The limits for Alibaba Cloud Container Service swarm clusters are as follows.

Cluster

  • By default, you can create at most five clusters in all regions and add at most 20 nodes in each cluster. To create more clusters or add more nodes to a cluster, open a ticket.
  • The Elastic Compute Service (ECS) instances and Server Load Balancer instances created with clusters only support the Pay-As-You-Go billing method.

Expand a cluster

The nodes added by expanding a cluster are Pay-As-You-Go nodes.

Add an existing ECS instance

  • The ECS instance to be added must be in the same region and use the same network type (Virtual Private Cloud (VPC)) as the cluster.
  • When adding an existing ECS instance, make sure that your ECS instance has an Elastic IP (EIP) for the network type VPC. Otherwise, the ECS instance fails to be added.
  • The ECS instance to be added must be under the same account as the cluster.

Bind a Server Load Balancer instance

  • You can only bind a Server Load Balancer instance to a cluster of the same region.
  • You can only bind a Server Load Balancer instance to a cluster created by the same account.
  • A VPC cluster can bind an Internet Server Load Balancer instance or an intranet Server Load Balancer instance.
  • One cluster can only bind one Server Load Balancer instance.
  • Two clusters cannot share one Server Load Balancer instance.