What is the definition of a trace


A trace is the operation record of tracking and saving cloud service resources by Cloud Trace Service (CTS). You can view traces to see a history of operations performed by a specific user on specific resources.

There are two types of traces: Trace: Refer to an operation record generated during the last seven days.Archived trace: Refer to historical operation record that has been stored in the OBS bucket.

Other related questions:
What is Cloud-Trace
Cloud Trace Service (CTS) provides records of operations on cloud service resources. With CTS, you can query, audit, and backtrack operations. CTS provides four types of operation records: Operations performed on the ServiceCenter tenant portal. Operations for applying for or deleting cloud resources, for example, applying for or deleting an ECS, or creating or modifying an image. Operations performed by supporting APIs, for example, creating, modifying, querying or deleting a tracker, or querying the trace list. Operations triggered by cloud services, for example, an EIP is assigned to the Elastic Computing Service (ECS) when it is being created. On the ServiceCenter tenant portal, you can query operation records for the last seven days. To track operations over a longer period, you can enable the Object Storage Service (OBS) and deliver operation records to OBS buckets for storage in real time.

What is the definition of metadata?
Metadata, also known as media data or relay data, is data that summarizes other data. It is used to define data properties, specify data storage locations and historical data, retrieve resource data, and record information.

What is the definition of Tomcat?
Tomcat is a free-of-charge, lightweight, open source web application server developed by Apache Software Foundation, Sun and other companies, and individuals. Gaining support from Sun, Tomcat complies with the latest Servlet and JavaServer Page (JSP) specifications. It features advanced technology, stable performance, and good scalability, and occupies a small number of system resources during running. As a result, Tomcat applies to small- and medium-sized systems and scenarios with a few concurrent users. An HTTP server embedded in Tomcat enables Tomcat to work as a web server. It provides a configuration management tool and supports XML configuration files. Tomcat is different from the Apache web server, which is an HTTP server using C language.

What is AS
Auto Scaling (AS) is a service that automatically adjusts resources based on your service requirements and configured AS policies. You can specify AS configurations and policies based on service requirements. These configurations and policies free you from repeatedly adjusting resources to keep up with service changes and demand peaks, which helps you reduce the required resources and workforce.

Why Is the Resource ID of Some Traces in the Trace List a Hyperlink?

After you click Resource ID of a trace, a page that shows details of the cloud resource is displayed. Currently, only some operation records of ECS, EVS, VBS, IMS, AS, CES, and VPC can be recorded, and more operation records will be supported in the future.

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