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    Quotas and Limits

    Last updated: 2024-05-07 15:31:26
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      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
      20
      Yes, the upper limit of quota is unlimited
      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
      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
      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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