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Resize Redshift Cluster Actions
Resize Redshift Cluster Actions
Matt Houser avatar
Written by Matt Houser
Updated over a week ago


The Resize Redshift Cluster action can be used to change the size (or number of nodes) of a running Redshift cluster. Later, it can (optionally) be changed back.

For example, at 8am, a dw.hs1.xlarge cluster can be upgraded to a dw.hs1.8xlarge and have 10 nodes added, then 8 hours later, it can be reverted back to it's original size.

Important Note

The process of changing a Redshift cluster's size requires the cluster to be offline briefly while the modification occurs.


Please see Common Action Settings for a description of settings common to all action types.

Redshift Cluster ID

Indicate the cluster identifier of your Redshift cluster. This cluster must reside in the region specified.

Node Type

Specify the new node type or "No Change" to leave the node type unchanged.

Number of Nodes

Specify the new number of nodes or leave blank leave the number of nodes unchanged.

Revert the Size

Indicate whether the size should be automatically reverted later. The running time of the new size must also be specified if this is enabled.

Running Duration

Indicate the length of time the cluster should remain at the new size before it is reverted. This value is only required if "Revert the Size" is enabled.

Amazon Commands Used

The following Amazon AWS commands are used. The access key should have permission to execute all of them.

  • redshift:DescribeClusters

  • redshift:ModifyCluster

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