Pierre-Olivier Mercier
5ccdd8892f
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Add individual reference pages for all domain health checkers (EN/FR), update the homepage feature descriptions in both languages to highlight monitoring, notifications, and domain availability checks.
36 lines
1.6 KiB
Markdown
36 lines
1.6 KiB
Markdown
---
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date: 2026-06-11T09:00:00+02:00
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title: Checkers
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author: nemunaire
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archetype: chapter
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weight: 35
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aliases:
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checkers
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---
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Checkers are the building blocks of happyDomain's monitoring system. Each one collects data about a domain, a zone or a service, evaluates it against a set of rules, and reports a clear status (OK, Warning, Critical or Error).
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This chapter documents every checker shipped with happyDomain: what it verifies, the scope it applies to, the options you can tune, and the rules it evaluates. For the day-to-day workflow of configuring, scheduling and reading checks in the interface, see {{< relref "/pages/checks" >}}.
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## Scopes
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Every checker declares the scope it operates on:
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- **Domain-level** — concerns the domain itself, independent of its DNS records (registration status, expiry, transfer lock…).
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- **Zone-level** — needs the full zone content (DNSSEC validation, delegation consistency…).
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- **Service-level** — targets a specific service published on a subdomain (HTTP, TLS, ping…), and is configured from that service's own **Checks** tab.
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## Statuses
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Checkers report one of the following statuses, in order of severity:
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| Status | Meaning |
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|--------|---------|
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| **OK** | Everything is within acceptable parameters |
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| **Info** | Informational finding, no action needed |
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| **Warning** | A threshold is approaching; attention recommended |
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| **Critical** | A threshold has been exceeded; action required |
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| **Error** | The check itself failed (collection error, bad configuration) |
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| **Unknown** | The check could not determine a result |
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{{% children %}}
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