add machine_id

cmii-uav-watchdog-agent/host_info/mem_service.go

@@ -14,6 +14,10 @@ func NewMemoryInfo() models.MemoryInfo {
 		Total:     0,
 		Free:      0,
 		Available: 0,
+		Used:      0,
+		Buffers:   0,
+		Cached:    0,
+		Shared:    0,
 	}
 }
 
@@ -46,9 +50,18 @@ func GetMemoryInfo() models.MemoryInfo {
 			memInfo.Free = value
 		case "MemAvailable:":
 			memInfo.Available = value
+		case "Buffers:":
+			memInfo.Buffers = value // 存储 Buffers 值
+		case "Cached:":
+			memInfo.Cached = value // 存储 Cached 值
+		case "Shmem:":
+			memInfo.Shared = value // 存储 Shared 值
 		}
 	}
 
+	// 计算已用内存
+	memInfo.Used = memInfo.Total - memInfo.Free - memInfo.Buffers - memInfo.Cached - memInfo.Shared
+
 	return memInfo
 }