Alibaba Cloud will perform maintenance on the control plane of Container Service for Kubernetes (ACK) from 00:00 (UTC+8) to 04:00 (UTC+8) on May 29, 2022. You cannot create, modify, or delete clusters, node pools, or components in the console or by calling API operations during the maintenance period. The maintenance does not interrupt ACK clusters or applications that are running. We recommend that you prepare before the maintenance starts.

Affected operations

You cannot perform the following operations during the maintenance period:

  • Create, delete, or modify clusters. The maintenance does not interrupt ACK clusters that are running.
  • Create, delete, or modify node pools, and add nodes to or remove nodes from node pools. The maintenance does not interrupt node pools that are running.
  • Install, uninstall, or modify components. The maintenance does not interrupt components that are running.
  • Query the kubeconfig file of a cluster.
  • Create, modify, or delete orchestration templates.
  • Create or delete application triggers.
  • Update or migrate clusters.
  • Update container runtimes.
  • Modify the resource quotas of an Alibaba Cloud account.
  • Modify the role-based access control (RBAC) permissions of a Resource Access Management (RAM) user.
  • Configure and perform inspections.
  • Create, modify, or delete policy instances. The maintenance does not affect existing policy instances.
  • Enable Prometheus monitoring. If Prometheus monitoring is enabled before the maintenance starts, the collection of monitoring data is not interrupted during the maintenance period.
  • Enable alerting. If alerting is enabled before the maintenance starts, you cannot create, modify, or delete alert rules or contacts. Alert rules that are enabled before the maintenance starts work as normal during the maintenance period.
  • Enable cost analysis. If cost analysis is enabled before the maintenance starts, the cost analysis process is not interrupted and the analysis results are generated as normal during the maintenance period.
  • Enable application backup. If application backup is enabled before the maintenance starts, existing backup plans are not interrupted during the maintenance period.
  • The console may prompt an error message for the nodes that are added by the Autoscaler component. The error message disappears after the maintenance is completed. If the error message remains, click Sync Node Pool.