Vault
HashiCorp Vault architecture, HA/DR, authentication, secrets management and PKI.
3 posts
What regular standby and performance standby nodes actually do in a Vault HA cluster, how requests flow, what runs locally, how load balancers should treat them, and where read scaling really comes from.
When a Vault primary and its DR secondary sit on opposite sides of NAT, cluster address advertisement can quietly break reconnection. How the mechanism works and how to design around it.
A practical guide to placing HashiCorp Vault behind a load balancer: Layer 4 TLS passthrough, health checks, standby request forwarding, performance standbys, ports, certificates and failure testing.