Canceling pending add or delete node operations in ElastiCache

If you elected to not apply an ElastiCache cluster change immediately, the operation has pending status until it is performed at your next maintenance window. You can cancel any pending operation.

To cancel a pending add or delete node operation with the AWS CLI, use the modify-cache-cluster command. Set num-cache-nodes equal to the current number of cache nodes in the cluster, and then add the --apply-immediately flag. This will override the pending change.

To cancel a pending node addition or deletion:

aws elasticache modify-cache-cluster 
	--cache-cluster-id <your-cluster-id> 
	--num-cache-nodes <current-number-of-nodes> 
	--apply-immediately

If it isn't clear whether any node additions or deletions are pending, you can confirm their status with the describe-cache-clusters command:

aws elasticache describe-cache-clusters 
	--cache-cluster-id <your-cluster-id>

Any pending nodes should appear in the PendingModifiedValuesoutput. For example:

"PendingModifiedValues": {
	"NumCacheNodes": 3
	},