# 示例3：查询管理类事件
#### 场景描述
本章以查询租户最近一小时内所有管理类事件为例。
#### 涉及其它云服务接口
无。
#### 查询管理类事件列表
- 接口相关信息 URI格式：GET /v3/{project_id}/traces
  
- 请求示例 GET https://{cts_endpoint}/v3/{project_id} /traces?trace_type=system
  {cts_endpoint}信息请从[地区和终端节点](https://developer.huaweicloud.com/endpoint)获取。
  
 
- 响应示例
  ```
  {
    "meta_data" : {
      "count" : 2,
      "marker" : "e001ccb8-bc09-11e6-b2cc-2640a43cc6e8"
    },
    "traces" : [ {
      "time" : 1472148708232,
      "user" : {
        "name" : "xxx",
        "domain" : {
          "name" : "xxx",
          "id" : "ded649d814464428ba89d04d7955c93e"
        }
      },
      "response" : {
        "code" : "VPC.0514",
        "message" : "Update port fail."
      },
      "code" : 200,
      "service_type" : "VPC",
      "resource_type" : "eip",
      "resource_name" : "192.144.163.1",
      "resource_id" : "d502809d-0d1d-41ce-9690-784282142ccc",
      "trace_name" : "deleteEip",
      "trace_rating" : "warning",
      "trace_type" : "ConsoleAction",
      "api_version" : "2.0",
      "record_time" : 1481066128032,
      "trace_id" : "e001ccb9-bc09-11e6-b00b-4b2a61338db6"
    }, {
      "time" : 1472148708232,
      "user" : {
        "name" : "xxx",
        "domain" : {
          "name" : "xxx",
          "id" : "ded649d814464428ba89d04d7955c93e"
        }
      },
      "response" : {
        "code" : "VPC.0514",
        "message" : "Update port fail."
      },
      "code" : 200,
      "service_type" : "VPC",
      "resource_type" : "eip",
      "resource_name" : "192.144.163.1",
      "resource_id" : "d502809d-0d1d-41ce-9690-784282142ccc",
      "trace_name" : "deleteEip",
      "trace_rating" : "warning",
      "trace_type" : "ConsoleAction",
      "api_version" : "2.0",
      "record_time" : 1481066128032,
      "trace_id" : "e001ccb8-bc09-11e6-b2cc-2640a43cc6e8"
    } ]
  }
  ```