Identify any failed ElastiCache Reserved Cache Nodes (RCNs) available within your AWS account and follow Cloud Conformity instructions for remediation/resolution in order to enable discounted hourly rates for ElastiCache cache nodes in exchange of reserving a certain amount of compute usage upfront. A failed ElastiCache RCN is an unsuccessful reservation that received the "payment-failed" status during the purchase process.
This rule can help you work with the AWS Well-Architected Framework
This rule resolution is part of the Cloud Conformity Security & Compliance tool for AWS
The cost savings when using ElastiCache Reserved Cache Nodes over standard On-Demand Cache Nodes are up to 70% when used in steady state (e.g. in a production environment), therefore in order to receive this discount benefit you need to make sure that all your ElastiCache reservation purchases have been successfully completed.
To identify any failed ElastiCache RCN purchases available within your AWS account, perform the following actions:
Remediation / Resolution
To fix any unsuccessful AWS ElastiCache reservations you need to retry your failed ElastiCache Reserved Cache Node(s) payments by contacting Amazon Web Services. To create the necessary support case using AWS Support Center console, perform the following:Note 1: Failed AWS ElastiCache Reserved Cache Node (RCN) purchases from previous billing periods cannot be retried.
Note 2: Requesting Amazon to retry your failed ElastiCache RCN(s) payments using AWS Billing and Cost Management console or AWS API via Command Line Interface (CLI) is not currently supported.
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You are auditing:
ElastiCache Reserved Cache Node Payment Failed
Risk level: High