Secrets management Vault HashiCorp security

Implement secure secrets management using HashiCorp Vault for centralized credential storage and dynamic secrets generation. Vault architecture: 1. Cluster setup: 3-node cluster for high availability, integrated storage with Raft consensus. 2. Authentication methods: LDAP/AD integration, Kubernetes service accounts, AWS IAM, GitHub teams. 3. Secret engines: key-value store, database credentials, PKI certificates, cloud provider secrets. 4. Policies: path-based access control, capability restrictions (read, create, update, delete). Dynamic secrets: 1. Database credentials: temporary credentials with TTL (24 hours), automatic rotation. 2. Cloud provider: AWS/Azure/GCP temporary access keys, role assumption, session tokens. 3. PKI integration: certificate generation, automatic renewal, certificate authority management. Secret rotation: 1. Automated rotation: database passwords, API keys, certificates before expiration. 2. Grace periods: overlap periods for seamless credential transitions, application compatibility. 3. Notification: alerts before expiration, rotation success/failure notifications. Application integration: 1. Vault Agent: automatic token renewal, secret caching, template processing. 2. SDK integration: official client libraries, retry logic, error handling. 3. Kubernetes integration: Vault CSI driver, external-secrets operator, service mesh integration. Audit and compliance: 1. Audit logging: all Vault operations logged, centralized log collection. 2. Compliance: SOC 2, FedRAMP requirements, encryption standards (FIPS 140-2 Level 3). Disaster recovery: cross-region replication, backup/restore procedures, RTO <1 hour target.