NLB quotas are scoped by account or region. Each quota has a default value, is either adjustable or fixed, and falls into one of three categories: general quotas, API rate limits, or privilege quotas. Use the Quota Center console or the Quota Management pageQuota Management page in the Server Load Balancer console to view your current quotas or submit a quota increase request.
Quota types
General quotas: the maximum amount of cloud resources an Alibaba Cloud account can use.
API rate limits: the maximum frequency at which an Alibaba Cloud account can call API operations of a cloud service, also expressed as a queries per second (QPS) limit.
Privilege quotas: permissions granted to an Alibaba Cloud account by Alibaba Cloud, such as access to specific whitelist features. The default value of a privilege quota is 0, meaning the feature is unavailable until Alibaba Cloud grants authorization.
General quotas
The default quota values listed here are for reference only. For the actual default values that apply to your account, check 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 Elastic Container Instance (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, Elastic Network Interfaces (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 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 an NLB server group can be associated with. | 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
View the API rate limits for NLB using either of the following methods:
In Quota Center, go to the API Rate Limits page to see the rate limits for NLB API operations.
On the Quota Management pageQuota Management page, click the NLB tab, then click API Rate Limit.
Privilege quotas
| 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 can manage quotas in Quota Center. To allow RAM users to manage quotas, grant them the AliyunQuotasFullAccess permission.
Create an alert rule for a quota
Set an alert threshold on the used quota or the remaining quota for an NLB quota item. When the threshold is reached, an alert message is sent to the specified webhook address via an HTTP POST request, so you can submit a quota increase request before your business is affected.
Create an alert rule in Quota Center
Log on to the Quota Center console.
Go to the page for creating an alert rule using either of the following methods:
Method 1: On the Products with General Quotas page, find the Networking section and click Network Load Balancer. On the General Quotas page, find the quota item and click Create Alarm Rule in the Actions column.
Method 2: In the left navigation pane, click Alarm Rules. On the Alarm Rules page, click Create Quota Alarm Rule.
On the Create Alarm Rule page, configure the alert. For more information, see Create a Quota Alert.
In the left navigation pane, click Alarm Rules to view the alert rule you created. On the Alarm Rules page, you can view, modify, or delete alert rules.
(Optional) View the alert callback result. If you configured an alert callback, you can view the callback records and automatic quota increase requests after a successful callback.
In the left navigation pane, click Alarm History to view alert callback records. If Notification Methods for a record includes alert callback, the callback was successful.
In the left navigation pane, click Application Records to view automatic quota increase requests.
Create an alert rule in the Server Load Balancer console
Log on to the Quota Management pageQuota Management page in the Server Load Balancer console.
On the Quota Center page, click the NLB tab.
Set Quota Type to General Quota, find the quota item, and click Create Alarm Rule in the Actions column.
On the Create Alarm Rule page, create an alert rule for the quota item.
In the Actions column of the quota item, click  > Alarm Rules.
On the Alarm Rules page, view the alert rule you created.
Create a quota template
A quota template automatically submits quota increase requests for new members when a management account in a resource directory adds them. Existing members are not affected. With a quota template, you can request increases for multiple quota items at once, making quota management more efficient across your 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 left navigation pane, 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 navigation pane, choose Products > General Quotas.
On the Products with General Quotas page, find the Networking section and click Network Load Balancer.
On the General Quotas page, find the quota item and click Create Quota Template in the Actions column.
In the Create Quota Template dialog box, set Applied Quotas for the quota item and click OK.
Join a quota template in the Server Load Balancer console
Log on to the Quota Management pageQuota Management page in the Server Load Balancer console.
On the Quota Center page, click the NLB tab.
Find the quota item and click Create Quota Template in the Actions column.
In the Create Quota Template dialog box, set Applied Quotas for the quota item and click OK.