Every path that refreshed a combined certificate did
with open(combined_path, 'w') as combined: # TRUNCATES
subprocess.run(['cat', cert, key], stdout=combined) # rc ignored
where combined_path is the bundle HAProxy is currently serving. The live file
was emptied before any source material had been read and the cat status was
never checked, so an unreadable source, a zero-length privkey, a full disk or a
killed container left a truncated or key-less PEM in place. HAProxy loads
/etc/haproxy/certs as a directory, so one unusable file there fails the whole
ssl bind - HTTPS down for every site on the host, and unlike a bad haproxy.cfg
it is not recoverable by config rollback.
The bundle endpoint compounded it: superseded .pem files were unlinked and
their lineages `certbot delete`d before anything had checked the replacement,
destroying both copies of a working certificate. Recovery there means fresh,
rate-limited ACME orders.
Bundles are now assembled in a staging directory beside the crt directory (never
inside it - HAProxy would try to load a temp file), validated there, and swapped
in with os.replace(). Validation is mandatory structural checks in pure Python
plus a best-effort openssl key/leaf pairing check; a missing openssl warns
loudly and does not silently pass. The previous bundle is copied to
/etc/haproxy/cert-backups first. Superseded certs are moved aside rather than
deleted, and `certbot delete` runs only after HAProxy has reloaded onto the
replacement. The same guarantees are implemented for the cron/renewal shell
path in scripts/cert-publish-lib.sh, which also gates the reload on `haproxy -c`.
Reuses write_config_atomically() from the config-rollback fix (extended with
staging_dir/validate) rather than adding a second atomic writer.
Also heals a zero-byte QUIC cluster-secret file, which previously made
get_or_create_cluster_secret() return '' forever.
Tests: scripts/test-cert-write-safety.py (17) and scripts/test-cert-scripts.py
(32) in the existing stdlib-unittest, stub-binary convention. Both bug classes
reproduce against the pre-fix tree via HAPROXY_MANAGER_DIR.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Improved certificate renewal and sync scripts to be more resilient:
- Removed 'set -e' to prevent silent failures when individual domains error
- Scripts now continue processing remaining domains even if one fails
- Replaced database queries with direct filesystem scanning of /etc/letsencrypt/live/
- Uses 'find' command to discover all domains with Let's Encrypt certificates
- More reliable as it works even if database is out of sync
Benefits:
- No silent failures - errors are logged but don't stop the entire process
- Works independently of database state
- Simpler and more straightforward
- All domains with certificates get processed regardless of database
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
Simplified all certificate renewal scripts to be more straightforward and reliable:
- Scripts now just run certbot renew and copy cert+key files to HAProxy format
- Removed overly complex retry logic and error handling
- Both in-container and host-side scripts work with cron scheduling
Added automatic certbot cleanup when domains are removed:
- When a domain is deleted via API, certbot certificate is also removed
- Prevents renewal errors for domains that no longer exist in HAProxy
- Cleans up both HAProxy combined cert and Let's Encrypt certificate
Script changes:
- renew-certificates.sh: Simplified to 87 lines (from 215)
- sync-certificates.sh: Simplified to 79 lines (from 200+)
- host-renew-certificates.sh: Simplified to 36 lines (from 40)
- All scripts use same pattern: query DB, copy certs, reload HAProxy
Python changes:
- remove_domain() now calls 'certbot delete' to remove certificates
- Prevents orphaned certificates from causing renewal failures
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
After certbot renews certificates, the separate fullchain.pem and privkey.pem
files must be combined into a single .pem file for HAProxy. The renewal script
was missing this critical step, causing HAProxy to continue using old certificates.
Changes:
- Add update_combined_certificates() function to renew-certificates.sh
- Query database for all SSL-enabled domains
- Combine Let's Encrypt cert + key files using cat (matches haproxy_manager.py pattern)
- Always update combined certs after renewal, even if certbot says no renewal needed
- Add new sync-certificates.sh script for syncing all existing certificates
- Smart update detection in sync script (only updates when source is newer)
This ensures HAProxy always gets properly formatted certificate files after renewal.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
shadowdaoandClaude Opus 5