Added PVE-to-PBS-Backup & OVHCloud-DDNS-API-Setup

OVHCloud/SetupAPI-Key_ddns-updater.md

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+# OVHCloud api DDNS Setup
+This system uses OVH's API v1 and [ddns-updater](https://github.com/qdm12/ddns-updater "Lightweight universal DDNS Updater program
+")
+## Get record ID(s) in preparation for generating the API keys
+* First make sure the required `A` and `AAAA` for the (sub)domain exist in OVHCloud's manager.
+* Go to OVHCloud API Console's [Auth page]( "OVHCloud API Console").
+* Click `Login with OVHCloud SSO`, and follow the steps.
+* Go to OVHCloud API Console's [List record]("OVHCloud API Console").
+* Enter the domain name (without subdomain) under `zoneName`.
+* If you want to update a subdomain enter this in `subDomain`.
+* Enter `A` in the `fieldType` field
+* Click the Blue `EXECUTE` button
+* Note the number given in the response field
+* If you also want to update IPv6 record enter `AAAA` in the ` fieldType` field
+* Click the Blue `EXECUTE` button
+* Note the number given in the response field
+
+## Generating the API keys
+
+* Go to the OVHCloud [API Key generator]("OVHCloud Auth")
+* Enter a Application name (example: "mydomain-subdomain-DDNS").
+* Enter a Application Description (example: "subdomain.mydomain.com  DNS Updater").
+* Set Validity to `Unlimited`
+* Add the following rights:
+```
+GET: /domain/zone/<DomainName>/record
+PUT: /domain/zone/<DomainName>/record/<IPv4 Record ID>
+PUT: /domain/zone/<DomainName>/record/<IPv6 Record ID>
+POST: /domain/zone/<DomainName>/refresh
+```
+
+## ddns-updater example config
+```
+{
+    "settings": [
+        {
+        "provider": "ovh",
+        "mode": "api",
+        "domain": "quartz.nxdi.nl",
+        "api_endpoint": "ovh-eu",
+        "app_key": "<app_key>",
+        "app_secret": "<app_secret>",
+        "consumer_key": "<consumer_key>",
+        "ip_version": "ipv4"
+        },
+         {
+        "provider": "ovh",
+        "mode": "api",
+        "domain": "quartz.nxdi.nl",
+        "api_endpoint": "ovh-eu",
+        "app_key": "<app_key>",
+        "app_secret": "<app_secret>",
+        "consumer_key": "<consumer_key>",
+        "ip_version": "ipv6",
+        "ipv6_suffix": ""
+        }
+    ]
+}
+
+
+```