Types
SSL Certificate
Monitor TLS certificate validity and expiration to avoid service trust failures.
SSL monitors assess certificate validity (chain + expiry window). They’re ideal for preventing unnoticed expirations.
Key Checks
- Certificate retrieval success
- Expiry date not passed (and optionally within warning threshold surfaced in UI / future feature)
- Basic trust chain resolution
Settings
| Field | Description | Example |
|---|---|---|
| host | Domain (optionally with port if non‑443) | app.example.com |
| ttl | Check interval seconds | 3600 |
Status Labels
- Good (valid) – certificate accepted
- Invalid (bad) – fetch failed, expired, or trust error
Best Practices
- Use a longer TTL (e.g. hourly) since certificates rarely change minute‑to‑minute.
- Combine with HTTP monitor for application reachability.