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:Query and analysis of system loads on Linux instances

Last Updated:Apr 21, 2022

Disclaimer: This topic may contain information about third-party products. The information is for reference only. Alibaba Cloud does not make a guarantee in any form of the performance and reliability of the third-party products, and potential impacts of operations on these products.

Overview

This topic describes how to query and analyze the overall load of Linux instances. Then, the load is analyzed from CPU, IO and network dimensions.

Description

Take note of the following items:

  • Before you perform high-risk operations such as modifying the specifications or data of an Alibaba Cloud instance, we recommend that you check the disaster recovery and fault tolerance capabilities of the instance to ensure data security.
  • Before you modify the specifications or data of an Alibaba Cloud instance, such as an Elastic Compute Service (ECS) instance or an ApsaraDB RDS instance, we recommend that you create snapshots or enable backups for the instance. For example, you can enable log backups for an ApsaraDB RDS instance.
  • If you have granted specific users the permissions on sensitive information, such as usernames and passwords, or submitted sensitive information in the Alibaba Cloud Management Console, we recommend that you modify the sensitive information at the earliest opportunity.

Overall load of Linux instances

For more information about the overall load of Linux instances, see Query and analyze the overall load of Linux instances.

CPU load

For more information about CPU load, see Linux CPU load queries and case studies.

IO load

For IO load, refer to Linux IO load query and case analysis.

Network load

For more information about network load, see Linux network traffic load query and case analysis.

References

For more information about how to monitor CPU and memory and generate logs, see Log tools for monitoring CPU and memory.

Applicable scope

  • Elastic Compute Service (ECS)