Add local knot binding
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content/deploy/knot.en.md
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content/deploy/knot.en.md
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---
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data: 2023-02-09T09:12:25+01:00
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title: Connect to a local knot
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weight: 21
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---
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[Knot](https://knot-dns.cz) is an authoritative DNS server developed by the [cz.nic](https://nic.cz) association.
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It is possible to use it with happyDomain through [Dynamic DNS (RFC 2136)](https://www.rfc-editor.org/rfc/rfc2136).
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## Configure Knot to enable Dynamic DNS
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First, you have to edit the main knot configuration file (usually `/etc/knot/knot.conf`) to add a secret that will be shared between happyDomain and knot to authenticate the changes. Then you have to indicate which domains will be managed by happyDomain.
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### Adding a shared secret {#shared-secret}
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Under the main [`key`](https://knot.readthedocs.io/en/latest/reference.html#key-section) section of your configuration, add the following key:
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```yaml
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key:
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[...]
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- id: happydomain
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algorithm: hmac-sha512
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secret: "<SOME_SECRET>"
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```
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Obviously replace `<SOME_SECRET>` with a string as obtained with `openssl rand -base64 48`.
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### Creating an authorization rule for happyDomain
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In addition to the key, you must specify in the configuration how the key can be used.
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To do this, under the main [`acl`](https://knot.readthedocs.io/en/latest/reference.html#acl-section) section, we add:
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```yaml
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acl:
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[...]
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- id: acl_happydomain
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key: happydomain
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action: transfer
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action: update
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```
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This associates the `key` defined just before with the actions `transfer` and `update`, respectively to allow retrieving the zone and to update records.
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### Associate the authorization to each zone
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Now that you have created a rule allowing the `happydomain` key to make changes, you need to indicate to which zones this rule applies.
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For each [zone](https://knot.readthedocs.io/en/latest/reference.html#zone-section), you must add an [`acl`](https://knot.readthedocs.io/en/latest/reference.html#acl) element referencing the `acl_happydomain` rule:
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For example, for an existing `happydomain.org` zone, we will add the `acl` line as follows:
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```yaml
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zone:
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[...]
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- domain: happydomain.org
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acl:
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- acl_happydomain
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[...]
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```
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The `acl` element is a list, so you may already have other acl elements in this list. In this case you just need to add the `acl_happydomain` element to the already existing list.
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You have to add this `acl` element for each zone, unless you use the following trick.
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### Associate the authorization to all zones
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If you manage many zones, it may be more convenient to set the default authorization for all zones. In this case, instead of the previous section, we will modify the `default` template:
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```yaml
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template:
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- id: default
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acl:
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- acl_happydomain
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[...]
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```
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The `default` template is applied to all zones by default. By doing so, all zones will inherit the `acl_happydomain` rule.
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### Apply the configuration
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Now that the configuration file has been modified, tell `knotd` to reload its configuration:
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```sh
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knotc reload
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```
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## Link happyDomain and knot
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Once `knot` well configured, you can link it to happyDomain using [the *Dynamic DNS* connector]({{< ref "/pages/source-new-choice.md" >}}) :
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![The Dynamic DNS connector on the host selection page](/img/choose-dynamic-dns.png)
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Then fill in the form with the address where your `knot` server is accessible, then fill in the different *Key* fields with [the information from the `knot`'s `key` section](#shared-secret):
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- **Key Name** : corresponds to `id` in knot's configuration ;
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- **Key Algorithm** : corresponds to `algorithm` ;
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- **Secret Key** : corresponds to `secret`.
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Once the provider is added, it does not allow you to list existing domains, but you can still manually add all your domains.
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content/deploy/knot.fr.md
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---
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data: 2023-02-09T08:03:25+01:00
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title: Connexion à un knot local
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weight: 21
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---
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[Knot](https://knot-dns.cz) est un serveur DNS faisant autorité développé par l'association [cz.nic](https://nic.cz).
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Il est possible de l'utiliser avec happyDomain en passant par le [Dynamic DNS (RFC 2136)](https://www.rfc-editor.org/rfc/rfc2136).
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## Configurer Knot pour permettre le Dynamic DNS
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Tout d'abord, il faut éditer le fichier de configuration principal de knot (généralement `/etc/knot/knot.conf`) afin d'ajouter un secret qui sera partagé entre happyDomain et knot pour authentifier les modifications. Puis il faudra indiquer quels domaines vont être gérés par happyDomain.
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### Ajout d'un secret partagé {#shared-secret}
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Sous la section principale [`key`](https://knot.readthedocs.io/en/latest/reference.html#key-section) de votre configuration, ajoutez la clef suivante :
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```yaml
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key:
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[...]
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- id: happydomain
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algorithm: hmac-sha512
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secret: "<SOME_SECRET>"
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```
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Remplacez évidemment `<SOME_SECRET>` par une chaîne de caractères telle qu'obtenue avec `openssl rand -base64 48`.
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### Création d'une autorisation pour happyDomain
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En plus de la clef, vous devez préciser dans la configuration comment la clef peut être utilisée.
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Pour cela, sous la section principale [`acl`](https://knot.readthedocs.io/en/latest/reference.html#acl-section), on ajoute :
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```yaml
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acl:
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[...]
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- id: acl_happydomain
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key: happydomain
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action: transfer
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action: update
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```
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Cela associe la `key` définie juste avant aux actions `transfer` et `update`, respectivement pour permettre de récupérer la zone et pour mettre à jour des enregistrements.
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### Associer l'autorisation à chaque zone
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Maintenant que vous avez créé une règle autorisant la clef `happydomain` à apporter des modifications, il faut indiquer à quelles zones cette règle s'applique.
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Pour chaque [zone](https://knot.readthedocs.io/en/latest/reference.html#zone-section), il faut ajouter un élément [`acl`](https://knot.readthedocs.io/en/latest/reference.html#acl) référençant la règle `acl_happydomain` :
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Par exemple, pour une zone `happydomain.org` déjà existante, on ajoutera la ligne `acl` comme suit :
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```yaml
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zone:
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[...]
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- domain: happydomain.org
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acl:
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- acl_happydomain
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[...]
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```
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L'élément `acl` est une liste, vous pouvez donc avoir déjà d'autres éléments `acl` dans cette liste. Il convient alors d'ajouter simplement l'élément `acl_happydomain` à la liste déjà existante.
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Il faut ajouter cet élément `acl` pour chaque zone, sauf à utiliser l'astuce suivante.
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### Associer l'autorisation à toutes les zones
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Si vous gérez de nombreuses zones, il peut être plus pratique de définir l'autorisation par défaut pour toutes les zones. Dans ce cas, à la place de la section précédente, on modifiera le modèle `default` :
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```yaml
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template:
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- id: default
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acl:
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- acl_happydomain
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[...]
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```
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Le modèle `default` est appliqué par défaut à toutes les zones. En faisant ainsi, toutes les zones hériteront de la règle `acl_happydomain`.
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### Appliquer la configuration
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Maintenant que le fichier de configuration a été modifié, indiquez à `knotd` qu'il doit recharger sa configuration :
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```sh
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knotc reload
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```
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## Liaison entre happyDomain et knot
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Une fois `knot` bien configuré, vous pouvez le relier à happyDomain en utilisant [le connecteur *Dynamic DNS*]({{< ref "/pages/source-new-choice.md" >}}) :
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![Le connecteur Dynamic DNS sur la page de choix de l'hébergeur](/img/choose-dynamic-dns.png)
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Remplissez ensuite le formulaire avec l'adresse à laquelle votre serveur `knot` est accessible, puis ensuite les différents champs *Key* avec [les informations de la section `key` de `knot`](#shared-secret) :
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- **Key Name** : correspond au champ `id` ;
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- **Key Algorithm** : correspond au champ `algorithm` ;
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- **Secret Key** : correspond au champ `secret`.
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Une fois le fournisseur ajouté, il ne permet pas de lister les domaines existants, mais vous pouvez tout de même ajouter manuellement tous vos domaines.
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