Add Feature for AWS Redis to create from non-aws backups

[parmarsumit]

Hi Team , Problem , i am creating a redis cluster from the rdb files taken from Datacenter redis with following config: `resource "aws_elasticache_replication_group" "default" { replication_group_id = "${var.tags["ApplicationName"]}" replication_group_description = "${var.tags["ApplicationName"]}" engine = "${var.engine}" engine_version = "${var.engine_version}" node_type = "${var.instance_type}"

number_cache_clusters = "${var.cluster_size}" - InvalidParameterCombination: Cannot scale up cluster mode enabled replication group.

port = "${var.port}" parameter_group_name = "${var.parameter_group_name}" automatic_failover_enabled = "${var.automatic_failover_enabled}" subnet_group_name = "${var.subnet_group_name}" #Check security.tf security_group_ids = ["${aws_security_group.default.id}"] #Check security.tf maintenance_window = "${var.maintenance_window}" at_rest_encryption_enabled = "${var.at_rest_encryption_enabled}" transit_encryption_enabled = "${var.transit_encryption_enabled}" snapshot_retention_limit = "${var.snapshot_retention_limit}"

_**snapshot_arns = ["${var.snapshot_arns}"]

snapshotname = "intgwbk"** cluster_mode { replicas_per_node_group = 1 num_node_groups = 3 }

tags = "${var.tags}" }`

This gets failed with Error :

Error creating Elasticache Replication Group: InvalidParameterCombination: Slots must be provided when restoring from snapshot ARNs with cluster mode enabled

Similar to issue .

to make it work need to add the NodeGroupConfguration as mentioned here 💯 https://docs.aws.amazon.com/AmazonElastiCache/latest/red-ug/Replication.CreatingReplGroup.NoExistingCluster.Cluster.html --node-group-configuration \ "ReplicaCount=1,Slots=0-8999,PrimaryAvailabilityZone='us-east-1c',ReplicaAvailabilityZones='us-east-1b'" \ "ReplicaCount=2,Slots=9000-16383,PrimaryAvailabilityZone='us-east-1a',ReplicaAvailabilityZones='us-east-1a','us-east-1c'"

This is available from cli and boto library : https://boto3.readthedocs.io/en/latest/reference/services/elasticache.html

Similar issue . : 5118

[geota]

This is impacting my team as well and we are unable to restore a snapshot taken from a cluster redis using only terraform.

[geota]

One note, this also impacts snapshots taken from AWS native ElastiCache Redis clusters in cluster-mode and is not an issue limited to non-aws backups.

[leigu]

We need the exact same feature as well. Any update on this issue?

[tgourley01]

We require redis in cluster mode as well

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[mcansky]

was that ever solved?