Monitoring and Alarms

Last updated: 2021-01-12 18:32:04


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

    This document describes how to get statistics in the COS Console. For more information on how to use Cloud Monitor APIs to get more detailed data, 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 general overview, alarm overview, and overall monitoring information
    Alarm management Supports alarm management and configuration Supports creating new COS alarming policies, custom messages, and trigger templates
    Monitoring platform Monitors traffic and displays data of user-defined monitoring metrics Displays your overall bandwidth information and allows you to customize monitoring metrics and data to be reported
    Cloud product monitoring Displays the COS bucket monitoring view Allows you to query the current monitoring views and data such as read and write requests and traffic for each bucket

    Use Cases

    • Daily management: you can log in to the Cloud Monitor Console to view the running status of COS in real time.
    • Troubleshooting: you will receive alarm notifications when a monitoring metric reaches the alarming threshold, allowing you to quickly get notifications for exceptions, check the causes, and fix them in a timely manner.

    Viewing in the Console

    You can log in to the Cloud Monitor Console to view the monitoring data for COS.

    Calling APIs

    You can view the monitoring data for COS by calling the corresponding APIs. Below are the monitoring metrics for COS.


    Metric Name Description 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 Description 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 Retrieval

    Metric Name Description Unit
    std_retrieval Standard data retrieval B
    sia_retrieval Standard_IA data retrieval B
    nel_retrieval Nearline data retrieval B


    Metric Name Description 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 Description 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 types of monitoring intervals, including monitoring data in real time, in the past 24 hours, in the past 7 days, and in user-specified period, with time granularity of 1 minute or 5 minutes.
    • Data retention: monitoring data with 1-minute, 5-minute, and 1-hour granularity will be retained for 31 days; monitoring data with 1-day granularity will be 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 status.
    • Alarm setting: you can set alarm-triggering thresholds for the metrics. Cloud Monitor will send notifications to specified recipients when the alarm is triggered. For more information, see [

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