**To test failover of a node group** The following ``test-failover`` example tests automatic failover on the specified node group (called a shard in the console) in a replication group (called a cluster in the console). :: aws elasticache test-failover / --replication-group-id "mycluster" / --node-group-id "0001" Output:: { "ReplicationGroup": { "ReplicationGroupId": "mycluster", "Description": "My Cluster", "Status": "available", "PendingModifiedValues": {}, "MemberClusters": [ "mycluster-0001-001", "mycluster-0001-002", "mycluster-0001-003", "mycluster-0002-001", "mycluster-0002-002", "mycluster-0002-003", "mycluster-0003-001", "mycluster-0003-002", "mycluster-0003-003" ], "NodeGroups": [ { "NodeGroupId": "0001", "Status": "available", "Slots": "0-5461", "NodeGroupMembers": [ { "CacheClusterId": "mycluster-0001-001", "CacheNodeId": "0001", "PreferredAvailabilityZone": "us-west-2b" }, { "CacheClusterId": "mycluster-0001-002", "CacheNodeId": "0001", "PreferredAvailabilityZone": "us-west-2a" }, { "CacheClusterId": "mycluster-0001-003", "CacheNodeId": "0001", "PreferredAvailabilityZone": "us-west-2c" } ] }, { "NodeGroupId": "0002", "Status": "available", "Slots": "5462-10922", "NodeGroupMembers": [ { "CacheClusterId": "mycluster-0002-001", "CacheNodeId": "0001", "PreferredAvailabilityZone": "us-west-2a" }, { "CacheClusterId": "mycluster-0002-002", "CacheNodeId": "0001", "PreferredAvailabilityZone": "us-west-2b" }, { "CacheClusterId": "mycluster-0002-003", "CacheNodeId": "0001", "PreferredAvailabilityZone": "us-west-2c" } ] }, { "NodeGroupId": "0003", "Status": "available", "Slots": "10923-16383", "NodeGroupMembers": [ { "CacheClusterId": "mycluster-0003-001", "CacheNodeId": "0001", "PreferredAvailabilityZone": "us-west-2c" }, { "CacheClusterId": "mycluster-0003-002", "CacheNodeId": "0001", "PreferredAvailabilityZone": "us-west-2b" }, { "CacheClusterId": "mycluster-0003-003", "CacheNodeId": "0001", "PreferredAvailabilityZone": "us-west-2a" } ] } ], "AutomaticFailover": "enabled", "ConfigurationEndpoint": { "Address": "mycluster.xxxxih.clustercfg.usw2.cache.amazonaws.com", "Port": 6379 }, "SnapshotRetentionLimit": 1, "SnapshotWindow": "13:00-14:00", "ClusterEnabled": true, "CacheNodeType": "cache.r5.large", "TransitEncryptionEnabled": false, "AtRestEncryptionEnabled": false } }