Microservices Engine (MSE) enforces resource quotas for each Alibaba Cloud account. A quota defines the maximum number of resources you can create or operations you can perform. You can use Quota Center to view current usage, request quota increases, and set up quota alerts.
Default resource quotas
Microservice registry
| Quota name | Quota code | Default value | Adjustable maximum | Description |
|---|---|---|---|---|
| Maximum number of clusters per account | q_registry_clusters | 100 | 200 | Destroyed instances are not counted. |
| Size of a single Nacos configuration | q_nacos_config_size | 100 KB | 1 MB | |
| Length of the metadata of a Nacos instance | q_nacos_meta_size | 4,096 bytes | 8,192 bytes | |
| Number of namespaces in a serverless Nacos instance | q_nacos_serverless_namespaces | 20 | 30 | |
| Number of namespaces in a common Nacos instance of the Developer Edition | q_nacos_dev_namespaces | 20 | 30 | |
| Number of low-specifications namespaces in a common Nacos instance of the Professional Edition | _nacos_pro_low_namespaces | 20 | 30 | A single node has fewer than 4 cores. |
| Number of high-specifications namespaces in a common Nacos instance of the Professional Edition | q_nacos_pro_high_namespaces | 40 | 80 | A single node has 4 or more cores. |
| Number of low-specifications namespaces in a common Nacos instance of the Enterprise Edition | q_nacos_platinum_low_namespaces | 50 | 100 | Small.Platinum.x2 |
| Number of high-specifications namespaces in a common Nacos instance of the Enterprise Edition | q_nacos_platinum_high_namespaces | 100 | 160 | Medium.Platinum.x1 and higher specifications |
| Number of configurations in a serverless Nacos instance | q_nacos_serverless_cluster_configs | 1,000 | 2,000 | |
| Number of configurations in a cluster for a common Nacos instance of the Developer Edition | q_nacos_dev_cluster_configs | 1,000 | 2,000 | |
| Number of configurations in a low-specifications cluster for a common Nacos instance of the Professional Edition | q_nacos_pro_low_cluster_configs | 1,000 | 2,000 | A single node has fewer than 4 cores. |
| Number of configurations in a high-specifications cluster for a common Nacos instance of the Professional Edition | q_nacos_pro_high_cluster_configs | 5,000 | 20,000 | A single node has 4 or more cores. |
| Number of low-specifications configurations in a common Nacos instance of the Enterprise Edition | q_nacos_pro_platinum_low_cluster_configs | 5,000 | 20,000 | Small.Platinum.x2 |
| Number of high-specifications configurations in a common Nacos instance of the Enterprise Edition | q_nacos_pro_platinum_high_cluster_configs | 20,000 | 50,000 | Medium.Platinum.x1 and higher specifications |
| Number of Simple Authentication and Security Layer (SASL) users in a ZooKeeper instance | q_zk_sasl_user_count | 10 | 50 |
Microservices governance
| Quota name | Quota code | Default value | Adjustable maximum |
|---|---|---|---|
| Number of namespaces | q_msc_namespaces | 200 | 300 |
| Number of applications in a lane group | q_msc_group_apps | 100 | 150 |
| Number of lane groups in a namespace | q_msc_namespace_lane_group | 50 | 70 |
| Number of lanes in a lane group | q_msc_lane | 50 | 70 |
| Number of routes in a lane when the MSE gateway is the ingress application during an end-to-end canary release | q_msc_lane_route | 50 | 70 |
Request a quota increase
If you need more resources than the default quota allows, request an increase through Quota Center.
Log on to the Quota Center console.
In the left-side navigation pane, choose Products > General Quotas. On the Products with General Quotas page, select Application Service from the Category drop-down list and click the mse-governance or mse-registry card.
On the General Quotas page, view or increase resource quotas.
View resource quotas: The Total Quotas column shows the maximum allowed quantity. The In Use column shows current usage.
Request a quota increase: Click Apply in the Actions column. In the Apply for Quotas dialog box, configure the parameters and click OK.
Keep the following in mind when you adjust quotas:
Quota changes for Nacos instances take time to propagate. Adjust quotas only when the instance is in the running state.
When you upgrade, downgrade, or change the instance type, check the corresponding quota values and adjust them as needed.
The configuration quota for existing Nacos instances is set to an optimal value based on actual resource usage to maintain stability. To increase the quota, submit a request through the Quota Center console. New instances are subject to the configured quota limits.
References
Quota alerts - Set up alert rules to get notified when quota usage reaches a specified threshold.
Query applications and view application details - Track the status and results of quota increase requests.
What is Quota Center? - Learn about managing quotas across Alibaba Cloud services.