Manage ALB quotas - Server Load Balancer - Alibaba Cloud Documentation Center

Alibaba Cloud allows you to view and manage quotas of your Alibaba Cloud services. You can obtain usage information, apply for increases on quotas, and create alert rules for quotas. This topic describes the prerequisites and procedures for managing Application Load Balancer (ALB) quotas.

Background information

Quota Center allows you to manage the quotas of various Alibaba Cloud services in a centralized manner. ALB and many other Alibaba Cloud services work with Quota Center. If you are using multiple Alibaba Cloud services and want to manage the quotas of all your cloud services in one console, you can use Quota Center.

Alternatively, you can individually manage ALB quotas by using the quota management feature provided in the ALB console. If you want to manage the quotas of only your ALB service, you can use quotas by using the quota management feature provided in the ALB console.

Prerequisite

By default, only Alibaba Cloud accounts are authorized to manage quotas in Quota Center. For RAM users to manage quotas, you must grant RAM users the AliyunQuotasFullAccess permission.

View quotas.

You can view the quotas of ALB by using one of the following methods:

Log on to the Quota Center console and view the quotas.
Log on to the SLB console and view the quotas on the Quota Management page.
View quotas and their default values on the Quotas page in the CLB documentation.

Procedure (Quota Center)

Log on to the Quota Center console.
Query the quota or privilege that you want to view.
- View general quotas
  1. In the left-side navigation pane, choose Products > General Quotas.
  2. On the Products with General Quotas page, click Application Load Balancer in the Networking section.
  3. On the General Quotas page, enter a keyword to search for the quota that you want to view. Then, you can view the name, description and usage of the quota.
- View API rate limits
  1. In the left-side navigation pane, choose Products > API Rate Limits.
  2. On the Products with API Rate Limits page, click Application Load Balancer in the Networking section.
  3. On the API Rate Limits page, you can filter API rate limits by keyword or region. You can also view detailed information about each API rate limit, such as the version and total quota.
- View privileges
  1. In the left-side navigation pane, choose Products > Privileges.
  2. On the Products with Privileges page, click Application Load Balancer in the Networking section.
  3. On the Privileges page, you can view detailed information about each privilege, such as the name, description, and validity period.

Procedure (SLB console)

Log on to the SLB console. In the left-side navigation pane, click Quota Center.
On the Quota Center page, click the ALB tab. Then, you can view quotas and privileges.
- View general quotas
  1. In the Quota Type section, click the General Quota tab.
  2. You can filter general quotas by keyword and view detailed information about each general quota, such as the name, description, and usage.
- View API rate limits
  1. In the Quota Type section, click the API Rate Limit tab.
  2. You can filter API rate limits by keyword or region. You can also view detailed information about each API rate limit, such as the version and total quota.
- View privileges
  1. In the Quota Type section, select Privilege.
  2. You can view detailed information about each privilege, such as the name, description, and validity period.

Adjust quotas

Most of the ALB quotas provided are adjustable. If the default quota is unable to meet your business requirements, you can apply for a quota increase by using one of the following methods:

Use the Quota Center console.
Use the quota management feature provided in the SLB console.

If the application is successful, the increased quota limit will be displayed in the Quota Center console and the service console.

Procedure (Quota Center)

Log on to the Quota Center console.
Find the quota or privilege and request an increase.
- Increase a general quota
  1. In the left-side navigation pane, choose Products > General Quotas.
  2. On the Products with General Quotas page, click Application Load Balancer in the Networking section.
  3. On the General Quotas page, find the general quota that you want to increase and click Apply in the Actions column.
  4. In the Apply for Quotas dialog box, configure the Applied Quotas and Reason parameters, and click OK.
    Note
    Applications are approved by the technical support team for each cloud service. When you apply for a quota increase, provide as much information as possible.
    The more justification provided, the more likely your application will be approved. Application results are sent to you by text messages and emails.
    The more justification provided, the more likely your application will be approved.
  5. After you apply for a privilege, you can click Application Records in the left-side navigation pane to view the status of the application.
    If the application is in the Approved state, the privilege is acquired.
- Apply for a privilege
  1. In the left-side navigation pane, choose Products > Privileges.
  2. On the Products with Privileges page, click Application Load Balancer in the Networking section.
  3. On the Privileges page, find the privilege that you want to acquire and click Apply in the Actions column.
  4. In the Apply for Privileges dialog box, set the Quota Value, Time, Reason, and Notify Result parameters. Then, click OK.
    Note
    If you do not specify a start time for the validity period, the default start time is the time when the quota increase application is submitted. If you do not specify an end time for the validity period, the default end time is 99 years after the start time. The end time must be later than the start time.
    Applications are reviewed and approved by the technical support team for each cloud service. To increase the success rate of your application, you must specify a reasonable quota value and a detailed reason when you submit an application.
    Application results are sent to you by using text messages and emails.
  5. After you apply for a privilege, you can click Application Records in the left-side navigation pane to view the status of the application.
    If the application is in the Approved state, you are granted the privilege.

Procedure (SLB console)

Log on to the SLB console. In the left-side navigation pane, click Quota Center.
On the Quota Center page, click the ALB tab.
On the ALB tab, apply for a quota increase or a privilege.
- Increase a general quota
  1. In the Quota Type section, click the General Quota tab.
  2. Find the quota that you want to adjust and click Apply in the Actions column.
  3. In the Apply for Quotas dialog box, configure the Applied Quotas and Reason parameters and click OK.
    Note
    Applications are approved by the technical support team for each cloud service. When you apply for a quota increase, provide as much information as possible. The more justification provided, the more likely your application will be approved.
    Application results are sent to you by text message and email.
    The more justification provided, the more likely your application will be approved.
  4. After you submit the application, you can choose > Application Records in the Actions column to view the progress.
    If the application is in the Approved state, the quota is increased.
- Apply for a privilege
  1. In the Quota Type section, click Privilege.
  2. Find the privilege that you want to apply for and click Apply in the Actions column.
  3. In the Apply for Privileges dialog box, configure the Quota Value, Time, Reason, and Notify Result parameters and click OK.
    Note
    If you do not specify a start time for the validity period, the default start time is the time when the quota increase application is submitted. If you do not specify an end time for the validity period, the default end time is 99 years after the start time. The end time must be later than the start time.
    Applications are reviewed and approved by the technical support team for each cloud service. To increase the success rate of your application, you must specify a reasonable quota value and a detailed reason when you submit an application.
    Application results are sent to you by using text messages and emails.
  4. To view the status of the application, click Application Records in the Actions column. If the application is in the Approved state, you are granted the privilege.

Create an alert rule for a quota item

You can create alert rules for some quota items by specifying a threshold for quota usage or available quota. If the usage of a quota reaches the specified threshold, the system sends an alert notification to the callback URL that you specified in the alert rule through an HTTP POST request. We recommend that you take the alerts into consideration and apply for a quota increase in advance to avoid unexpected business interruptions.

You can create alert rules for the following quota items

Category	Quota	Description
Additional certificates	alb_quota_loadbalancer_certificates_num_basic_edition	Maximum number of additional certificates, excluding default certificates, supported by each basic ALB instance
	alb_quota_loadbalancer_certificates_num_standard_edition	Maximum number of additional certificates, excluding default certificates, supported by each standard ALB instance
	alb_quota_loadbalancer_certificates_num_standardwithwaf_edition	Maximum number of additional certificates, excluding default certificates, supported by each WAF-enabled ALB instance
Forwarding rules	alb_quota_loadbalancer_rules_num_basic_edition	Maximum number of forwarding rules supported by each basic ALB instance
	alb_quota_loadbalancer_rules_num_standard_edition	Maximum number of forwarding rules supported by each standard ALB instance
	alb_quota_loadbalancer_rules_num_standardwithwaf_edition	Maximum number of forwarding rules supported by each WAF-enabled ALB instance
Backend servers	alb_quota_loadbalancer_servers_num_basic_edition	Maximum number of backend servers supported by each basic ALB instance
	alb_quota_loadbalancer_servers_num_standard_edition	Maximum number of backend servers supported by each standard ALB instance
	alb_quota_loadbalancer_servers_num_standardwithwaf_edition	Maximum number of backend servers supported by each WAF-enabled ALB instance
Listeners	alb_quota_loadbalancer_listeners_num_basic_edition	Maximum number of listeners supported by each basic ALB instance
	alb_quota_loadbalancer_listeners_num_standard_edition	Maximum number of listeners supported by each standard ALB instance
	alb_quota_loadbalancer_listeners_num_standardwithwaf_edition	Maximum number of listeners supported by each WAF-enabled ALB instance
Server groups	alb_quota_servergroup_attached_num	Maximum number of listeners or forwarding rules supported by each server group
Backend servers (IP addresses)	alb_quota_server_added_num	Maximum number of times that a backend server (IP address) can be added to a server group
Regions	alb_quota_loadbalancers_num	Maximum number of ALB instances supported by each region

Procedure (Quota Center)

Log on to the Quota Center console.
Use one of the following methods to create an alert rule:
- Method 1: On the Products with General Quotas page, click Application Load Balancer in the Networking section.
- Method 2: In the left-side navigation pane, choose Alarm Rules. On the Alarm Rules page, on the General Quotas tab, click Create Quota Alert Rule. On the Create Alarm Rule page, select Application Load Balancer from the Product Name drop-down list.

Set Quota Category to General Quotas and select the target quota from the Quota Name drop-down list.

In the Alarm Rule section, configure the parameters by referring to the following table. After alarm rules are set, click Confirm.

Parameter	Description	Example
Alarm Rule Name	The name of the alert rule.	Maximum number of vCPUs for preemptible instances for limited purchase
Alarm Metric	The metric used by the alert rule. Valid values: Quotas Used Quotas Percentage of Used Quotas(%) Percentage of Available Quotas(%)	Percentage of Used Quotas(%)
Threshold and Alert Level	The alert level and the threshold corresponding to this level. The following default notification methods are set for different alert levels: Critical: Email and Callback Warning: Email and Callback Info: Email and Callback You also need to select the number of times that the threshold is reached before an alert is triggered. Valid values: 1 Consecutive Cycle, 3 Consecutive Cycles, 5 Consecutive Cycles, 10 Consecutive Cycles, 15 Consecutive Cycles, 30 Consecutive Cycles, 60 Consecutive Cycles, 70 Consecutive Cycles, 90 Consecutive Cycles, 120 Consecutive Cycles, and 180 Consecutive Cycles. You can configure settings for different alert levels. CloudMonitor will generate alerts at a specific level based on the threshold corresponding to the level and sends alert notifications using specified methods.	Alert level: Info. The default notification method for this alert level is Email and Callback. Threshold: ≥ 80%.
Mute For	The interval at which alert notifications are sent if the generated alert is not cleared. The value also indicates the silence period. Valid values: 5 minutes, 15 minutes, 30 minutes, 60 minutes, 3 hours, 6 hours, 12 hours, and 24 hours. An alert notification is sent when a metric reaches the alert threshold. During the silence period, if the metric repeatedly exceeds the alert threshold, no new alert notification is sent. After the silence period ends, if the metric does not return to the normal state, a new alert notification is sent. For example, if you set the Mute For parameter to 24 hours, CloudMonitor sends an alert notification for a generated alert, and the alert remains unresolved, CloudMonitor sends a new alert notification after 24 hours.	5 minutes
Effective Time	The period during which the alert rule takes effect. The alert rule takes effect and generates alerts only at the specified time on the specified days of a week.	Cycle: Monday to Sunday Time: 00:00 to 23:59
Alarm Contact Group	The contact group to which alert notifications are sent. Alert notifications for an application group are sent to the alert contact in the alert contact group. An alert contact group is a group of alert contacts, containing one or more alert contacts. For more information, see Create an alert contact or alert contact group.	Quota Administrators of ECS Instance Types
Alarm Callback	The URL that is accessible over the Internet to receive the alert information pushed by CloudMonitor by using HTTP POST requests. Only the HTTP protocol is supported. To test the connectivity of the callback URL, perform the following operations: Click Test next to the callback URL. On the Test Result page, check the connectivity of the callback URL based on the returned status code and test result details. Note You can also set the Language parameter and then click Test again to obtain test result details of the specified language. Click Close.	http://alert.aliyun.com:8080/callback
Labels	The tags of the alert rule. A tag consists of a tag key and a tag value. You can specify up to six tags for an alert rule.	`k1,v1`
Push Channel	The Alibaba Cloud service used to deliver alert information. Valid values: Simple Log Service If you turn on Simple Log Service, when an alert is generated, alert information is sent to a Logstore in Simple Log Service. you must configure the Region, ProjectName, and Logstore parameters. For information about how to create a project and a Logstore, see Getting Started. Message Service - topic If you turn on Message Service - topic, when an alert is generated, alert information is sent to a topic in Simple Message Queue (formerly MNS). In this case, you must specify a region and a topic.Simple Message Queue (formerly MNS) For more information, see Create a topic. Function Compute If you turn on Function Compute, when an alert is generated, alert information is sent to Function Compute to be formatted. In this case, you must specify a region, a service, and a function. For information about how to create a service and a function, see Quickly create a function.	Turn off all switches
Recovery Notification	Specifies whether to send notifications when alerts are cleared. The switch is turned on by default.	Turn on the switch
Method to handle alarms when no monitoring data is found	The method used to handle alerts when no monitoring data is available. Valid values: Do not do anything (default) Send alarm notifications Treated as normal	Do not do anything

In the left-side navigation pane, choose Alarm Rules. On the Alarm Rules page, view the details about the alert rules you configured.
On the Alarm Rules page, you can manage alert rules. For example, you can view, modify, and delete alert rules.
Optional. View the result of an alert callback.
If you configure the Alert Callback parameter, you can view the alert callback records and applications that are automatically submitted to increase the quota after the alert callback succeeds.
1. In the left-side navigation pane, choose Alarm History to view the alert callback records.
  If Alarm Callback is displayed in the Notification Methods column of the record, the alert callback succeeded.
2. In the left-side navigation pane, choose Application Records to view the application that is automatically submitted to increase the quota.

Procedure (SLB console)

Go to the Quota Center page of the SLB console.
On the Quota Center page, click the ALB tab.
On the General Quota tab, find the quota that you want, then click Create Alert Rule in the Actions column.
In the Create Alarm Rule panel, configure the parameters and click Confirm.
1. Basic Information: Enter the name of the alarm.
2. Alarm Object: Quota details.
3. Alarm Rule:
  1. Alarm Metric: Choose a metric from among quota, quota usage, percentage of used quotas, and percentage of available quotas.
  2. Threshold and Alarm Level: Choose a level from among critical, warn, and info. Each level has a different notification method.
4. Notification Type: When the alarm is triggered, CloudMonitor sends a notification to your specified URL.
Refresh the page to go back to the General Quota tab. Find the quota you want to and click Alarm Rules in the Actions column.
On the Alarm Rules page, you can view the alert rules.

Create a quota template

Before you use a quota template, make sure that the following requirements are met:

An enterprise management account is used.
Resource directory and the quota template feature are enabled.

Procedure (Quota Center)

Log on to the Quota Center console.
In the left-side navigation pane, click Quota Templates. On the Quota Templates page, click Enable Quota Template.
Skip this step if you have already enabled quota templates.
In the Enable Quota Template message, click OK.
Skip this step if you have already enabled quota templates.
In the left-side navigation pane, choose Products > General Quotas.
On the Products with General Quotas page, click Application Load Balancer in the Networking section.
On the General Quotas page, find the general quota that you want to manage and click Add to Quota Template in the Actions column.
In the Add to Quota Template dialog box, configure the Applied Quotas parameter and click OK.

Procedure (ALB console)

Go to the Quota Management page of the SLB console.
On the Quota Management page, click the ALB tab.
On the Quota Management page, find the quota that you want to manage and click Add to Quota Template in the Actions column.
In the Add to Quota Template dialog box, configure the Applied Quotas parameter and click OK.