docs: update DNS tutorial

docs/src/deployment/configuration.md

@@ -50,6 +50,8 @@ Change the following parameters based on your hardware.
 
 ## Update Ingresses to point to your domain
 
+> Use [`home.arpa`](https://datatracker.ietf.org/doc/html/rfc8375) if you don't have a domain
+
 My domain is `khuedoan.com`, run the following command to replace it with yours:
 
 ```sh

docs/src/deployment/dns.md

@@ -1,14 +1,40 @@
 # DNS setup
 
-Because everyone DNS setup is different, DNS automation is not in the scope of the project.
+Because everyone DNS setup are different, DNS automation is not in the scope of the project.
 
-Some options for DNS config:
+Some options for DNS config (choose one):
 
+- Update the `/etc/hosts` file (suitable for a test environment)
 - Change the DNS config in your router
-- Run your own DNS server in the cluster
+- Change the DNS config at your domain registrar (doesn't work with the [`home.arpa`](https://datatracker.ietf.org/doc/html/rfc8375) domain)
-- Change the DNS config in your domain registrar
 
-For example here is my set up using the third option with Cloudflare, automated using Terraform:
+Before continuing to the next section for some examples, run this command to get a list of subdomain and its address:
+
+```sh
+./scripts/get-dns-config
+```
+
+## Update `/etc/hosts`
+
+You paste the output from the command above directly to your `/etc/hosts` file like this:
+
+```
+# Static table lookup for hostnames.
+# See hosts(5) for details.
+
+192.168.1.150 argocd.mydomain.com
+192.168.1.150 git.mydomain.com
+192.168.1.150 jellyfin.mydomain.com
+# etc.
+```
+
+## In your router
+
+You can add each subdomain one by one like the previous method, or use a wildcard `*.mydomain.com` and point it to the IP address of the load blancer (from the output of the previous command)
+
+## At your domain registrar
+
+For example here is my set up for Cloudflare, automated using Terraform:
 
 ```hcl
 resource "cloudflare_record" "homelab_records" {

docs/src/try_on_a_vm.md

@@ -23,21 +23,7 @@ make -C metal dev
 make bootstrap
 ```
 
-Get the Ingress addresses and IPs:
+Finally follow the [DNS guide](./deployment/dns.md) to update your DNS setup (the easiest one is the `/etc/hosts` option)
-
-```sh
-export KUBECONFIG=$PWD/metal/kubeconfig.yaml
-kubectl get ingress -A
-```
-
-Then update your `/etc/hosts` or your router DNS config based on the output:
-
-```
-192.168.1.150 argocd.mydomain.com
-192.168.1.150 git.mydomain.com
-192.168.1.150 jellyfin.mydomain.com
-# etc.
-```
 
 ## Clean up