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Quotas and Limits

Last updated: 2022-06-10 19:32:51

    While using TKE services, you need to consider the service quota applied to TKE, CVM, and managed clusters.

    TKE Quota Limit

    The default TKE quota for each user is as follows. If you want to increase the quota, submit a ticket for application.

    Note:

    From October 21, 2019, the maximum node quota for a cluster has been adjusted to at least 5,000.

    Item Default Value Where to Check Quota Increase Allowed or Not
    Clusters in a region 5 Bottom-right section of the TKE overview page Yes
    Nodes in a cluster 5,000
    Image namespaces in a region 10
    Image repositories in a region 500
    Tags of an image 100

    CVM Quota Limit

    CVM instances generated by TKE are subject to purchase limits. For more information, see Purchase Limits. If you need more quotas than the default, submit a ticket for application.

    Item Default Value Where to Check Quota Increase Allowed or Not
    Pay-as-you-go CVM instances in an AZ 30 or 60 CVM Instances page - Resources in each region Yes

    Cluster Configuration Limit

    Note:

    Cluster configuration limits the cluster size and cannot be modified currently.

    Item IP Address Range Affected Scope Where to Check Modification Allowed or Not
    VPC network - Subnet Custom Number of nodes that can be added to the subnet VPC subnet list page for the cluster - Number of available IP addresses
    • No
    • You can use a new subnet
    Container CIDR block Custom
    • Maximum number of nodes per cluster
    • Maximum number of services per cluster
    • Maximum number of Pods per node
    Basic information page for the cluster - Container CIDR block No

    K8s Resource Quota Description

    Note:

    The following quotas are automatically applied from April 30, 2022 (UTC +8) and cannot be adjusted. You can increase the resource quota by upgrading the cluster model.
    To adjust your quota, submit a ticket for application.

    Run the following command to check the quota:

    kubectl get resourcequota tke-default-quota -o yaml
    

    To check the tke-default-quota object of a specified namespace, add --namespace to specify the namespace.

    Note:

    • Other K8s resource limit means that the number of all K8s resources in the cluster except Pod, Node, and ConfigMap cannot exceed this value. For example, for an L100 cluster, the number of ClusterRole, Service, Endpoint, and other K8s resources cannot exceed 10,000.
    • CRD refers to the sum of all CRDs in the cluster. If the number of some CRDs increases, the number of other CRDs will decrease.
    Cluster Model Pods ConfigMap CRDs/Other K8s Resources
    L5 600 256 1,250
    L20 1,500 512 2,500
    L50 3,000 1,024 5,000
    L100 6,000 2,048 10,000
    L200 15,000 4,096 20,000
    L500 30,000 6,144 50,000
    L1000 90,000 8,192 100,000
    L3000 150,000 10,240 150,000
    L5000 200,000 20,480 200,000

    Namespace quota

    By default, each namespace has the same margin (margin = quota for the current cluster level - amount already used by the entire cluster). If you create resources in a namespace, the margin will decrease, and the amount available in other namespaces will decrease accordingly after a certain period of time.

    If you want to customize the allocation ratio, you can create a tke-quota-config ConfigMap under kube-system to specify the margin allocation ratio for each namespace.

    The following example sets the margin allocation ratio to 50% for the default namespace, 40% for the kube-system namespace, and 10% for the rest of the namespaces. If the sum of the set percentages exceeds 100%, TKE considers the ratio invalid and will use the default allocation policy.

    apiVersion: v1
    data:
     default: "50"
     kube-system: "40"
    kind: ConfigMap
    metadata:
     name: tke-quota-config
     namespace: kube-system
    
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