name : failover-db-cluster.rst **To force an Amazon DocumentDB cluster to failover to a replica** The following ``failover-db-cluster`` example causes the primary instance in the Amazon DocumentDB cluster sample-cluster to failover to a replica. :: aws docdb failover-db-cluster \ --db-cluster-identifier sample-cluster Output:: { "DBCluster": { "AssociatedRoles": [], "DBClusterIdentifier": "sample-cluster", "EngineVersion": "3.6.0", "DBSubnetGroup": "default", "MasterUsername": "master-user", "EarliestRestorableTime": "2019-03-15T20:30:47.020Z", "Endpoint": "sample-cluster.cluster-corcjozrlsfc.us-west-2.docdb.amazonaws.com", "AvailabilityZones": [ "us-west-2a", "us-west-2c", "us-west-2b" ], "LatestRestorableTime": "2019-03-18T21:35:23.548Z", "PreferredMaintenanceWindow": "sat:04:30-sat:05:00", "PreferredBackupWindow": "00:00-00:30", "Port": 27017, "VpcSecurityGroups": [ { "VpcSecurityGroupId": "sg-77186e0d", "Status": "active" } ], "StorageEncrypted": false, "ClusterCreateTime": "2019-03-15T20:29:58.836Z", "MultiAZ": true, "Status": "available", "DBClusterMembers": [ { "DBClusterParameterGroupStatus": "in-sync", "IsClusterWriter": false, "DBInstanceIdentifier": "sample-cluster", "PromotionTier": 1 }, { "DBClusterParameterGroupStatus": "in-sync", "IsClusterWriter": true, "DBInstanceIdentifier": "sample-cluster2", "PromotionTier": 2 } ], "EnabledCloudwatchLogsExports": [ "audit" ], "DBClusterParameterGroup": "default.docdb3.6", "HostedZoneId": "ZNKXH85TT8WVW", "DBClusterArn": "arn:aws:rds:us-west-2:123456789012:cluster:sample-cluster", "BackupRetentionPeriod": 3, "DbClusterResourceId": "cluster-UP4EF2PVDDFVHHDJQTYDAIGHLE", "ReaderEndpoint": "sample-cluster.cluster-ro-corcjozrlsfc.us-west-2.docdb.amazonaws.com", "Engine": "docdb" } } For more information, see `Amazon DocumentDB Failover <https://docs.aws.amazon.com/documentdb/latest/developerguide/failover.html>`__ in the *Amazon DocumentDB Developer Guide*.