \
+  "pvesh get /nodes/${PROXMOX_NODE}/qemu --output-format json 2>/dev/null" || echo "[]")
+CTS_JSON=$(ssh $SSH_OPTS "$PROXMOX_SSH" \
+  "pvesh get /nodes/${PROXMOX_NODE}/lxc --output-format json 2>/dev/null" || echo "[]")
+
+log "Fetching recent vzdump task history (limit 200)..."
+TASKS_JSON=$(ssh $SSH_OPTS "$PROXMOX_SSH" \
+  "pvesh get /nodes/${PROXMOX_NODE}/tasks --typefilter vzdump --limit 200 --output-format json 2>/dev/null" || echo "[]")
+
+# ---------------------------------------------------------------------------
+# Build per-guest backup status
+# ---------------------------------------------------------------------------
+# Merge VMs and CTs into one list: [{vmid, name, type}]
+GUESTS_JSON=$(jq -n \
+  --argjson vms "$VMS_JSON" \
+  --argjson cts "$CTS_JSON" '
+    ($vms | map(select(.status == "running") | {vmid: (.vmid | tostring), name, type: "VM"})) +
+    ($cts  | map(select(.status == "running") | {vmid: (.vmid | tostring), name, type: "CT"}))
+  ')
+
+GUEST_COUNT=$(echo "$GUESTS_JSON" | jq 'length')
+log "Found ${GUEST_COUNT} running guests."
+
+# For each guest, find the most recent successful (status == "OK") vzdump task
+RESULTS=$(jq -n \
+  --argjson guests "$GUESTS_JSON" \
+  --argjson tasks "$TASKS_JSON" \
+  --argjson cutoff "$CUTOFF" \
+  --argjson now "$NOW" \
+  --argjson window "$WINDOW_DAYS" '
+  $guests | map(
+    . as $g |
+    ($tasks | map(
+      select(
+        (.vmid | tostring) == $g.vmid
+        and .status == "OK"
+      ) | .starttime
+    ) | max // 0) as $last_ts |
+    {
+      vmid: $g.vmid,
+      name: $g.name,
+      type: $g.type,
+      last_backup_ts: $last_ts,
+      age_days: (if $last_ts > 0 then (($now - $last_ts) / 86400 | floor) else -1 end),
+      status: (
+        if   $last_ts >= $cutoff then "green"
+        elif $last_ts > 0        then "yellow"
+        else                          "red"
+        end
+      )
+    }
+  ) | sort_by(.vmid | tonumber)
+')
+
+GREEN_GUESTS=$(echo "$RESULTS" | jq '[.[] | select(.status == "green")]')
+YELLOW_GUESTS=$(echo "$RESULTS" | jq '[.[] | select(.status == "yellow")]')
+RED_GUESTS=$(echo "$RESULTS" | jq '[.[] | select(.status == "red")]')
+
+GREEN_COUNT=$(echo "$GREEN_GUESTS" | jq 'length')
+YELLOW_COUNT=$(echo "$YELLOW_GUESTS" | jq 'length')
+RED_COUNT=$(echo "$RED_GUESTS" | jq 'length')
+
+log "Results: ${GREEN_COUNT} green, ${YELLOW_COUNT} yellow, ${RED_COUNT} red"
+
+# ---------------------------------------------------------------------------
+# Build Discord payload
+# ---------------------------------------------------------------------------
+if [[ "$RED_COUNT" -gt 0 ]]; then
+  EMBED_COLOR=15548997 # 0xED4245 red
+  STATUS_LINE="🔴 Backup issues detected — action required"
+elif [[ "$YELLOW_COUNT" -gt 0 ]]; then
+  EMBED_COLOR=16705372 # 0xFF851C orange
+  STATUS_LINE="🟡 Some backups are overdue (>${WINDOW_DAYS}d)"
+else
+  EMBED_COLOR=5763719 # 0x57F287 green
+  STATUS_LINE="🟢 All ${GUEST_COUNT} guests backed up within ${WINDOW_DAYS} days"
+fi
+
+# Format guest lines: "VM 116 (plex) — 2d ago" or "CT 302 (claude-runner) — NO BACKUPS"
+format_guest() {
+  local prefix="$1" guests="$2"
+  echo "$guests" | jq -r '.[] | "\(.type) \(.vmid) (\(.name))"' |
+    while IFS= read -r line; do echo "${prefix} ${line}"; done
+}
+
+format_guest_with_age() {
+  local prefix="$1" guests="$2"
+  echo "$guests" | jq -r '.[] | "\(.type) \(.vmid) (\(.name)) — \(.age_days)d ago"' |
+    while IFS= read -r line; do echo "${prefix} ${line}"; done
+}
+
+# Build fields array
+fields='[]'
+
+if [[ "$GREEN_COUNT" -gt 0 ]]; then
+  green_lines=$(format_guest_with_age "✅" "$GREEN_GUESTS")
+  fields=$(echo "$fields" | jq \
+    --arg name "🟢 Healthy (${GREEN_COUNT})" \
+    --arg value "$green_lines" \
+    '. + [{"name": $name, "value": $value, "inline": false}]')
+fi
+
+if [[ "$YELLOW_COUNT" -gt 0 ]]; then
+  yellow_lines=$(format_guest_with_age "⚠️" "$YELLOW_GUESTS")
+  fields=$(echo "$fields" | jq \
+    --arg name "🟡 Overdue — last backup >${WINDOW_DAYS}d ago (${YELLOW_COUNT})" \
+    --arg value "$yellow_lines" \
+    '. + [{"name": $name, "value": $value, "inline": false}]')
+fi
+
+if [[ "$RED_COUNT" -gt 0 ]]; then
+  red_lines=$(format_guest "❌" "$RED_GUESTS")
+  fields=$(echo "$fields" | jq \
+    --arg name "🔴 No Successful Backups Found (${RED_COUNT})" \
+    --arg value "$red_lines" \
+    '. + [{"name": $name, "value": $value, "inline": false}]')
+fi
+
+FOOTER="$(date -u '+%Y-%m-%d %H:%M UTC') · ${GUEST_COUNT} guests · window: ${WINDOW_DAYS}d"
+
+PAYLOAD=$(jq -n \
+  --arg title "Proxmox Backup Check — ${STATUS_LINE}" \
+  --argjson color "$EMBED_COLOR" \
+  --argjson fields "$fields" \
+  --arg footer "$FOOTER" \
+  '{
+    "embeds": [{
+      "title": $title,
+      "color": $color,
+      "fields": $fields,
+      "footer": {"text": $footer}
+    }]
+  }')
+
+if [[ "$DRY_RUN" -eq 1 ]]; then
+  log "DRY RUN — Discord payload:"
+  echo "$PAYLOAD" | jq .
+  exit 0
+fi
+
+log "Posting to Discord..."
+HTTP_STATUS=$(curl -s -o /tmp/proxmox-backup-check-discord.out \
+  -w "%{http_code}" \
+  -X POST "$DISCORD_WEBHOOK" \
+  -H "Content-Type: application/json" \
+  -d "$PAYLOAD")
+
+if [[ "$HTTP_STATUS" -ge 200 && "$HTTP_STATUS" -lt 300 ]]; then
+  log "Discord notification sent (HTTP ${HTTP_STATUS})."
+else
+  log "Warning: Discord returned HTTP ${HTTP_STATUS}."
+  cat /tmp/proxmox-backup-check-discord.out >&2
+  exit 1
+fi