NLB quotas - Server Load Balancer - Alibaba Cloud Documentation Center

Alibaba Cloud service quotas are typically based on accounts or regions and include general quotas, API rate limits, and privilege quotas.

General quotas: the maximum amount of cloud resources that an Alibaba Cloud account can use.
API rate limits: the frequency at which an Alibaba Cloud account can call the API operations of an Alibaba Cloud service. This is also known as a queries per second (QPS) limit.
Privilege quotas: permissions granted to an Alibaba Cloud account by Alibaba Cloud, such as the right to use specific whitelist features.

Log on to the Quota Center console or the Quota Management page in the Server Load Balancer console to view quotas or request quota increases.

General quotas

The default quota values in this topic are for reference only. For the actual default values, see the information in the console.

NLB instance quotas

Quota name	Description	Default value	Adjustable
nlb_quota_loadbalancers_num	The maximum number of NLB instances that can be created in each region within an Alibaba Cloud account.	60	Yes
nlb_quota_loadbalancer_eci_servers_num	The maximum number of ECI instances that can be attached as backend servers to each NLB instance.	1,600	No
nlb_quota_loadbalancer_noeci_servers_num	The maximum number of ECS instances, ENIs, or IP addresses that can be attached as backend servers to each NLB instance.	400	Yes
nlb_quota_loadbalancer_listeners_num	The maximum number of listeners that can be added to each NLB instance.	50	Yes
nlb_quota_loadbalancer_certificates_num	The maximum number of additional certificates that can be added to each NLB instance. This does not include the default certificate.	25	Yes

Server group quotas

Quota name	Description	Default value	Adjustable
nlb_quota_servergroups_num	The maximum number of NLB server groups that can be created in each region within an Alibaba Cloud account.	3,000	No
nlb_quota_servergroup_eci_servers_num	The maximum number of ECI instances that can be added to each NLB server group.	1,600	No
nlb_quota_servergroup_noeci_servers_num	The maximum number of ECS instances, ENIs, or IP addresses that can be added to each NLB server group.	400	Yes
nlb_quota_server_added_num	The maximum number of times that a backend server, including an IP address, can be added to NLB server groups.	200	Yes
nlb_quota_servergroup_attached_num	The maximum number of listeners to which an NLB server group can be associated.	50	Yes

Security policy quotas

Quota name	Description	Default value	Adjustable
nlb_quota_securitypolicies_num	The maximum number of custom security policies that can be created for NLB in each region within an Alibaba Cloud account.	50	No

API rate limits

You can view the API rate limits in one of the following ways:

On the API Rate Limits page in Quota Center, view the rate limits for the API operations of NLB.
On the Quota Management page, click Network Load Balancer (NLB) and then click API Rate Limit to view the rate limits for the API operations of NLB.

Privilege quotas

The default value of a privilege quota is 0. This means the feature is unavailable by default. You can use the feature only after you are granted authorization by Alibaba Cloud.

Quota ID	Description	Request
nlb.white_list/ip_target_cidr_not_limited	No CIDR block limit for server groups of the IP type.	Request

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.

Create an alert rule for a quota item

You can create an alert rule for an NLB quota item. You can set a threshold for the used quota or the remaining quota. When the used or remaining quota reaches the preset threshold, an alert message is sent to the specified webhook address through an HTTP POST request. You can then request a quota increase based on the alert message to prevent business interruptions.

Create an alert rule in Quota Center

Log on to the Quota Center console.
Use one of the following methods to go to the page for creating an alert rule.
- Method 1: On the General Quota Products page, find the Network section and click Network Load Balancer (NLB) to go to the General Quotas page.
- Method 2: In the navigation pane on the left, click Quota Alerts. On the Quota Alerts page, click Create Quota Alert. On the General Quotas page, select Network Load Balancer (NLB).

On the General Quotas page, find the quota item and click Create Alert in the Actions column.
In the Create Quota Alert panel, create an alert for the quota item. When the quota reaches the preset threshold, you will receive an alert notification. For more information, see Create a Quota Alert.
In the navigation pane on the left, click Quota Alerts to view the created alert rule.
On the Quota Alerts page, you can manage all created alert rules. For example, you can view, modify, or delete alert rules.
(Optional) View the alert callback result.
If you configure an alert callback, you can view the alert callback records and automatic quota increase requests after the callback is successful.
1. In the navigation pane on the left, click Alert History to view alert callback records.
  If Alert Callback is included in the Notification Channel column for an alert history record, the alert callback is successful.
2. In the navigation pane on the left, click Application History to view automatic quota increase requests.

Create an alert rule in the Server Load Balancer console

Log on to the Quota Management page in the Server Load Balancer console.
On the Quota Management page, click the Network Load Balancer (NLB) tab.
Set Quota Type to General Quota, find the general quota item, and click Create Alert in the Actions column.
In the Create Quota Alert panel, create an alert rule for the quota item. When the quota reaches the preset threshold, you will receive an alert notification.
In the Actions column of the quota item, click > Alert Items.
In the Alert List dialog box, view the created alert rule.

Create a quota template

After you enable and join a quota template, if the management account of a resource directory adds a new member, the quota template automatically submits quota increase requests for the new member. Existing members are not affected. Quota templates allow you to request increases for multiple quota items at a time. This improves the efficiency and automation of quota management for your entire organization.

Before you create a quota template, make sure that:

You are logged on with a management account.
You have enabled Resource Directory.

Create and join a quota template in Quota Center

Log on to the Quota Center console.
In the navigation pane on the left, click Quota Templates. On the Quota Templates page, click Enable Quota Template.
In the Enable Quota Template dialog box, click OK.
If you have already enabled quota templates, skip this step.
In the left-side navigation pane, choose Products > General Quotas.
On the General Quota Products page, find the Network section and click NLB.
On the General Quotas page, find the quota item and click Add To Quota Template in the Actions column.
In the Add To Quota Template dialog box, set Requested Quota for the quota item and click OK.

Join a quota template in the Server Load Balancer console

Log on to the Quota Management page in the Server Load Balancer console.
On the Quota Management page, click the NLB tab.
On the NLB tab, find the quota item and click Add To Quota Template in the Actions column.
In the Add To Quota Template dialog box, set Requested Quota for the quota item and click OK.