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- What's New
- Function Overview
- Service Overview
- Getting Started
- User Guide
- Best Practices
-
API Reference
- Before You Start
- API Overview
- Calling APIs
- Getting Started
-
APIs
- AS Groups
- AS Configurations
- Instances
-
AS Policies
- Creating an AS Policy
- Creating an AS Policy (V2)
- Modifying an AS Policy
- Modifying an AS Policy (V2)
- Querying AS Policies Bound to an AS Group
- Querying AS Policies Bound to a Scaling Resource (V2)
- Querying AS Policies (V2)
- Querying an AS Policy
- Querying an AS Policy (V2)
- Executing, Enabling, or Disabling an AS Policy
- Deleting an AS Policy
- Batch Managing AS Policies
- AS Policy Execution Logs
- Scaling Action Logs
- Quotas
- Notifications
- Lifecycle Hooks
- Tags
- Planned Tasks
- API Version Query
- Application Examples
- Permissions and Supported Actions
- Appendix
- Change History
- SDK Reference
-
FAQ
-
General
- What Are Restrictions on Using AS?
- Must I Use AS Together With ELB and Cloud Eye?
- Is AS Billed?
- Will an Abrupt Change in Monitoring Metric Values Trigger an Unnecessary Scaling Action?
- How Many AS Policies and AS Configurations Can I Create and Use?
- Can AS Automatically Scale Up or Down vCPUs, Memory, and Bandwidth of ECSs?
- What Is an AS Quota?
- How Do I Fix the Error "The key pair does not exist" When I Connect to an Instance?
- What Types of EIP and Shared Bandwidths Can Be Adjusted by AS?
- What Types of ECS and HECS Instances Can Be Scaled by AS?
- If the OS of an ECS Instance in an AS Group Is Upgraded, Can AS Automatically Add Instances with the Newest OS During the Next Scale-out Action?
- Can AS Add Yearly/Monthly ECS Instances When It Scales Out an AS Group?
- Can AS Increase Bandwidths as Required?
- AS Group
-
AS Policy
- How Many AS Policies Can I Enable?
- What Are the Conditions to Trigger an Alarm-based AS Policy?
- What Is a Cooldown Period and Why Is It Required?
- Can AS Scale Capacity Based on Custom Monitoring by Cloud Eye?
- What Monitoring Metrics for an AS Group Will Be Affected If VM Tools Are Not Installed on the Instances in the Group?
- What Can I Do If an AS Policy Fails to Be Enabled?
- How Do I Install the Agent on Instances in an AS Group to Use Agent Monitoring Metrics?
-
Instance
- How Do I Prevent Instances Manually Added to an AS Group from Being Automatically Removed?
- When There Are Multiple Flavors Included in the AS Configuration of an AS Group, What Order Are the Flavors Selected in During Scale-out Events?
- When an Instance Is Removed from an AS Group and Deleted, Is the Application Data Saved?
- Can I Add Yearly/Monthly ECS Instances to an AS Group?
- Can the System Automatically Delete the Instances Added Based on an AS Policy When They Are Not Required?
- What Is the Expected Number of Instances?
- How Do I Delete an ECS Instance Created in a Scaling Action?
- Will a Yearly/Monthly ECS Instance Be Deleted If It Becomes Unhealthy?
- How Do I Handle Unhealthy Instances in an AS Group?
- Why Instances in an AS Group Keep Failing Health Checks and Getting Deleted and Recreated?
- How Do I Prevent Instances from Being Automatically Removed from an AS Group?
- Why Is an Instance that Was Removed from an AS Group and Deleted Still Displayed in the ECS List?
- Do I Need to Bind an EIP to an Instance Before I Manually Add the Instance to an AS Group?
- Can I Apply the Configurations of an Existing Instance in an AS Group to Instances to Be Added in the Future?
- Will the System Bind a New EIP or an Existing One a Newly Added ECS Instance?
-
Others
- How Can I Automatically Deploy My Application on an Instance?
- How Does Cloud-Init Affect the AS Service?
- Why Can't I Use a Key File to Log In to an ECS?
- Do I Need to Configure an EIP in an AS Configuration When a Load Balancer Has Been Enabled for an AS Group?
- How Do I Enable Automatic Initialization of EVS Disks on Instances that Have Been Added to an AS Group During Scaling Actions?
-
General
- Videos
- Glossary
-
More Documents
-
User Guide (ME-Abu Dhabi Region)
- Service Overview
- Best Practices
- Quick Start
- AS Management
-
FAQs
-
General
- What Are Restrictions on Using AS?
- Are ELB and Cloud Eye Mandatory for AS?
- Is AS Billed?
- Does an Abrupt Change on Monitoring Indicator Values Cause an Incorrect Scaling Action?
- How Many AS Policies and AS Configurations Can I Create and Use?
- Can AS Automatically Scale Up or Down vCPUs, Memory, and Bandwidth of ECSs?
- What Is the AS Quota?
- Why is a message displayed indicating that the key pair does not exist and the operation is discontinued when several users under the same account operate AS resources?
- AS Group
-
AS Policy
- How Many AS Policies Can Be Enabled?
- What Are the Conditions to Trigger an Alarm in the AS Policy?
- What Is a Cooldown Period? Why Is It Required?
- Can AS Scale Capacity Based on Custom Monitoring of Cloud Eye?
- What Will Monitoring Metrics for an AS Group Be Affected If VM Tools Are Not Installed on ECSs?
- What Can I Do If an AS Policy Fails to Be Enabled?
- How Can I Install the Agent Plug-in on the Instances in an AS Group to Use Agent Monitoring Metrics?
-
Instance
- How Do I Prevent Instances Manually Added to an AS Group from Being Removed Automatically?
- What Are the Sequence of Selecting Flavors in Multi-Flavor AS Configuration?
- Will the Application Data on an Instance Be Retained After the Instance Is Removed from an AS Group and Deleted?
- Can I Add ECSs Charged in Yearly/Monthly Mode?
- Can Instances That Have Been Added Based on an AS Policy Be Automatically Deleted When They Are Not Required?
- What Is the Expected Number of Instances?
- How Do I Delete an ECS Created in a Scaling Action?
- Will a Yearly/Monthly ECS Be Deleted When the ECS Becomes Faulty?
- How Should I Handle Abnormal Instances in an AS Group?
- What Can I Do If Instances in an AS Group Frequently Fail in Health Checks and Are Deleted and Then Created Repeatedly?
- How Do I Prevent ECSs from Being Removed from an AS Group Automatically?
- Why Is an Instance Removed and Deleted from an AS Group Still Displayed in the ECS List?
-
Others
- What Can I Do to Enable My Application to Be Automatically Deployed on an Instance?
- How Does Cloud-Init Affect the AS Service?
- How Can I Run Existing Services on an Instance Newly Added to an AS Group?
- Why Cannot I Use a Key File to Log In to an ECS?
- Do I Need to Configure an EIP in an AS Configuration When A Load Balancer Has Been Enabled in an AS Group?
- How Can I Enable Automatic Initialization of EVS Disks of Instances That Have Been Added in a Scaling Action to an AS Group?
-
General
- Change History
-
API Reference (ME-Abu Dhabi Region)
- Before You Start
- API Overview
- Calling APIs
- Getting Started
-
API
- AS Groups
- AS Configurations
- Instances in an AS Group
-
AS Policies
- Creating an AS Policy
- Creating an AS Policy (V2)
- Modifying an AS Policy
- Modifying an AS Policy (V2)
- Querying AS Policies
- Querying AS Policies (V2)
- Querying All AS Policies (V2)
- Querying AS Policy Details
- Querying Details of an AS Policy (V2)
- Executing, Enabling, or Disabling an AS Policy
- Deleting an AS Policy
- Performing Operations on AS Policies in Batches
- AS Policy Execution Logs
- Scaling Action Logs
- Quotas
- Notifications
- Lifecycle Hook
- Tag Management
- API Management
- Permissions Policies and Supported Actions
- Appendix
- Change History
-
User Guide (Paris Regions)
- Service Overview
- Best Practices
- Quick Start
- AS Management
-
FAQs
-
General
- What Are Restrictions on Using AS?
- Must I Use AS Together With ELB and Cloud Eye?
- Will an Abrupt Change in Monitoring Metric Values Trigger an Unnecessary Scaling Action?
- How Many AS Policies and AS Configurations Can I Create and Use?
- How Do I Fix the Error "The key pair does not exist" When I Connect to an Instance?
- AS Group
-
AS Policy
- How Many AS Policies Can I Enable?
- What Are the Conditions to Trigger an Alarm-based AS Policy?
- What Is a Cooldown Period and Why Is It Required?
- What Monitoring Metrics for an AS Group Will Be Affected If VM Tools Are Not Installed on the Instances in the Group?
- What Can I Do If an AS Policy Fails to Be Enabled?
-
Instance
- How Do I Prevent Instances Manually Added to an AS Group from Being Automatically Removed?
- When an Instance Is Removed from an AS Group and Deleted, Is the Application Data Saved?
- Can AS Automatically Delete Instances Added Based on an AS Policy When They Are Not Required?
- What Is the Expected Number of Instances?
- How Do I Delete an ECS Instance Created in a Scaling Action?
- How Do I Handle Unhealthy Instances in an AS Group?
- Why Instances in an AS Group Keep Failing Health Checks and Getting Deleted and Recreated?
- How Do I Prevent Instances from Being Automatically Removed from an AS Group?
- Why Is an Instance that Was Removed from an AS Group and Deleted Still Displayed in the ECS List?
-
Others
- How Can I Automatically Deploy My Application on an Instance?
- Why Can't I Use a Key File to Log In to an ECS?
- Do I Need to Configure an EIP in an AS Configuration When a Load Balancer Has Been Enabled for an AS Group?
- How Do I Enable Automatic Initialization of EVS Disks on Instances that Have Been Added to an AS Group During Scaling Actions?
-
General
- Change History
- API Reference (Paris Regions)
-
User Guide (Kuala Lumpur Region)
- Service Overview
- Best Practices
- Quick Start
- AS Management
-
FAQs
-
General
- What Are Restrictions on Using AS?
- Must I Use AS Together With ELB and Cloud Eye?
- Is AS Billed?
- Will an Abrupt Change in Monitoring Metric Values Trigger an Unnecessary Scaling Action?
- How Many AS Policies and AS Configurations Can I Create and Use?
- Can AS Automatically Scale Up or Down vCPUs, Memory, and Bandwidth of ECSs?
- What Is an AS Quota?
- How Do I Fix the Error "The key pair does not exist" When I Connect to an Instance?
- AS Group
-
AS Policy
- How Many AS Policies Can I Enable?
- What Are the Conditions to Trigger an Alarm-based AS Policy?
- What Is a Cooldown Period and Why Is It Required?
- Can AS Scale Capacity Based on Custom Monitoring by Cloud Eye?
- What Monitoring Metrics for an AS Group Will Be Affected If VM Tools Are Not Installed on the Instances in the Group?
- What Can I Do If an AS Policy Fails to Be Enabled?
- How Do I Install the Agent on Instances in an AS Group to Use Agent Monitoring Metrics?
-
Instance
- How Do I Prevent Instances Manually Added to an AS Group from Being Automatically Removed?
- When There Are Multiple Flavors Included in the AS Configuration of an AS Group, What Order Are the Flavors Selected in During Scale-out Events?
- When an Instance Is Removed from an AS Group and Deleted, Is the Application Data Saved?
- Can I Add Yearly/Monthly ECS Instances to an AS Group?
- Can the System Automatically Delete the Instances Added Based on an AS Policy When They Are Not Required?
- What Is the Expected Number of Instances?
- How Do I Delete an ECS Instance Created in a Scaling Action?
- Will a Yearly/Monthly ECS Instance Be Deleted If It Becomes Unhealthy?
- How Do I Handle Unhealthy Instances in an AS Group?
- Why Instances in an AS Group Keep Failing Health Checks and Getting Deleted and Recreated?
- How Do I Prevent Instances from Being Automatically Removed from an AS Group?
- Why Is an Instance that Was Removed from an AS Group and Deleted Still Displayed in the ECS List?
-
Others
- How Can I Automatically Deploy My Application on an Instance?
- How Does Cloud-Init Affect the AS Service?
- Why Can't I Use a Key File to Log In to an ECS?
- Do I Need to Configure an EIP in an AS Configuration When a Load Balancer Has Been Enabled for an AS Group?
- How Do I Enable Automatic Initialization of EVS Disks on Instances that Have Been Added to an AS Group During Scaling Actions?
-
General
- Change History
-
API Reference (Kuala Lumpur Region)
- Before You Start
- API Overview
- Calling APIs
- Getting Started
-
APIs
- AS Groups
- AS Configurations
- Instances in an AS Group
-
AS Policies
- Creating an AS Policy
- Creating an AS Policy (V2)
- Modifying an AS Policy
- Modifying an AS Policy (V2)
- Querying AS Policies
- Querying AS Policies (V2)
- Querying All AS Policies (V2)
- Querying AS Policy Details
- Executing, Enabling, or Disabling an AS Policy
- Deleting an AS Policy
- Performing Operations on AS Policies in Batches
- AS Policy Execution Logs
- Scaling Action Logs
- Quotas
- Notifications
- Lifecycle Hook
- Tag Management
- API Management
- Permissions Policies and Supported Actions
- Appendix
- Change History
-
User Guide (Ankara Region)
- Service Overview
- Best Practices
- Quick Start
- AS Management
-
FAQs
-
General
- What Are Restrictions on Using AS?
- Must I Use AS Together With ELB and Cloud Eye?
- Will an Abrupt Change in Monitoring Metric Values Trigger an Unnecessary Scaling Action?
- How Many AS Policies and AS Configurations Can I Create and Use?
- How Do I Fix the Error "The key pair does not exist" When I Connect to an Instance?
- AS Group
-
AS Policy
- How Many AS Policies Can I Enable?
- What Are the Conditions to Trigger an Alarm-based AS Policy?
- What Is a Cooldown Period and Why Is It Required?
- What Monitoring Metrics for an AS Group Will Be Affected If VM Tools Are Not Installed on the Instances in the Group?
- What Can I Do If an AS Policy Fails to Be Enabled?
-
Instance
- How Do I Prevent Instances Manually Added to an AS Group from Being Automatically Removed?
- When an Instance Is Removed from an AS Group and Deleted, Is the Application Data Saved?
- Can AS Automatically Delete Instances Added Based on an AS Policy When They Are Not Required?
- What Is the Expected Number of Instances?
- How Do I Delete an ECS Instance Created in a Scaling Action?
- How Do I Handle Unhealthy Instances in an AS Group?
- Why Instances in an AS Group Keep Failing Health Checks and Getting Deleted and Recreated?
- How Do I Prevent Instances from Being Automatically Removed from an AS Group?
- Why Is an Instance that Was Removed from an AS Group and Deleted Still Displayed in the ECS List?
-
Others
- How Can I Automatically Deploy My Application on an Instance?
- How Does Cloud-Init Affect the AS Service?
- Why Can't I Use a Key File to Log In to an ECS?
- Do I Need to Configure an EIP in an AS Configuration When a Load Balancer Has Been Enabled for an AS Group?
- How Do I Enable Automatic Initialization of EVS Disks on Instances that Have Been Added to an AS Group During Scaling Actions?
-
General
- Change History
-
API Reference (Ankara Region)
- Before You Start
- API Overview
- Calling APIs
- Getting Started
-
APIs
- AS Groups
- AS Configurations
- Instances
-
AS Policies
- Creating an AS Policy
- Creating an AS Policy (V2)
- Modifying an AS Policy
- Modifying an AS Policy (V2)
- Querying AS Policies Bound to an AS Group
- Querying AS Policies Bound to a Scaling Resource (V2)
- Querying AS Policies (V2)
- Querying an AS Policy
- Querying an AS Policy (V2)
- Executing, Enabling, or Disabling an AS Policy
- Deleting an AS Policy
- Batch Managing AS Policies
- AS Policy Execution Logs
- Scaling Action Logs
- Quotas
- Notifications
- Lifecycle Hooks
- API Version Query
- Permissions and Supported Actions
- Appendix
- Change History
-
User Guide (ME-Abu Dhabi Region)
- General Reference
Copied.
How Can I Install the Agent Plug-in on the Instances in an AS Group to Use Agent Monitoring Metrics?
Scenarios
When the scaling policy of an AS group is alarm-triggered, you can use Agent monitoring metrics to trigger scaling actions. Compared with basic monitoring, Agent monitoring provides system-level, proactive, and fine-grained monitoring services for instances. Before using Agent monitoring metrics, make sure that the Agent plug-in has been installed on the instances in the AS group. For details, see this section.
Procedure
- Log in to the management console and click Elastic Cloud Server under Computing.
The Elastic Cloud Server page is displayed.
- Create an ECS and install the Agent plug-in.
- After installing the Agent plug-in, log in to the Cloud Eye console, choose Server Monitoring > Elastic Cloud Server, and ensure that the plug-in is running and that the Agent monitoring metrics can be collected.
Figure 1 Checking the plug-in status
Figure 2 Viewing Agent monitoring metrics
- Add the AK/SK to the ECS conf.json configuration file.
- Click the username, choose My Credentials > Access Keys, obtain the AK/SK.
- If you have obtained the access key, obtain the AK/SK in the credentials.csv file saved when you created Access Keys.
- If Access Keys is not available, click Create Access Key to create one. Then, save the credentials.csv file and obtain the AK/SK in it.
- Log in to the ECS and run the cd /usr/local/telescope/bin command to go to the Agent installation directory.
- Run the vi conf.json command to open the configuration file and enter the obtained AK/SK.
If the Agent has been installed during ECS creation, the AK/SK has been added during user data injection. You only need to check the AK/SK in this step.
- Press Esc and enter :wq to save and exit the configuration file.
- Click the username, choose My Credentials > Access Keys, obtain the AK/SK.
- Go to the Image Management Service page and use this ECS to create a private image. For details, see Creating a Private Image.
Figure 3 Creating a private image
- Go to the Auto Scaling page and use the private image created in step 5 to create an AS configuration.
Figure 4 Selecting the private image
Click Private image for Image, select ces-agent-test from the drop-down list, and set other parameters as required.
- Create an AS group and associate the AS configuration created in step 6 with the AS group.
- Add an AS policy for the AS group: Set Policy Type to Alarm and Trigger Condition to an Agent monitoring metric, such as (Agent) Memory Usage.
Figure 5 Selecting a trigger condition
- Manually add the ECS created in step 2 to the AS group.
- Perform the following operations to check whether the Agent monitoring metric takes effect:
- Verify that the Agent monitoring metric is displayed on the Monitoring tab of the page providing details about the AS group.
- When the alarm threshold is reached, verify that the alarm policy is triggered on the Scaling Actions tab of the page providing details about the AS group and that instances are added for capacity expansion.
- The Agent monitoring data is available for all instances that are automatically added to the AS group.
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