This topic describes the limits that apply when you use Container Service for Kubernetes clusters.

Overview

  • After a Kubernetes cluster is created, the following limits apply:
    • You cannot change the VPC network.
    • You cannot change the cluster type. For example, you cannot convert a dedicated cluster to a managed cluster.
    • You cannot change the network plug-in.
    • You cannot change the volume plug-in.
  • You cannot migrate applications across namespaces.
  • Currently, ECS instances support two billing methods: pay-as-you-go and subscription. You can change the billing method of ECS instances from pay-as-you-go to subscription in the ECS console. Other resources such as SLB instances only support the pay-as-you-go billing method.
  • Operations such as cluster creation, expansion, and auto scaling are subject to resource quota limits and inventory availability. The number of nodes you specified may not be created.
  • If you choose to create subscription instances when you create a cluster, instance creation may fail due to resource quota limits and inventory availability. After a subscription instance is created, you cannot release it before the subscription expires. To avoid these issues, we recommend that you choose to create pay-as-you-go instances. You can change the billing method from pay-as-you-go to subscription in the ECS console if necessary.

Quota limits on ACK

Item Limit Quota increase
Real-name verification Real-name verification No exception
Create pay-as-you-go instances None None
Total number of Kubernetes clusters and managed Kubernetes clusters under an account 50 to 2,000

Go to the Quota Management page and submit a ticket.

Total number of master nodes and worker nodes in a cluster 100 to 5,000

Go to the Quota Management page and submit a ticket.

Maximum number of pods on a worker node Configurable option. Maximum is 256. No exception
Total number of serverless Kubernetes clusters under an account 2

Go to the Quota Management page and submit a ticket.

Quota limits on underlying cloud resources

Resource Item Limit Quota increase
Computing Total vCPU quota of pay-as-you-go instances 500 vCPUs

Submit a ticket
vCPU quota of a pay-as-you-go instance Less than 16 vCPUs

Submit a ticket
Total vCPU quota of preemptible instances 800 vCPUs

Submit a ticket
Convert from pay-as-you-go to subscription Not supported by the following instance families: t1, s1, s2, s3, c1, c2, m1, m2, n1, n2, and e3.

Submit a ticket
Maximum number of ECS instances managed by a scaling group 1,000

Submit a ticket
Networking Maximum number of custom route entries in a route table 48

Submit a ticket
Maximum number of VSwitches in a VPC network 24

Submit a ticket
Maximum number of VPC networks 10

Submit a ticket
Maximum number of internal IP addresses in a VPC network 65,535 No exception
Maximum number of IP addresses attached to a basic security group 2,000 No exception
Maximum number of Elastic Network Interfaces (ENIs) 50,000 No exception
Maximum number of Elastic IP addresses (EIPs) 20

Submit a ticket
Server Load Balancing (SLB) Maximum number of SLB instances under an account 60

Submit a ticket
Maximum number of backend servers attached to an SLB instance 200 No exception
Maximum number of listeners of an SLB instance 50

Submit a ticket
Maximum number of times that an ECS instance can be repeatedly added as a backend server to SLB instances 50 No exception
Block storage Maximum number of pay-as-you-go disks across all regions under an account Number of ECS instances across all regions × 5 You can create at least 10 pay-as-you-go disks under an account.

Submit a ticket
Maximum capacity of pay-as-you-go disks that are used as data disks under an account This limit is subject to ECS resource usage, region, and disk type. You can go to the Privileges & Quotas page in the ECS console to view detailed information. For more information, see View quotas (old version).

Submit a ticket

Supported regions

The following table lists the regions where Container Service for Kubernetes is available.
  • Asia Pacific
    Region name City Region ID
    China (Beijing) Beijing cn-beijing
    China (Zhangjiakou) Zhangjiakou cn-zhangjiakou
    China (Hohhot) Hohhot cn-huhehaote
    China (Hangzhou) Hangzhou cn-hangzhou
    China (Shanghai) Shanghai cn-shanghai
    China (Shenzhen) Shenzhen cn-shenzhen
    China (Chengdu) Chengdu cn-chengdu
    China (Hong Kong) Hong Kong cn-hongkong
    Japan (Tokyo) Tokyo ap-northeast-1
    Singapore Singapore ap-southeast-1
    Australia (Sydney) Sydney ap-southeast-2
    Malaysia (Kuala Lumpur) Kuala Lumpur ap-southeast-3
    Indonesia (Jakarta) Jakarta ap-southeast-5
  • Americas and Europe
    Region name City Region ID
    US (Silicon Valley) Silicon Valley us-west-1
    US (Virginia) Virginia us-east-1
    UK (London) London eu-west-1
    Germany (Frankfurt) Frankfurt eu-central-1
  • Middle East and India
    Region name City Region ID
    UAE (Dubai) Dubai me-east-1
    India (Mumbai) Mumbai ap-south-1