The following architecture diagram presents an overview of the solution: In this post, we’ve highlighted compute clusters, but you can use Secrets Manager to apply this solution directly to any SSH based use-case. Finally, we’ll use Secrets Manager to seamlessly rotate the keypair used by the cluster without any changes or outages. Then we’ll show you how to use Secrets Manager to deliver the keypair to the cluster and use it for management operations, such as securely copying a file between nodes. You’ll use an AWS CloudFormation template to launch a cluster and configure Secrets Manager. In this post, we’ll show you how to secure, rotate, and use SSH keypairs for inter-cluster communication. These are precisely the types of tough challenges that AWS Secrets Manger solves for you. Moreover, the keypairs themselves are highly sensitive security credentials which must be carefully controlled with fine-grain access controls, detailed monitoring, and audit logging. However, rotating the keypair on all compute clusters’ nodes must be done in a tightly coordinated fashion, and failures generally result in availability risks. For example, synchronizing key rotation across all compute nodes, enable detailed logging and auditing, and manage access to users in order to modify secrets. Traditionally, these keypairs have been associated with a number of tough challenges. Rotation of these keypairs is a security best practice, and sometimes a regulatory requirement. In this post, Maitreya and I will show you how to use Secrets Manager to store, deliver, and rotate SSH keypairs used for communication within compute clusters. October 4, 2019: We’ve updated the estimated solution cost for accuracy.ĪWS Secrets Manager provides full lifecycle management for secrets within your environment. To prevent breaking changes, AWS KMS is keeping some variations of this term. August 31, 2021: AWS KMS is replacing the term customer master key (CMK) with AWS KMS key and KMS key.
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