ElastiCache / Client / describe_reserved_cache_nodes

describe_reserved_cache_nodes#

ElastiCache.Client.describe_reserved_cache_nodes(**kwargs)#

Returns information about reserved cache nodes for this account, or about a specified reserved cache node.

Request Syntax

response = client.describe_reserved_cache_nodes(
    ReservedCacheNodeId='string',
    ReservedCacheNodesOfferingId='string',
    CacheNodeType='string',
    Duration='string',
    ProductDescription='string',
    OfferingType='string',
    MaxRecords=123,
    Marker='string'
)

Parameters:

ReservedCacheNodeId (string) – The reserved cache node identifier filter value. Use this parameter to show only the reservation that matches the specified reservation ID.
ReservedCacheNodesOfferingId (string) – The offering identifier filter value. Use this parameter to show only purchased reservations matching the specified offering identifier.
CacheNodeType (string) –
The cache node type filter value. Use this parameter to show only those reservations matching the specified cache node type.

The following node types are supported by ElastiCache. Generally speaking, the current generation types provide more memory and computational power at lower cost when compared to their equivalent previous generation counterparts.
- General purpose:
  - Current generation: M7g node types: cache.m7g.large, cache.m7g.xlarge, cache.m7g.2xlarge, cache.m7g.4xlarge, cache.m7g.8xlarge, cache.m7g.12xlarge, cache.m7g.16xlarge
  Note
  
  For region availability, see Supported Node Types
  
  M6g node types (available only for Redis OSS engine version 5.0.6 onward and for Memcached engine version 1.5.16 onward): cache.m6g.large, cache.m6g.xlarge, cache.m6g.2xlarge, cache.m6g.4xlarge, cache.m6g.8xlarge, cache.m6g.12xlarge, cache.m6g.16xlarge M5 node types: cache.m5.large, cache.m5.xlarge, cache.m5.2xlarge, cache.m5.4xlarge, cache.m5.12xlarge, cache.m5.24xlarge M4 node types: cache.m4.large, cache.m4.xlarge, cache.m4.2xlarge, cache.m4.4xlarge, cache.m4.10xlarge T4g node types (available only for Redis OSS engine version 5.0.6 onward and Memcached engine version 1.5.16 onward): cache.t4g.micro, cache.t4g.small, cache.t4g.medium T3 node types: cache.t3.micro, cache.t3.small, cache.t3.medium T2 node types: cache.t2.micro, cache.t2.small, cache.t2.medium
  - Previous generation: (not recommended. Existing clusters are still supported but creation of new clusters is not supported for these types.) T1 node types: cache.t1.micro M1 node types: cache.m1.small, cache.m1.medium, cache.m1.large, cache.m1.xlarge M3 node types: cache.m3.medium, cache.m3.large, cache.m3.xlarge, cache.m3.2xlarge
- Compute optimized:
  - Previous generation: (not recommended. Existing clusters are still supported but creation of new clusters is not supported for these types.) C1 node types: cache.c1.xlarge
- Memory optimized:
  - Current generation: R7g node types: cache.r7g.large, cache.r7g.xlarge, cache.r7g.2xlarge, cache.r7g.4xlarge, cache.r7g.8xlarge, cache.r7g.12xlarge, cache.r7g.16xlarge
  Note
  
  For region availability, see Supported Node Types
  
  R6g node types (available only for Redis OSS engine version 5.0.6 onward and for Memcached engine version 1.5.16 onward): cache.r6g.large, cache.r6g.xlarge, cache.r6g.2xlarge, cache.r6g.4xlarge, cache.r6g.8xlarge, cache.r6g.12xlarge, cache.r6g.16xlarge R5 node types: cache.r5.large, cache.r5.xlarge, cache.r5.2xlarge, cache.r5.4xlarge, cache.r5.12xlarge, cache.r5.24xlarge R4 node types: cache.r4.large, cache.r4.xlarge, cache.r4.2xlarge, cache.r4.4xlarge, cache.r4.8xlarge, cache.r4.16xlarge
  - Previous generation: (not recommended. Existing clusters are still supported but creation of new clusters is not supported for these types.) M2 node types: cache.m2.xlarge, cache.m2.2xlarge, cache.m2.4xlarge R3 node types: cache.r3.large, cache.r3.xlarge, cache.r3.2xlarge, cache.r3.4xlarge, cache.r3.8xlarge
Additional node type info
- All current generation instance types are created in Amazon VPC by default.
- Valkey or Redis OSS append-only files (AOF) are not supported for T1 or T2 instances.
- Valkey or Redis OSS Multi-AZ with automatic failover is not supported on T1 instances.
- The configuration variables appendonly and appendfsync are not supported on Valkey, or on Redis OSS version 2.8.22 and later.
Duration (string) –
The duration filter value, specified in years or seconds. Use this parameter to show only reservations for this duration.

Valid Values: 1 | 3 | 31536000 | 94608000
ProductDescription (string) – The product description filter value. Use this parameter to show only those reservations matching the specified product description.
OfferingType (string) –
The offering type filter value. Use this parameter to show only the available offerings matching the specified offering type.

Valid values: "Light Utilization"|"Medium Utilization"|"Heavy Utilization"|"All Upfront"|"Partial Upfront"| "No Upfront"
MaxRecords (integer) –
The maximum number of records to include in the response. If more records exist than the specified MaxRecords value, a marker is included in the response so that the remaining results can be retrieved.

Default: 100

Constraints: minimum 20; maximum 100.
Marker (string) – An optional marker returned from a prior request. Use this marker for pagination of results from this operation. If this parameter is specified, the response includes only records beyond the marker, up to the value specified by MaxRecords.

Return type:

dict

Returns:

Response Syntax

{
    'Marker': 'string',
    'ReservedCacheNodes': [
        {
            'ReservedCacheNodeId': 'string',
            'ReservedCacheNodesOfferingId': 'string',
            'CacheNodeType': 'string',
            'StartTime': datetime(2015, 1, 1),
            'Duration': 123,
            'FixedPrice': 123.0,
            'UsagePrice': 123.0,
            'CacheNodeCount': 123,
            'ProductDescription': 'string',
            'OfferingType': 'string',
            'State': 'string',
            'RecurringCharges': [
                {
                    'RecurringChargeAmount': 123.0,
                    'RecurringChargeFrequency': 'string'
                },
            ],
            'ReservationARN': 'string'
        },
    ]
}

Response Structure

(dict) –

Represents the output of a DescribeReservedCacheNodes operation.
- Marker (string) –
  
  Provides an identifier to allow retrieval of paginated results.
- ReservedCacheNodes (list) –
  
  A list of reserved cache nodes. Each element in the list contains detailed information about one node.
  - (dict) –
    
    Represents the output of a PurchaseReservedCacheNodesOffering operation.
    - ReservedCacheNodeId (string) –
      
      The unique identifier for the reservation.
    - ReservedCacheNodesOfferingId (string) –
      
      The offering identifier.
    - CacheNodeType (string) –
      
      The cache node type for the reserved cache nodes.
      
      The following node types are supported by ElastiCache. Generally speaking, the current generation types provide more memory and computational power at lower cost when compared to their equivalent previous generation counterparts.
      - General purpose:
        
        Current generation: M7g node types: cache.m7g.large, cache.m7g.xlarge, cache.m7g.2xlarge, cache.m7g.4xlarge, cache.m7g.8xlarge, cache.m7g.12xlarge, cache.m7g.16xlarge
        
        Note
        
        For region availability, see Supported Node Types
        
        M6g node types (available only for Redis OSS engine version 5.0.6 onward and for Memcached engine version 1.5.16 onward): cache.m6g.large, cache.m6g.xlarge, cache.m6g.2xlarge, cache.m6g.4xlarge, cache.m6g.8xlarge, cache.m6g.12xlarge, cache.m6g.16xlarge M5 node types: cache.m5.large, cache.m5.xlarge, cache.m5.2xlarge, cache.m5.4xlarge, cache.m5.12xlarge, cache.m5.24xlarge M4 node types: cache.m4.large, cache.m4.xlarge, cache.m4.2xlarge, cache.m4.4xlarge, cache.m4.10xlarge T4g node types (available only for Redis OSS engine version 5.0.6 onward and Memcached engine version 1.5.16 onward): cache.t4g.micro, cache.t4g.small, cache.t4g.medium T3 node types: cache.t3.micro, cache.t3.small, cache.t3.medium T2 node types: cache.t2.micro, cache.t2.small, cache.t2.medium
        
        Previous generation: (not recommended. Existing clusters are still supported but creation of new clusters is not supported for these types.) T1 node types: cache.t1.micro M1 node types: cache.m1.small, cache.m1.medium, cache.m1.large, cache.m1.xlarge M3 node types: cache.m3.medium, cache.m3.large, cache.m3.xlarge, cache.m3.2xlarge
      - Compute optimized:
        
        Previous generation: (not recommended. Existing clusters are still supported but creation of new clusters is not supported for these types.) C1 node types: cache.c1.xlarge
      - Memory optimized:
        
        Current generation: R7g node types: cache.r7g.large, cache.r7g.xlarge, cache.r7g.2xlarge, cache.r7g.4xlarge, cache.r7g.8xlarge, cache.r7g.12xlarge, cache.r7g.16xlarge
        
        Note
        
        For region availability, see Supported Node Types
        
        R6g node types (available only for Redis OSS engine version 5.0.6 onward and for Memcached engine version 1.5.16 onward): cache.r6g.large, cache.r6g.xlarge, cache.r6g.2xlarge, cache.r6g.4xlarge, cache.r6g.8xlarge, cache.r6g.12xlarge, cache.r6g.16xlarge R5 node types: cache.r5.large, cache.r5.xlarge, cache.r5.2xlarge, cache.r5.4xlarge, cache.r5.12xlarge, cache.r5.24xlarge R4 node types: cache.r4.large, cache.r4.xlarge, cache.r4.2xlarge, cache.r4.4xlarge, cache.r4.8xlarge, cache.r4.16xlarge
        
        Previous generation: (not recommended. Existing clusters are still supported but creation of new clusters is not supported for these types.) M2 node types: cache.m2.xlarge, cache.m2.2xlarge, cache.m2.4xlarge R3 node types: cache.r3.large, cache.r3.xlarge, cache.r3.2xlarge, cache.r3.4xlarge, cache.r3.8xlarge
      Additional node type info
      - All current generation instance types are created in Amazon VPC by default.
      - Valkey or Redis OSS append-only files (AOF) are not supported for T1 or T2 instances.
      - Valkey or Redis OSS Multi-AZ with automatic failover is not supported on T1 instances.
      - The configuration variables appendonly and appendfsync are not supported on Valkey, or on Redis OSS version 2.8.22 and later.
    - StartTime (datetime) –
      
      The time the reservation started.
    - Duration (integer) –
      
      The duration of the reservation in seconds.
    - FixedPrice (float) –
      
      The fixed price charged for this reserved cache node.
    - UsagePrice (float) –
      
      The hourly price charged for this reserved cache node.
    - CacheNodeCount (integer) –
      
      The number of cache nodes that have been reserved.
    - ProductDescription (string) –
      
      The description of the reserved cache node.
    - OfferingType (string) –
      
      The offering type of this reserved cache node.
    - State (string) –
      
      The state of the reserved cache node.
    - RecurringCharges (list) –
      
      The recurring price charged to run this reserved cache node.
      - (dict) –
        
        Contains the specific price and frequency of a recurring charges for a reserved cache node, or for a reserved cache node offering.
        
        RecurringChargeAmount (float) –
        
        The monetary amount of the recurring charge.
        
        RecurringChargeFrequency (string) –
        
        The frequency of the recurring charge.
    - ReservationARN (string) –
      
      The Amazon Resource Name (ARN) of the reserved cache node.
      
      Example: arn:aws:elasticache:us-east-1:123456789012:reserved-instance:ri-2017-03-27-08-33-25-582

Exceptions

ElastiCache.Client.exceptions.ReservedCacheNodeNotFoundFault
ElastiCache.Client.exceptions.InvalidParameterValueException
ElastiCache.Client.exceptions.InvalidParameterCombinationException

Examples

Returns information about reserved cache nodes for this account, or about a specified reserved cache node. If the account has no reserved cache nodes, the operation returns an empty list, as shown here.

response = client.describe_reserved_cache_nodes(
    MaxRecords=25,
)

print(response)

Expected Output:

{
    'ResponseMetadata': {
        '...': '...',
    },
}

describe_reserved_cache_nodes#

Request Syntax

Note

Note

Additional node type info

Response Syntax

Response Structure

Note

Note

Additional node type info

Exceptions

Examples