What Are the Effects on ECS Metrics If Vmtools Is Not Installed on ECSs?

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If vmtools is not installed on ECSs, CES cannot monitor Memory Usage, Disk Usage, Inband Incoming Rate, and Inband Outgoing Rate of those ECSs. However, CES can monitor Outband Incoming Rate and Outband Outgoing Rate, reducing the data accuracy of CPU Usage.


If the ECSs are I/O-optimized ECSs, CES cannot monitor Disk Usage, Inband Incoming Rate, and Inband Outgoing Rate of ECSs no matter vmtools is installed or not.



Other related questions:
Why Are the Network Traffic Metrics in CES Different from Those Detected in ECS?

The sample data collection interval in the CES is different from that used by the metric monitoring tool in the ECS.

The CES collects ECS and EVS data at a four-minute interval. However, the metric monitoring tool in the ECS collects the data at a one-second interval.

A longer data collection interval causes distortion of data generated during a short period of time. Therefore, CES is suitable for long-term website monitoring and monitoring of applications running on ECSs.

Furthermore, you can configure alarm thresholds so that alarms can be generated in the event of resource exceptions or insufficiency, improving resource reliability.


What is an ECS
An Elastic Cloud Server (ECS) is a computing server consisting of the CPU, memory, and disks that allows real-time access, on-demand allocation and elastic scaling. In addition, it combines many services including the Virtual Private Cloud (VPC) and Cloud Server Backup Service (CSBS) to create an efficient, reliable, and secure computing environment. This ensures stable and uninterrupted operation of services. The resources, including CPUs and memory, used by an ECS are hardware resources that are consolidated using the virtualization technology. When creating an ECS, you can configure its CPU, memory, mirroring specifications, login authentication mode and so on. After the ECS is created, you can use it on the cloud like using your local PC or physical server.

ECS Creation Fails Because Quota Issuing Has Not Taken Effect on ServiceCenter
【Product�? ServiceCenter 【Version�? 3.0.8 【Fault Type�? Quota and ECS application failure 【Symptom�? ECS creation has failed. 【Fault Locating�? Check the error prompt when you create an ECS. The system prompts that your quota is insufficient. It is caused by a defect in ServiceCenter 3.0.8. 【Root Cause�? Quota issuing has not taken effect. After the default resource quota is reached, users cannot create ECSs. 【Suggestions and Summary�? This problem can be fixed after you upgrade ServiceCenter to 3.0.8 SPC1. ---End

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