- Auto-enrollment on startup when certs are missing/invalid and enrollment.manager_url configured - Certificate validation (existence, parse, expiry, key match, CA trust) - --enroll exits after completion (no port conflict with systemd service) - --renew-certs flag for manual cert renewal - SO_REUSEADDR on TcpListener::bind (prevents Address already in use) - Polling token persistence for enrollment resume after restart - Exit code strategy (0=clean, 1=error, 2=enrollment in progress) - HTTP 409 (host already exists) handling during enrollment - Move 'Listening on' log after actual bind - Increase RestartSec to 10s and add StartLimitBurst=5 - Postinst checks for certs and enrollment URL, prints guidance - EnrollmentConfig.manager_url changed to Option<String> - cert_renewal_threshold_days and polling_token config fields - Updated SPEC.md and DEPLOYMENT_GUIDE.md with new workflow - RCA document for crash loop root cause analysis - Version bumped to 1.2.0
2.0 KiB
2.0 KiB
Auto-Enrollment Implementation Plan
Overview
Implement auto-enrollment workflow so the agent self-heals when certs are missing or invalid, instead of crash-looping.
Spec Updates
- Update SPEC.md: Self-Enrollment section, CLI arguments, startup behavior, cert validation, exit codes
- Update DEPLOYMENT_GUIDE.md: Auto-enrollment deployment method, manual enrollment, config options
Code Changes
- src/config/loader.rs: Cert validation (CertStatus enum, validate_certs function)
- src/config/loader.rs: EnrollmentConfig.manager_url changed to Option
- src/config/loader.rs: cert_renewal_threshold_days and polling_token fields added
- src/config/loader.rs: save_polling_token() and clear_polling_token() methods
- src/main.rs: Auto-enrollment path when certs invalid + URL configured
- src/main.rs: --enroll exits after completion (no fall-through to server startup)
- src/main.rs: --renew-certs flag for manual cert renewal
- src/main.rs: SO_REUSEADDR on TcpListener::bind (socket2 crate)
- src/main.rs: Move "Listening on" log after actual bind
- src/main.rs: Exit code strategy (0=clean, 1=error, 2=enrollment in progress)
- src/enroll/client.rs: HTTP 409 (Conflict) handling for host already exists
- src/enroll/mod.rs: Polling token resume from persisted config
- src/enroll/mod.rs: Handle ENROLLMENT_CONFLICT gracefully
- configs/linux-patch-api.service: RestartSec=10s, StartLimitBurst=5, StartLimitIntervalSec=300
- debian/postinst: Check for certs and enrollment URL, print guidance
Build & Test
- cargo check passes
- cargo test passes (107 unit + 7 e2e + 11 integration)
Remaining
- Build release package
- Test auto-enrollment on a clean host
- Test --enroll exits without starting server
- Test --renew-certs flag
- Test cert validation (missing, corrupt, expired, key mismatch, untrusted)
- Test SO_REUSEADDR (restart after crash)
- Test systemd exit code behavior
- Deploy to linux-patch-manager-dev for integration testing