Runtime logs

Device-side logs

• Request logs:

  The following log entries appear when a device sends a device distribution request to IoT Platform.

  core_sysdep_network_establish host iot-auth-global.aliyuncs.com port 443, type 0
  establish tcp connection with server(host='iot-auth-global.aliyuncs.com', port=[443])
  success to establish tcp, fd=3
  local port: 37124
  [1626074474.366][LK-1000] establish mbedtls connection with server(host='iot-auth-global.aliyuncs.com', port=[443])
  [1626074474.466][LK-1000] success to establish mbedtls connection, (cost 45366 bytes in total, max used 48070 bytes)
  [1626074474.466][LK-040B] > POST /auth/bootstrap HTTP/1.1
  [1626074474.466][LK-040B] > Host: iot-auth-global.aliyuncs.com
  [1626074474.466][LK-040B] > Accept: text/xml,text/javascript,text/html,application/json
  [1626074474.466][LK-040B] > Content-Type: application/x-www-form-urlencoded;charset=utf-8
  [1626074474.466][LK-040B] > Content-Length: 111
  [1626074474.466][LK-040B] >
  [LK-040C] > 70 72 6F 64 75 63 74 4B  65 79 3D 67 37 68 30 67 | productKey=a18**
  [LK-040C] > 35 77 72 79 34 51 26 64  65 76 69 63 65 4E 61 6D | ******&deviceNam
  [LK-040C] > 65 3D 4C 69 67 68 74 53  77 69 74 63 68 42 6F 6F | e=LightSwitch&cl
  [LK-040C] > 74 73 74 72 61 70 26 63  6C 69 65 6E 74 49 64 3D | ientId=a18******
  [LK-040C] > 67 37 68 30 67 35 77 72  79 34 51 2E 4C 69 67 68 | **.LightSwitch&r
  [LK-040C] > 74 53 77 69 74 63 68 42  6F 6F 74 73 74 72 61 70 | esources=mqtt
  [LK-040C] > 26 72 65 73 6F 75 72 63  65 73 3D 6D 71 74 74    | 
                      

• Response logs:

  After IoT Platform receives the device distribution request, it returns an endpoint and a port number to the device. The following log entries appear.

  [1626074474.566][LK-040D] < HTTP/1.1 200 OK
  [1626074474.566][LK-040D] < Server: Tengine
  [1626074474.566][LK-040D] < Date: Mon, 12 Jul 2021 07:21:14 GMT
  [1626074474.566][LK-040D] < Content-Type: text/xml
  [1626074474.566][LK-040D] < Content-Length: 174
  [1626074474.566][LK-040D] < Connection: keep-alive
  [1626074474.566][LK-040D] < X-Application-Context: iotx-base:oxs-shanghai-global-dns:7001
  [1626074474.566][LK-040D] <
  [LK-040E] < 7B 22 63 6F 64 65 22 3A  32 30 30 2C 22 64 61 74 | {"code":200,"dat
  [LK-040E] < 61 22 3A 7B 22 69 6E 73  74 61 6E 63 65 49 64 22 | a":{"instanceId"
  [LK-040E] < 3A 22 69 6F 74 2D 30 36  30 61 30 35 66 63 22 2C | :"iot-06******",
  [LK-040E] < 22 72 65 73 6F 75 72 63  65 73 22 3A 7B 22 6D 71 | "resources":{"mq
  [LK-040E] < 74 74 22 3A 7B 22 68 6F  73 74 22 3A 22 69 6F 74 | tt":{"host":"iot
  [LK-040E] < 2D 30 36 30 61 30 35 66  63 2E 6D 71 74 74 2E 69 | -06******.mqtt.i
  [LK-040E] < 6F 74 68 75 62 2E 61 6C  69 75 6E 63 73 2E 63 | othub.aliyuncs.c
  [LK-040E] < 6F 6D 22 2C 22 69 70 22  3A 22 31 30 31 2E 31 33 | om","ip":"101.13
  [LK-040E] < 33 2E 31 36 36 2E 31 37  32 22 2C 22 70 6F 72 74 | 3.***.***","port
  [LK-040E] < 22 3A 31 38 38 33 7D 7D  7D 2C 22 6D 65 73 73 61 | ":1883}}},"messa
  [LK-040E] < 67 65 22 3A 22 73 75 63  63 65 73 73 22 7D       | ge":"success"}
  status code: 200
  host: iot-06******.mqtt.iothub.aliyuncs.com, port: 1883

• Connection log

  The device uses the returned endpoint and port number to connect to IoT Platform. The following log entries appear.

  [1626074474.566][LK-0313] MQTT user calls aiot_mqtt_connect api, connect
  [1626074474.566][LK-0317] LightSwitch&a18********
  [1626074474.566][LK-0318] 7E8240C1708B26EEF60062B1CAF756DE2016FA5D7A780B0FC334702A37******
  [1626074474.566][LK-031D] 101.133.***.***
  core_sysdep_network_establish host iot-06******.mqtt.iothub.aliyuncs.com port 1883, type 0
  establish tcp connection with server(host='iot-06******.mqtt.iothub.aliyuncs.com', port=[1883])
  success to establish tcp, fd=4
  local port: 60686
  [1626074474.611][LK-1000] establish mbedtls connection with server(host='iot-06******.mqtt.iothub.aliyuncs.com', port=[1883])
  [1626074474.677][LK-1000] success to establish mbedtls connection, (cost 44947 bytes in total, max used 47859 bytes)
  [1626074474.677][LK-0319] a18********.LightSwitch|timestamp=2524608000000,_ss=1,_v=sdk-c-4.1.0,securemode=2,signmethod=hmacsha256,ext=3,_conn=tls_72|
  [1626074474.733][LK-0313] MQTT connect success in 170 ms
  AIOT_MQTTEVT_CONNECT

• Downstream notification logs from IoT Platform:

  After the device connects, if you perform device distribution again in IoT Platform, the device receives the following log entries. These logs indicate that IoT Platform redistributes the device and deletes its record from the original region.

  Important The device receives the following log entries only if you perform device distribution in IoT Platform.

  [1626163769.222][LK-0309] pub: /sys/a1wP******/LightSwitch/thing/bootstrap/notify
  [LK-030A] < 7B 22 6D 65 74 68 6F 64  22 3A 22 74 68 69 6E 67 | {"method":"thing
  [LK-030A] < 2E 62 6F 6F 74 73 74 72  61 70 2E 6E 6F 74 69 66 | .bootstrap.notif
  [LK-030A] < 79 22 2C 22 69 64 22 3A  22 31 30 33 39 31 37 35 | y","id":"1039175
  [LK-030A] < 33 38 31 22 2C 22 70 61  72 61 6D 73 22 3A 7B 22 | 381","params":{"
  [LK-030A] < 63 6D 64 22 3A 30 7D 2C  22 76 65 72 73 69 6F 6E | cmd":0},"version
  [LK-030A] < 22 3A 22 31 2E 30 2E 30  22 7D                   | ":"1.0.0"}
  AIOT_BOOTSTRAPRECV_NOTIFY, cmd: 0
  [1626163769.222][LK-0309] pub: /sys/a1wP******/LightSwitch/thing/bootstrap/notify_reply
  [LK-030A] > 7B 22 69 64 22 3A 22 31  30 33 39 31 37 35 33 38 | {"id":"103917538
  [LK-030A] > 31 22 2C 22 63 6F 64 65  22 3A 32 30 30 2C 22 64 | 1","code":200,"d
  [LK-030A] > 61 74 61 22 3A 7B 7D 7D                          | ata":{}}
  [1626163769.311][LK-0309] pub: /ext/notify
  [LK-030A] < 7B 22 74 69 74 6C 65 22  3A 22 6B 69 63 6B 22 2C | {"title":"kick",
  [LK-030A] < 22 63 6F 6E 74 65 6E 74  22 3A 22 4B 69 63 6B 65 | "content":"Kicke
  [LK-030A] < 64 20 64 75 65 20 74 6F  20 64 65 76 69 63 65 20 | d due to device
  [LK-030A] < 64 65 6C 65 74 65 64 22  7D                      | deleted"}
  pub, qos: 0, topic: /ext/notify
  pub, payload: {"title":"kick","content":"Kicked due to device deleted"}

IoT Platform logs

You can view the device status and operational logs in the IoT Platform consol.

• Online status

  In the navigation pane on the left, choose Device Management > Devices. Find the device and view its status. If the device status is Online, the device is connected to IoT Platform.

• Operational logs

  After a device connects, it automatically subscribes to system topics.

  In the left-side navigation pane, choose Monitoring and Operations > Log Service. Select a product to view the related logs.

  On the Cloud-side logs tab, you can view the logs for the automatic subscription to system topics. A business type of Subscription and a status of 200 indicate a successful subscription.