Add gandi-live-dns-rust

.vscode/settings.json

@@ -1,5 +1,3 @@
 {
-  "cSpell.words": [
-    "Actix"
-  ]
+  "cSpell.words": ["Actix", "Gandi"]
 }

content/posts/2022.12.29.hosting-websites-without-static-IP-Gandi.md

@@ -0,0 +1,63 @@
+---
+title: "Hosting websites without a static IP with Gandi LiveDNS"
+date: 2022-12-29T18:11:42-05:00
+toc: false
+images:
+tags:
+  - web
+  - homelab
+---
+
+I've been hosting this website at home now for a few years. My ISP doesn't offer
+a static IP address however, which means my IP address occasionally changes.
+This is sort of a dealbreaker, because your domain will be left pointing to the
+wrong address whenever your IP address changes.
+Luckily you can solve this by using a dynamic DNS solution, like DynDNS, but these
+can be pretty pricy.
+
+Which is why I was very excited when I saw [gandi.net](https://www.gandi.net/)
+has a system they call "LiveDNS" which allows you to update the IP address your
+domain points to very quickly. Their website advertises that updates are
+propagated in under 250ms which is amazing. Although other DNS servers may cache
+results and not update for significantly longer, that's not a massive issue for
+me. My IP address doesn't change that often, and my personal blog having a short
+downtime is not a big deal.
+
+Gandi provides this service at no additional cost, all you need to do is to
+register your domain with them (or transfer it over). I've been using them for
+years and have had great service, and the LiveDNS is the cherry on top.
+
+## Updating your IP
+
+Unlike some other dynamic DNS providers, Gandi does not provide a program that
+you can use to update your IP address. But being an open API, there are many
+programs and scripts you can use to update your IP. One of these is a program I
+made, [gandi-live-dns-rust](https://github.com/SeriousBug/gandi-live-dns-rust).
+
+After installing `gandi-live-dns` on my home server (I used the ArchLinux
+package, but there are other options available), I copied over the
+[example configuration](https://github.com/SeriousBug/gandi-live-dns-rust/blob/master/example.toml)
+
+in the repository. I just added my domain, obtained an API key and set it up,
+then I just added the subdomains I want.
+
+```
+fqdn = "bgenc.net"
+api_key = "key goes here"
+
+[[entry]]
+name = "@"
+types = ["A"]
+
+[[entry]]
+name = "gitea"
+types = ["A"]
+
+[[entry]]
+fqdn = "kaangenc.me"
+name = "@"
+types = ["A"]
+```
+The configuration file is a bit trimmed, but it shows the gist of everything.
+I'm updating `bgenc.net`, along with `gitea.bgenc.net`. I also update
+`kaangenc.me`, which is an old domain I was using.