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- What's New
- Function Overview
- Service Overview
- Billing
-
Getting Started
- Using a Public NAT Gateway to Enable Servers to Share One or More EIPs to Access the Internet
- Using a Public NAT Gateway to Enable Servers to Be Accessed by the Internet
- Using a Private NAT Gateway to Connect Cloud and On-premises Networks
- Using Multiple Public NAT Gateways Together in Performance-Demanding Scenarios
-
User Guide
- Public NAT Gateways
- Private NAT Gateways
- Permissions Management
- Tag Management
- Managing Quotas
- Monitoring
- Auditing
-
Best Practices
- Enabling Private Networks to Access the Internet Using a Cloud Connection and SNAT
- Using a Public NAT Gateway and Direct Connect to Accelerate Internet Access
- Using a Private NAT Gateway and Direct Connect to Enable Communications Between a VPC and an On-premises Data Center
- Using a Public NAT Gateway and VPC Peering to Enable Communications Between VPCs and the Internet
- Preserving Your Network with NAT Gateways During Cloud Migration
-
API Reference
- Before You Start
- API Overview
- Calling APIs
- APIs of Public NAT Gateways
- APIs for Private NAT Gateways
- Application Examples
- Permissions Policies and Supported Actions
- Appendixes
- Out-of-Date APIs
- SDK Reference
-
FAQs
-
Public NAT Gateways
- What Is the Relationship Between a VPC, Public NAT Gateway, EIP Bandwidth, and ECS?
- How Does a Public NAT Gateway Offer High Availability?
- Which Ports Cannot Be Accessed?
- What Are the Differences Between Using a Public NAT Gateway and Using an EIP for an ECS?
- What Should I Do If I Fail to Access the Internet Through a Public NAT Gateway?
- Can I Change the VPC for a Public NAT Gateway?
- Does Public NAT Gateway Support IPv6 Addresses?
- What Security Policies Can I Configure to Implement Access Control If I Use a Public NAT Gateway?
- What Can I Do If Connection Between My Servers and the Internet Fails After I Add SNAT and DNAT Rules?
- Can a Public NAT Gateway Limit the Bandwidth of a Server?
- What Can I Do If the Number of Lost Packets of a Public NAT Gateway Exceeds the Threshold (or EIP Port Allocation Exceeds the Threshold)?
-
Private NAT Gateways
- How Do I Troubleshoot a Network Failure After a Private NAT Gateway Is Configured?
- How Many Private NAT Gateways Can I Buy in a VPC?
- Can I Increase the Numbers of SNAT and DNAT Rules Supported by a Private NAT Gateway?
- Can Private NAT Gateways Translate On-premises IP Addresses Connected to the Cloud Through Direct Connect?
- What Are the Differences Between Private NAT Gateways and Public NAT Gateways?
- Can a Private NAT Gateway Be Used Across Accounts?
-
SNAT Rules
- Why Do I Need SNAT?
- What Are SNAT Connections?
- What Is the Bandwidth of a Public NAT Gateway That Is Used by Servers to Access the Internet? How Do I Configure the Bandwidth?
- How Do I Resolve Packet Loss or Connection Failure Issues When Using a NAT Gateway?
- What Should I Do If My ECS Fails to Access a Server on the Public Network Through a Public NAT Gateway?
- What Are the Relationships and Differences Between the CIDR Blocks in a NAT Gateway and in an SNAT Rule?
- DNAT Rules
-
Public NAT Gateways
- Videos
- Glossary
-
More Documents
-
User Guide (ME-Abu Dhabi Region)
- Overview
- Getting Started
- Managing NAT Gateways
- Managing SNAT Rules
- Managing DNAT Rules
- Monitoring Management
-
FAQs
-
NAT Gateway
- What Is the Relationship Between VPC, NAT Gateway, EIP Bandwidth, and ECS?
- How Does A NAT Gateway Offer High Availability?
- Which Ports Cannot Be Accessed?
- What Can I Do If I Fail to Access the Internet Through the NAT Gateway?
- Can I Change the VPC for a NAT Gateway After It Is Created?
- What Is the Quota of the NAT Gateway?
-
SNAT
- Why SNAT Is Used?
- What Are SNAT Connections?
- What Is the Bandwidth of the NAT Gateway When a Server Accesses the Internet Through the NAT Gateway? Where Can I Configure the Bandwidth?
- How Do I Resolve Packet Loss or Connection Failure Issues When Using a NAT Gateway?
- What Are the Relationships and Differences Between the CIDR Blocks in a NAT Gateway and in an SNAT Rule?
- DNAT
-
NAT Gateway
- Change History
- API Reference (ME-Abu Dhabi Region)
-
User Guide (Paris Region)
- Overview
-
Getting Started
- Allowing a Private Network to Access the Internet Using SNAT
- Allowing Internet Users to Access a Service in a Private Network Using DNAT
- Allowing On-Premises Servers to Communicate with the Internet
- Using Private NAT Gateways to Enable Communications Between Cloud and On-premises Networks
- Using Multiple Public NAT Gateways Together in Performance-Demanding Scenarios
- Public NAT Gateways
- Private NAT Gateways
- Permissions Management
- Monitoring
-
FAQs
-
Public NAT Gateways
- What Is the Relationship Between a VPC, Public NAT Gateway, EIP Bandwidth, and ECS?
- How Does a Public NAT Gateway Offer High Availability?
- Which Ports Cannot Be Accessed?
- What Are the Differences Between Using a NAT Gateway and Using an EIP for an ECS?
- What Should I Do If I Fail to Access the Internet Through a NAT Gateway?
- Can I Change the VPC for a NAT Gateway?
- What Is the Quota of the NAT Gateway?
- Can I Update NAT Gateways and SNAT Rules?
- Does NAT Gateway Support IPv6 Addresses?
- What Security Policies Can I Configure to Implement Access Control If I Use a NAT Gateway?
- What Can I Do If Connection Between My Servers and the Internet Fails After I Add SNAT and DNAT Rules?
-
Private NAT Gateways
- How Do I Troubleshoot a Network Failure After a Private NAT Gateway Is Configured?
- How Many Private NAT Gateways Can I Create in a VPC?
- Can I Increase the Numbers of SNAT and DNAT Rules Supported by a Private NAT Gateway?
- Can an SNAT Rule and a DNAT Rule of a Private NAT Gateway Share the Same Transit IP Address?
- Can Private NAT Gateways Translate On-premises IP Addresses Connected to the Cloud Through Direct Connect?
- What Are the Differences Between Private NAT Gateways and Public NAT Gateways?
- Can a Private NAT Gateway Be Used Across ?
-
SNAT Rules
- Why Do I Need SNAT?
- What Are SNAT Connections?
- What Is the Bandwidth of a NAT Gateway That Is Used by Servers to Access the Internet? How Do I Configure the Bandwidth?
- How Do I Resolve Packet Loss or Connection Failure Issues When Using a NAT Gateway?
- What Should I Do If My ECS Fails to Access a Server on the Public Network Through a NAT Gateway?
- What Are the Relationships and Differences Between the CIDR Blocks in a NAT Gateway and in an SNAT Rule?
- DNAT Rules
-
Public NAT Gateways
- Change History
- API Reference (Paris Region)
-
User Guide (Kuala Lumpur Region)
- Overview
- Getting Started
- Managing NAT Gateways
- Managing SNAT Rules
- Managing DNAT Rules
- Permissions Management
- Monitoring Management
-
FAQs
- NAT Gateway
-
SNAT
- Why Is SNAT Used?
- What Are SNAT Connections?
- What Is the Bandwidth of the NAT Gateway When a Server Accesses the Internet Through the NAT Gateway? Where Can I Configure the Bandwidth?
- How Do I Resolve Packet Loss or Connection Failure Issues When Using a NAT Gateway?
- What Are the Relationships and Differences Between the CIDR Blocks in a NAT Gateway and in an SNAT Rule?
- DNAT
- Change History
- API Reference (Kuala Lumpur Region)
-
User Guide (Ankara Region)
- Service Overview
- Getting Started
- Public NAT Gateways
- Private NAT Gateways
- Permissions Management
- Monitoring
-
FAQs
- Public NAT Gateways
-
Private NAT Gateways
- How Do I Troubleshoot a Network Failure After a Private NAT Gateway Is Configured?
- How Many Private NAT Gateways Can I Create in a VPC?
- Can Private NAT Gateways Translate On-premises IP Addresses Connected to the Cloud Through Direct Connect?
- What Are the Differences Between Private NAT Gateways and Public NAT Gateways?
- Can a Private NAT Gateway Be Used Across Accounts?
- SNAT Rules
- DNAT Rules
- Change History
-
API Reference (Ankara Region)
- Before You Start
- API Overview
- Calling APIs
- APIs for Public NAT Gateways
- Private Nat API
- Permissions Policies and Supported Actions
- Common Parameters
- Change History
-
User Guide (ME-Abu Dhabi Region)
- General Reference
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Creating Alarm Rules
Scenarios
You can set NAT gateway alarm rules to customize the monitored objects and notification policies. Then, you can learn NAT gateway running status in a timely manner.
Procedure
- Log in to the management console.
- Click in the upper left corner and select the desired region and project.
- Under Management & Governance, select Cloud Eye.
- In the left navigation pane, choose Alarm Management > Alarm Rules.
- On the Alarm Rules page, click Create Alarm Rule and set required parameters to create an alarm rule, or modify an existing alarm rule.
- On the Create Alarm Rule page, follow the prompts to configure the parameters.
- Set the alarm rule name and description.
Table 1 Configuring the alarm rule name and description Parameter
Description
Name
Specifies the alarm rule name. The system generates a random name, which you can modify.
Example value: alarm-b6al
Description
(Optional) Provides supplementary information about the alarm rule.
Enterprise Project
Specifies the enterprise project the alarm rule belongs to. Only users with the enterprise project permissions can view and manage the alarm rule. To create an enterprise project, see Creating an Enterprise Project.
- Select an object to be monitored and set alarm rule parameters.
Table 2 Parameters Parameter
Description
Example Value
Resource Type
Specifies the type of the resource the alarm rule is created for.
NAT Gateway
Dimension
Specifies the metric dimension of the selected resource type.
Public NAT Gateway
Monitoring Scope
Specifies the monitoring scope the alarm rule applies to. You can select Resource groups or Specific resources.
NOTE:- If Resource groups is selected and any resource in the group meets the alarm policy, an alarm is triggered.
- If you select Specific resources, select one or more resources and click to add them to the box on the right.
Specific resources
Method
There are two options: Use template or Create manually.
Create manually
Template
Specifies the template to be used.
You can select a default alarm template or customize a template.
N/A
Alarm Policy
Specifies the policy for triggering an alarm.
If you set Resource Type to Website Monitoring, Log Monitoring, Custom Monitoring, or a specific cloud service, whether to trigger an alarm depends on whether the metric data in consecutive periods reaches the threshold. For example, Cloud Eye triggers an alarm if the raw data of the SNAT connections of the monitored object is 8000 or more for three consecutive 1-minute periods.
N/A
Alarm Severity
Specifies the alarm severity, which can be Critical, Major, Minor, or Informational.
Major
- Configure the alarm notification.
Table 3 Alarm notification parameters Parameter
Description
Alarm Notification
Specifies whether to notify users when alarms are triggered. Notifications can be sent by email, text message, or HTTP/HTTPS message.
Notification Object
Specifies the object to which alarm notifications will be sent. You can select the account contact or a topic.
- Account contact: Enter the phone number and email address of the registered account.
- A topic is used to publish messages and subscribe to notifications. If the required topic is unavailable, create one first and add subscriptions to it. For details, see the Cloud Eye User Guide.
Validity Period
Cloud Eye sends notifications only within the validity period specified in the alarm rule.
If Validity Period is set to 08:00-20:00, Cloud Eye sends notifications only within the time window.
Trigger Condition
Specifies the condition for triggering the alarm notification. You can select Generated alarm (when an alarm is generated), Cleared alarm (when an alarm is cleared), or both.
- Set the alarm rule name and description.
- After the parameters are set, click Create.
After the alarm rule is set, the system automatically notifies you when an alarm is triggered.
For more details, see Alarm Rules.
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