Vault PKI Certificate Management for TaskFlow
Stand up a full private certificate authority inside Vault to issue, inspect, and revoke TLS certificates for the TaskFlow app using the PKI secrets engine on dev-mode Vault.
Lab Overview
🛠Lab from the Platform Engineering Bootcamp. Used in Week 18. Bootcamp landing page: https://academy.tekanaid.com/bootcamps/platform-engineering-bootcamp Parent course(s):
- Week 18: Secrets Management with HashiCorp Vault (slug: secrets-management-vault)
🟡 Beta bootcamp lab. Hands-on instructions, check scripts, and solve scripts are in place. Lab is part of the running TaskFlow project that grows across all 21 weeks of the bootcamp.
Build a two-tier private PKI inside Vault: a self-signed root CA, a signed intermediate CA, and a PKI role that issues short-lived TLS leaf certificates for the TaskFlow services. You will inspect certificates with OpenSSL, then revoke a certificate and publish a CRL.
What You'll Learn
Enable and tune the Vault PKI secrets engine and generate a self-signed root certificate authority
Generate an intermediate CA CSR, sign it with the root CA, and import the signed intermediate to form a trust chain
Author a PKI role with allowed_domains, allow_subdomains, key constraints, and TTL limits to govern what certificates can be issued
Issue TLS leaf certificates and verify their subject, SANs, validity window, and chain with OpenSSL
Revoke an issued certificate by serial number, inspect the resulting CRL, and automate certificate re-issuance
Technologies Covered
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