improve: make check_storage.sh more readable with colors and summary

cluster/check_storage.sh

@@ -1,14 +1,107 @@
 #!/usr/bin/env bash
-# 用途：檢查儲存狀態（PVC / Longhorn）
+# 用途：檢查 K3s 儲存狀態
 
 set -euo pipefail
 
-echo "=== PVC ==="
-kubectl get pvc
+# 顏色定義
+RED='\033[0;31m'
+GREEN='\033[0;32m'
+YELLOW='\033[1;33m'
+NC='\033[0m' # No Color
 
-if kubectl get ns longhorn-system >/dev/null 2>&1; then
-  echo
-  echo "=== Longhorn Volumes ==="
-  kubectl -n longhorn-system get volumes
+echo "=========================================="
+echo "        K3s 儲存狀態檢查"
+echo "=========================================="
+echo ""
+
+# 1. PVC 狀態
+echo "📦 PVC (資料卷)"
+echo "------------------------------------------"
+kubectl get pvc -o custom-columns=NAME:.metadata.name,STATUS:.status.phase,SIZE:.spec.resources.requests.storage,AGE:.metadata.age
+
+# 統計 PVC
+PVC_TOTAL=$(kubectl get pvc --no-headers 2>/dev/null | wc -l)
+PVC_BOUND=$(kubectl get pvc --no-headers 2>/dev/null | grep -c "Bound" || true)
+PVC_ISSUE=$((PVC_TOTAL - PVC_BOUND))
+
+echo ""
+if [ $PVC_ISSUE -eq 0 ]; then
+  echo -e "${GREEN}✓ 所有 PVC 正常 ($PVC_BOUND/$PVC_TOTAL)${NC}"
+else
+  echo -e "${RED}✗ 有 $PVC_ISSUE 個 PVC 異常${NC}"
 fi
 
+echo ""
+
+# 2. Longhorn Volume 狀態
+if kubectl get ns longhorn-system >/dev/null 2>&1; then
+  echo "💾 Longhorn 儲存"
+  echo "------------------------------------------"
+
+  # 取得 volume 狀態
+  kubectl -n longhorn-system get volumes -o custom-columns=NAME:.metadata.name,STATE:.status.state,健康:.status.robustness,NODE:.status.currentNodeID 2>/dev/null || {
+    kubectl -n longhorn-system get volumes
+  }
+
+  echo ""
+
+  # 統計健康狀態
+  VOL_TOTAL=$(kubectl -n longhorn-system get volumes --no-headers 2>/dev/null | wc -l)
+  VOL_HEALTHY=$(kubectl -n longhorn-system get volumes --no-headers 2>/dev/null | grep -c "healthy" || true)
+  VOL_DEGRADED=$(kubectl -n longhorn-system get volumes --no-headers 2>/dev/null | grep -c "degraded" || true)
+  VOL_FAULT=$(kubectl -n longhorn-system get volumes --no-headers 2>/dev/null | grep -c "faulted" || true)
+
+  if [ $VOL_DEGRADED -gt 0 ]; then
+    echo -e "${YELLOW}⚠ $VOL_DEGRADED 個 volume 處於 degraded 狀態${NC}"
+  fi
+
+  if [ $VOL_FAULT -gt 0 ]; then
+    echo -e "${RED}✗ $VOL_FAULT 個 volume 處於 faulted 狀態${NC}"
+  fi
+
+  if [ $VOL_HEALTHY -eq $VOL_TOTAL ]; then
+    echo -e "${GREEN}✓ 所有 volume 健康 ($VOL_HEALTHY/$VOL_TOTAL)${NC}"
+  else
+    echo -e "${GREEN}✓ 健康: $VOL_HEALTHY | ${YELLOW}警告: $VOL_DEGRADED | ${RED}故障: $VOL_FAULT${NC} (總計: $VOL_TOTAL)${NC}"
+  fi
+
+  echo ""
+
+  # 3. 節點儲存空間
+  echo "🖥️  節點儲存空間"
+  echo "------------------------------------------"
+
+  for node in vm120 vm121 vm122; do
+    NODE_INFO=$(kubectl -n longhorn-system get nodes.longhorn.io "$node" -o jsonpath="{.status.diskStatus}" 2>/dev/null)
+    if [ -n "$NODE_INFO" ]; then
+      # 取得第一個 disk 的資訊
+      DISK_NAME=$(echo "$NODE_INFO" | grep -oP '^\s+"\K[^"]+' | head -1)
+      if [ -n "$DISK_NAME" ]; then
+        STORAGE_AVAIL=$(echo "$NODE_INFO" | grep -A1 "$DISK_NAME" | grep storageAvailable | grep -oP '\d+' | head -1)
+        STORAGE_MAX=$(echo "$NODE_INFO" | grep -A1 "$DISK_NAME" | grep storageMaximum | grep -oP '\d+' | head -1)
+
+        if [ -n "$STORAGE_AVAIL" ] && [ -n "$STORAGE_MAX" ]; then
+          # 轉換為 GB
+          AVAIL_GB=$((STORAGE_AVAIL / 1024 / 1024 / 1024))
+          MAX_GB=$((STORAGE_MAX / 1024 / 1024 / 1024))
+          USED_GB=$((MAX_GB - AVAIL_GB))
+          PERCENT=$((USED_GB * 100 / MAX_GB))
+
+          # 顏色
+          if [ $PERCENT -lt 70 ]; then
+            COLOR="$GREEN"
+          elif [ $PERCENT -lt 90 ]; then
+            COLOR="$YELLOW"
+          else
+            COLOR="$RED"
+          fi
+
+          echo -e "$node: ${COLOR}${USED_GB}G / ${MAX_GB}G (${PERCENT}%)${NC}"
+        fi
+      fi
+    fi
+  done
+fi
+
+echo ""
+echo "=========================================="