Azure Key Vault offers a more secure alternative to storing Couchbase credentials in local config files or environment variables. Two approaches are covered: using Azure Key Vault references in Azure Functions app settings (with managed identity, no custom SDK code needed), and Couchbase Capella's native Customer-Managed Encryption Keys (CMEK) integration with Azure Key Vault for data-at-rest encryption. CMEK requires the Capella Enterprise plan, an RSA key (2048/3072/4096-bit), and the Key Vault in the same Azure region as the cluster. Key benefits include AES-256 encryption at rest, version history, cross-app secret sharing, granular RBAC, and full control over key rotation and revocation.
Table of contents
Local Configuration Files vs Azure Key VaultApproach 1: Azure Function Retrieving Couchbase Credentials from Key VaultFrequently Asked QuestionsSummary and Next Steps109 Impressions