Monitoring and Alarming

Last updated: 2019-08-20 16:46:23



COS statistics such as read and write requests and traffic are collected and displayed based on Cloud Monitor. You can view detailed monitoring data of COS in the Cloud Monitor Console.

This document mainly describes how statistics are displayed in the COS Console. For more information on how to use Cloud Monitor APIs to get more detailed information, see Cloud Monitoring product documentation.

Basic Features

Cloud Monitor provides the following entries for COS to implement monitoring and alarming.

Module Capabilities Main Features
Monitoring overview Displays the current status of the product Provides product overview, alarm overview, and overall monitoring information
Alarm management Supports alarm management and configuration Supports creating COS alarm policies, customizing messages, and configuring trigger templates
Monitoring platform Monitors traffic and displays data of user-defined monitoring metrics Displays your overall bandwidth information and allows you to pre-define monitoring metrics and reported data
Cloud product monitoring Displays the COS bucket monitoring view Queries the current monitoring views and data such as read and write requests and traffic in each bucket

Use Cases

  • Daily management: The running status of COS can be viewed in real time by logging in to the Cloud Monitor Console.
  • Troubleshooting: Alarm notifications will be sent when a monitoring metric reaches the alarm threshold, allowing you to quickly receive notifications for exceptions, analyze their causes, and fix them in a timely manner.

Viewing in the Console

You can view the monitoring data of COS by logging in to the Cloud Monitor Console.

Calling Through APIs

You can view the monitoring data of COS by calling the corresponding APIs.


Metric Name Meaning Unit
std_storage Standard storage - storage capacity MB
sia_storage Standard_IA storage - storage capacity MB
nel_storage Nearline Storage - storage capacity MB
arc_storage Archive storage - storage capacity MB


Metric Name Meaning Unit
internet_traffic Public network traffic B
internal_traffic Private network traffic B
cdn_origin_traffic CDN origin-pull traffic B
inbound_traffic Upload traffic B

Data Reads

Metric Name Meaning Unit
std_retrieval Standard data reads B
sia_retrieval Standard_IA data reads B
nel_retrieval Nearline data reads B


Metric Name Meaning Unit
std_read_requests Standard storage read requests /
std_write_requests Standard storage write requests /
ia_read_requests Standard_IA storage read requests /
ia_write_requests Standard_IA storage write requests /
nl_read_requests Nearline storage read requests /
nl_write_requests Nearline storage write requests /

Return Codes

Metric Name Meaning Unit
2xx_response 2xx status codes /
3xx_response 3xx status codes /
4xx_response 4xx status codes /
5xx_response 5xx status codes /

Monitoring Descriptions

  • Monitoring interval: Cloud Monitor supports multiple statistical intervals for data monitoring, such as real time, past 24 hours, past 7 days, and custom data range, with time granularities of 1 minute or 5 minutes.
  • Data retention: Monitoring data with 1-minute, 5-minute, and 1-hour granularity is retained for 31 days, while monitoring data with 1-day granularity is retained for half a year.
  • Alarm display: Cloud Monitor integrates the monitoring data of COS and displays the data entries in intuitive graphs, making it easier for you to stay informed of the overall operations.
  • Alarm setting: Metric thresholds can be set, so that when a monitoring metric triggers an alarm, Cloud Monitor can send alarm notifications to concerned groups in a timely manner. For more information, see Creating an Alarm.