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Manage cross-zone nodes

Last Updated: Dec 06, 2017

To enhance the high availability of applications, you can distribute multiple nodes in different zones when creating a cluster.

You can create a cluster with one node or a zero-node cluster. Then, add nodes of different zones by expanding the cluster or adding existing Elastic Compute Service (ECS) instances.

Note:

  • Nodes added by expanding the cluster are Pay-As-You-Go ECS instances.
  • Nodes added by adding existing ECS instances can be Pay-As-You-Go ECS instances or monthly/yearly subscription ECS instances.
  • A cluster can contain up to 20 nodes.

Add nodes of different zones by expanding the cluster

Procedure

  1. Log on to the Container Service console.

  2. Click Clusters in the left-side navigation pane.

  3. On the Cluster List page, click More at the right of the cluster that you want to expand and then select Expand from the list.

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  4. A dialog box opens. Configure the specifications of the new node in the dialog box.

    You can create nodes of different zones by setting Zone.

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  5. Click Expand. The new node is added to the cluster.

  6. Repeat the preceding steps to create and add nodes of different zones to the cluster.

Add nodes of different zones by adding existing ECS instances

Prerequisite

To add nodes by using this method, purchase ECS instances from the ECS purchase page first, and select different zones for them during the purchase.

Procedure

  1. Log on to the Container Service console.

  2. Click Clusters in the left-side navigation pane.

  3. On the Cluster List page, click More at the right of the cluster that you want to add existing ECS instances and then select Add Existing Instances from the list.

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  4. Select ECS instances of different zones and add them manually or automatically to the cluster.

    For details, see Add an existing ECS instance.

  5. Repeat the preceding steps to add ECS instances of different zones to the cluster.

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