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Remediation

From Command Line​

Check Allowed Modifications for the Cluster​

aws elasticache list-allowed-node-type-modifications --cache-cluster-id {{cache-cluster-id}}

Note the ScaleDownModifications options.

To Downsize the Cluster​

You can modify an existing cluster's node type using the modify-cache-cluster command:

aws elasticache modify-cache-cluster \
    --cache-cluster-id {{cache-cluster-id}} \
    --cache-node-type {{new-node-type}} \

The --apply-immediately flag applies the change immediately; omit it to apply during the next maintenance window.