- What's New
- Function Overview
- Service Overview (2.0)
- Billing (2.0)
- Getting Started (2.0)
-
User Guide (2.0)
- Introduction
- Access Center
- Dashboard
- Alarm Management
- Metric Browsing
- Log Analysis (New)
- Log Analysis (Old)
- Application Insights (Retiring)
-
Prometheus Monitoring
- Prometheus Monitoring
- Creating Prometheus Instances
- Managing Prometheus Instances
- Configuring a Recording Rule
- Metric Management
- Dashboard Monitoring
- Data Multi-Write
-
Access Guide
- Connecting Node Exporter
- Connecting Self-Built Middleware in the CCE Container Scenario
-
Exporter Access in the VM Scenario
- Access Overview
- MySQL Component Access
- Redis Component Access
- Kafka Component Access
- Nginx Component Access
- MongoDB Component Access
- Consul Component Access
- HAProxy Component Access
- PostgreSQL Component Access
- Elasticsearch Component Access
- RabbitMQ Component Access
- Access of Other Components
- Custom Plug-in Access
- Other Operations
- Obtaining the Service Address of a Prometheus Instance
- Regions that Support Public Network Addresses for Remote Write
- Viewing Prometheus Instance Data Through Grafana
- Reading Prometheus Instance Data Through Remote Read
- Reporting Self-Built Prometheus Instance Data to AOM
- Resource Usage Statistics
- Business Monitoring (Beta)
- Infrastructure Monitoring
- O&M Management (Retiring)
- Settings
- Remarks
- Permissions Management
- Auditing
- Subscribing to AOM 2.0
- Upgrading to AOM 2.0
-
Best Practices (2.0)
- AOM Best Practices
- Building a Comprehensive Metric System
- Alarm Noise Reduction
- Unified Metric Monitoring
- Customizing OS Images to Automatically Connect UniAgent
- Connecting Self-Built Middleware in the CCE Container Scenario
- Interconnecting Third-Party/IDC/Huawei Cloud Cross-Region Self-Built Prometheus with AOM Prometheus Instances
-
FAQs (2.0)
- Dashboard
- Alarm Management
- Log Analysis
- Prometheus Monitoring
- Infrastructure Monitoring
- Application Monitoring
-
Collection Management
- Are ICAgent and UniAgent the Same?
- What Can I Do If an ICAgent Is Offline?
- Why Is an Installed ICAgent Displayed as "Abnormal" on the UniAgent Installation and Configuration Page?
- Why Can't I View the ICAgent Status After It Is Installed?
- Why Can't AOM Monitor CPU and Memory Usage After ICAgent Is Installed?
- How Do I Obtain an AK/SK?
- FAQs About UniAgent and ICAgent Installation
- How Do I Enable the Nginx stub_status Module?
- Why Does APM Metric Collection Fail?
- Why Cannot the Installation Script Be Downloaded When I Try to Install UniAgent on an ECS?
- CMDB (Unavailable Soon)
-
O&M Management (Unavailable Soon)
- How Can I Obtain the OBS Permission for Installing Packages?
- Why Can't Scheduled Tasks Be Triggered?
- Can I Specify Script Parameters and Hosts During Job Execution?
- Why Is a Parameter Error Displayed When I Create a Scheduled Task Using a Cron Expression?
- How Can I Set a Review for an Execution Plan?
- Why Is "delete success:{}" Displayed (Files Cannot Be Deleted) During Disk Clearance?
- What Can I Do If the Execution Plan Is Not Updated After I Modify the Job?
- What Can I Do If "agent not found" Is Displayed?
- Why Are the Hosts Listed in Execution Logs Inconsistent with Those I Configured for a Task?
- Why Did a Task Fail to Execute?
- Other FAQs
-
API Reference
- Before You Start
- API Overview
- Calling APIs
-
APIs
-
Alarm
- Querying the Event Alarm Rule List
- Adding an Event Alarm Rule
- Modifying an Event Alarm Rule
- Deleting an Event Alarm Rule
- Querying Events and Alarms
- Counting Events and Alarms
- Reporting Events and Alarms
- Obtaining the Alarm Sending Result
- Deleting a Silence Rule
- Adding a Silence Rule
- Modifying a Silence Rule
- Obtaining the Silence Rule List
- Querying an Alarm Action Rule Based on Rule Name
- Adding an Alarm Action Rule
- Deleting an Alarm Action Rule
- Modifying an Alarm Action Rule
- Querying the Alarm Action Rule List
- Querying Metric or Event Alarm Rules
- Adding or Modifying Metric or Event Alarm Rules
- Deleting Metric or Event Alarm Rules
-
Monitoring
- Querying Time Series Objects
- Querying Time Series Data
- Querying Metrics
- Querying Monitoring Data
- Adding Monitoring Data
- Adding or Modifying One or More Service Discovery Rules
- Deleting a Service Discovery Rule
- Querying Existing Service Discovery Rules
- Adding a Threshold Rule
- Querying the Threshold Rule List
- Modifying a Threshold Rule
- Deleting a Threshold Rule
- Querying a Threshold Rule
- Deleting Threshold Rules in Batches
-
Prometheus Monitoring
- Querying Expression Calculation Results in a Specified Period Using the GET Method
- (Recommended) Querying Expression Calculation Results in a Specified Period Using the POST Method
- Querying the Expression Calculation Result at a Specified Time Point Using the GET Method
- (Recommended) Querying Expression Calculation Results at a Specified Time Point Using the POST Method
- Querying Tag Values
- Obtaining the Tag Name List Using the GET Method
- (Recommended) Obtaining the Tag Name List Using the POST Method
- Querying Metadata
- Log
- Prometheus Instance
- Configuration Management
-
CMDB (AOM 2.0)
- Creating an Application
- Deleting an Application
- Querying the Details of an Application
- Modifying an Application
- Adding a Component
- Deleting a Component
- Querying the Details of a Component
- Modifying a Component
- Creating an Environment
- Deleting an Environment
- Querying the Details of an Environment
- Modifying an Environment
- Querying the Resource List of a Node
- Querying the Details of an Application Based on the Application Name
- Querying the Details of an Environment Based on the Environment Name
- Querying the Details of a Component Based on the Component Name
- Adding a Sub-application
- Deleting a Sub-application
- Modifying a Sub-application
-
Automation (AOM 2.0)
- Creating a Task
- Updating a Task
- Operating a Paused Task
- Obtaining the Execution Details of a Workflow
- Terminating a Task
- Querying a Script
- Querying the Script Version
- Performing Fuzzy Search on the Job Management Page
- Querying Execution Plans (Custom Templates) Based on Job ID
- Querying the Details of an Execution Plan
- Querying Tasks
- Querying the Execution History of a Task
- Executing a Workflow
-
Alarm
- Historical APIs
- Examples
- Permissions Policies and Supported Actions
- Appendix
- SDK Reference
-
Service Overview (1.0)
- What Is AOM?
- Product Architecture
- Functions
- Application Scenarios
- Edition Differences
-
Metric Overview
- Introduction
- Network Metrics and Dimensions
- Disk Metrics and Dimensions
- Disk Partition Metrics
- File System Metrics and Dimensions
- Host Metrics and Dimensions
- Cluster Metrics and Dimensions
- Container Metrics and Dimensions
- VM Metrics and Dimensions
- Instance Metrics and Dimensions
- Service Metrics and Dimensions
- Security
- Restrictions
- Privacy and Sensitive Information Protection Statement
- Relationships Between AOM and Other Services
- Basic Concepts
- Permissions
- Billing
- Change History
- Getting Started (1.0)
-
User Guide (1.0)
- Overview
- Subscribing to AOM
- Permissions Management
- Connecting Resources to AOM
- Monitoring Overview
- Alarm Management
- Resource Monitoring
- Log Management
- Configuration Management
- Resource Groups
- Auditing
- Upgrading to AOM 2.0
- Best Practices (1.0)
-
FAQs (1.0)
- User FAQs
-
Consultation FAQs
- What Is the Billing Policy of AOM?
- What Are the Usage Restrictions of AOM?
- What Are the Differences Between AOM and APM?
- How Do I Distinguish Alarms from Events?
- What Is the Relationship Between the Time Range and Statistical Cycle?
- Does AOM Display Logs in Real Time?
- Will Container Logs Be Deleted After They Are Dumped?
- How Can I Do If I Cannot Receive Any Email Notification After Configuring a Threshold Rule?
- Why Are Connection Channels Required?
-
Usage FAQs
- What Can I Do If I Do Not Have the Permission to Access SMN?
- What Can I Do If Resources Are Not Running Properly?
- How Do I Set the Full-Screen Online Duration?
- What Can I Do If the Log Usage Reaches 90% or Is Full?
- How Do I Obtain an AK/SK?
- How Can I Check Whether a Service Is Available?
- Why Is the Status of an Alarm Rule Displayed as "Insufficient"?
- Why the Status of a Workload that Runs Normally Is Displayed as "Abnormal" on the AOM Page?
- How Do I Create the apm_admin_trust Agency?
- How Do I Obtain the AK/SK by Creating an Agency?
- What Is the Billing Policy of Logs?
- Why Can't I See Any Logs on the Console?
- What Can I Do If an ICAgent Is Offline?
- Why Can't the Host Be Monitored After ICAgent Is Installed?
- Why Is "no crontab for root" Displayed During ICAgent Installation?
- Why Can't I Select an OBS Bucket When Configuring Log Dumping on AOM?
- Why Can't Grafana Display Content?
- Videos
-
More Documents
-
User Guide (1.0) (Kuala Lumpur Region)
-
Service Overview
- What Is AOM?
- Product Architecture
- Functions
- Application Scenarios
-
Metric Overview
- Introduction
- Network Metrics and Dimensions
- Disk Metrics and Dimensions
- Disk Partition Metrics
- File System Metrics and Dimensions
- Host Metrics and Dimensions
- Cluster Metrics and Dimensions
- Container Metrics and Dimensions
- VM Metrics and Dimensions
- Instance Metrics and Dimensions
- Service Metrics and Dimensions
- Restrictions
- Privacy and Sensitive Information Protection Statement
- Relationships Between AOM and Other Services
- Basic Concepts
- Permissions
- Getting Started
- Permissions Management
- Connecting Resources to AOM
- Monitoring Overview
- Alarm Management
- Resource Monitoring
- Log Management
- Configuration Management
- Auditing
- Upgrading to AOM 2.0
-
FAQs
- User FAQs
-
Consultation FAQs
- What Are the Usage Restrictions of AOM?
- What Are the Differences Between AOM and APM?
- How Do I Distinguish Alarms from Events?
- What Is the Relationship Between the Time Range and Statistical Cycle?
- Does AOM Display Logs in Real Time?
- How Can I Do If I Cannot Receive Any Email Notification After Configuring a Threshold Rule?
- Why Are Connection Channels Required?
-
Usage FAQs
- What Can I Do If I Do Not Have the Permission to Access SMN?
- What Can I Do If Resources Are Not Running Properly?
- How Do I Set the Full-Screen Online Duration?
- How Do I Obtain an AK/SK?
- How Can I Check Whether a Service Is Available?
- Why Is the Status of an Alarm Rule Displayed as "Insufficient"?
- Why the Status of a Workload that Runs Normally Is Displayed as "Abnormal" on the AOM Page?
- How Do I Create the apm_admin_trust Agency?
- What Can I Do If an ICAgent Is Offline?
- Why Is "no crontab for root" Displayed During ICAgent Installation?
- Change History
-
Service Overview
-
User Guide (2.0) (Kuala Lumpur Region)
- Service Overview
- Getting Started
- Introduction
- Access Center
- Dashboard
- Alarm Management
-
Metric Analysis
- Metric Browsing
- Prometheus Monitoring
- Resource Usage Statistics
- Log Analysis (Beta)
- Container Insights
- Infrastructure Monitoring
- Process Monitoring
- Collection Management
- Configuration Management
- Remarks
- Permissions Management
- Auditing
- Upgrading to AOM 2.0
-
FAQs
- Overview
- Dashboard
- Alarm Management
- Log Analysis
- Prometheus Monitoring
- Container Insights
- Application Monitoring
-
Collection Management
- Are ICAgent and UniAgent the Same?
- What Can I Do If an ICAgent Is Offline?
- Why Is an Installed ICAgent Displayed as "Abnormal" on the Agent Management Page?
- Why Can't I View the ICAgent Status After It Is Installed?
- Why Can't AOM Monitor CPU and Memory Usage After ICAgent Is Installed?
- How Do I Obtain an AK/SK?
- FAQs About ICAgent Installation
- Other FAQs
- Change History
-
API Reference (Kuala Lumpur Region)
- Before You Start
- API Overview
- Calling APIs
-
APIs
-
Alarm
- Querying the Event Alarm Rule List
- Adding an Event Alarm Rule
- Modifying an Event Alarm Rule
- Deleting an Event Alarm Rule
- Obtaining the Alarm Sending Result
- Deleting a Silence Rule
- Adding a Silence Rule
- Modifying a Silence Rule
- Obtaining the Silence Rule List
- Querying an Alarm Action Rule Based on Rule Name
- Adding an Alarm Action Rule
- Deleting an Alarm Action Rule
- Modifying an Alarm Action Rule
- Querying the Alarm Action Rule List
- Querying Events and Alarms
- Counting Events and Alarms
- Reporting Events and Alarms
-
Monitoring
- Querying Time Series Objects
- Querying Time Series Data
- Querying Metrics
- Querying Monitoring Data
- Adding Monitoring Data
- Adding or Modifying One or More Service Discovery Rules
- Deleting a Service Discovery Rule
- Querying Existing Service Discovery Rules
- Adding a Threshold Rule
- Querying the Threshold Rule List
- Modifying a Threshold Rule
- Deleting a Threshold Rule
- Querying a Threshold Rule
- Deleting Threshold Rules in Batches
- Log
-
Alarm
- Examples
- Permissions Policies and Supported Actions
- Appendix
- Change History
-
User Guide (ME-Abu Dhabi Region)
- Service Overview
- Getting Started
- User Guide
-
FAQs
- What Can I Do If an ICAgent Is Offline?
- Obtaining an AK/SK
- What Is the Relationship Between the Time Range and Statistical Cycle?
- What Can I Do If Resources Are Not Running Properly?
- How Can I Do If I Do Not Have the Permission to Access SMN?
- How Do I Distinguish Alarms and Events?
- Does AOM Display Logs in Real Time?
- How Can I Check Whether a Service Is Available?
- Why Is the Status of an Alarm Rule Displayed as "Insufficient"?
- Why the Status of a Workload that Runs Normally Is Abnormal on the AOM Page?
-
API Reference(ME-Abu Dhabi Region)
- Before You Start
- API Overview
- Calling APIs
-
APIs
-
Monitoring (v1)
- Querying Metrics
- Querying Monitoring Data
- Adding Monitoring Data
- Adding a Threshold Rule
- Modifying a Threshold Rule
- Querying the Threshold Rule List
- Querying a Threshold Rule
- Deleting a Threshold Rule
- Adding or Modifying One or More Application Discovery Rules
- Deleting an Application Discovery Rule
- Querying Application Discovery Rules
- Auto Scaling
- Log
-
Monitoring (v1)
- Permissions Policies and Supported Actions
- Appendix
-
User Guide (Ankara Region)
- Service Overview
- Getting Started
- User Guide
-
FAQs
- What Can I Do If an ICAgent Is Offline?
- How Do I Obtain an AK/SK?
- What Can I Do If Resources Are Not Running Properly?
- How Can I Do If I Do Not Have the Permission to Access SMN?
- How Do I Distinguish Alarms from Events?
- Does AOM Display Logs in Real Time?
- Why Is the Application Status Normal but the Component Status Abnormal?
- Best Practices
- Change History
-
API Reference (Ankara Region)
- Before You Start
- API Overview
- Calling APIs
-
APIs
-
Monitoring (v1)
- Querying Metrics
- Querying Monitoring Data
- Adding Monitoring Data
- Adding a Threshold Rule
- Modifying a Threshold Rule
- Querying the Threshold Rule List
- Querying a Threshold Rule
- Deleting a Threshold Rule
- Adding or Modifying One or More Application Discovery Rules
- Deleting an Application Discovery Rule
- Querying Application Discovery Rules
- Monitoring (v2)
- Auto Scaling
- Log
- Events/Alarms
- Agent
- Application Discovery Rules
-
Prometheus Monitoring
- Querying Expression Calculation Results in a Specified Period
- Querying the Expression Calculation Result at a Specified Time Point
- Querying Tag Values
- Obtaining the Tag Name List
- Querying Metadata
- Querying the Calculation Results of a PromQL Expression in a Specified Period Based on Prometheus Instance
- Querying the Calculation Result of a PromQL Expression at a Specified Time Point Based on Prometheus Instance
- Querying the Values of a Tag Based on Prometheus Instance
- Obtaining the Tag Name List Based on Prometheus Instance
- Querying Metadata Based on Prometheus Instance
-
Monitoring (v1)
- Appendix
- Change History
-
User Guide (1.0) (Kuala Lumpur Region)
- General Reference
Show all
Copied.
Why Cannot the Installation Script Be Downloaded When I Try to Install UniAgent on an ECS?
Symptom
During UniAgent installation on an ECS, the installation script cannot be downloaded. Message "Cloud not resolve host: aom-uniagent-xxxxxxxxxxxxxxxxxxxxxxxxxxxx" is displayed.

Possible Cause
The host cannot resolve the Object Storage Service (OBS) domain name.
Solution
Add Domain Name Service (DNS) server addresses for the ECS running Linux and then add a security group.
You can add DNS server addresses for the ECS by running commands or through the management console.
- To add DNS server addresses by running commands, perform the following steps:
- Log in to the ECS as user root.
- Run the vi /etc/resolv.conf command to open the file.
- Add nameserver xx.xx.xx to the file.
xx.xx.xx indicates private DNS server addresses. Take the CN North-Beijing1 region as an example. The private DNS server addresses are 100.125.1.250 and 100.125.21.250.Figure 2 Adding DNS server addresses (Linux)
NOTE:
Private DNS server addresses vary depending on regions. For details, see What Are Huawei Cloud Private DNS Server Addresses?
- Enter :wq and press Enter to save the settings and exit.
- To add DNS server addresses for the ECS through the management console, perform the following steps:
- In the upper left corner of the management console, select a target region and project.
- Click Service List in the upper left corner. Under Compute, select Elastic Cloud Server.
- In the ECS list, click the ECS name to go to the ECS details page.
- In the Summary tab page, click the VPC name, as shown in Figure 3.
- In the VPC list, locate the target VPC and click its name.
- In the Networking Components area, click the number following Subnets.
The Subnets page is displayed.
- In the subnet list, locate the target subnet and click its name.
- In the Gateway and DNS Information area, click
following DNS Server Address.
Figure 4 Modifying the DNS server address - Click OK.
NOTE:
The new DNS server address takes effect after the ECS is restarted.
- To add a security group through the management console, perform the following steps:
- In the upper left corner of the management console, select a target region and project.
- Click Service List in the upper left corner. Under Compute, select Elastic Cloud Server.
- In the ECS list, click the ECS name to go to the ECS details page.
- On the Security Groups tab page, click a security group name. The security group details page is displayed.
- Go to the Outbound Rules tab page and then click Add Rule.
Add a rule by referring to Table 1.
Table 1 Parameters for adding a security group rule Priority
Action
Type
Protocol & Port
Destination
Description
1
Allow
IPv4
TCP
80
100.125.0.0/16
Used to download the UniAgent installation package from the OBS bucket to the ECS and obtain the metadata and authentication information of the ECS.
1
Allow
IPv4
TCP and UDP
53
100.125.0.0/16
Used by DNS to resolve domain names, for example, resolve the OBS domain name when you download the UniAgent installation package, and resolve the UniAgent address.
1
Allow
IPv4
TCP
443
100.125.0.0/16
Used to collect monitoring data and report them to AOM.
Feedback
Was this page helpful?
Provide feedbackThank you very much for your feedback. We will continue working to improve the documentation.See the reply and handling status in My Cloud VOC.
For any further questions, feel free to contact us through the chatbot.
Chatbot