Add note on Apache as unsupported

related to https://github.com/juanfont/headscale/pull/1144

Signed-off-by: Christian Heusel <christian@heusel.eu>

api.go

@@ -78,7 +78,7 @@ var registerWebAPITemplate = template.Must(
 		<p>
 			Run the command below in the headscale server to add this machine to your network:
 		</p>
-		<pre><code>headscale -n NAMESPACE nodes register --key {{.Key}}</code></pre>
+		<pre><code>headscale nodes register --user USERNAME --key {{.Key}}</code></pre>
 	</body>
 </html>
 `))

docs/dns-records.md

@@ -80,4 +80,4 @@ server {
 
 ## Limitations
 
-[Not all types of records are supported](https://github.com/tailscale/tailscale/blob/main/ipn/ipnlocal/local.go#L2891-L2909), especially no CNAME records.
+[Not all types of records are supported](https://github.com/tailscale/tailscale/blob/6edf357b96b28ee1be659a70232c0135b2ffedfd/ipn/ipnlocal/local.go#L2989-L3007), especially no CNAME records.

docs/reverse-proxy.md

@@ -112,3 +112,9 @@ The following Caddyfile is all that is necessary to use Caddy as a reverse proxy
 Caddy v2 will [automatically](https://caddyserver.com/docs/automatic-https) provision a certficate for your domain/subdomain, force HTTPS, and proxy websockets - no further configuration is necessary.
 
 For a slightly more complex configuration which utilizes Docker containers to manage Caddy, Headscale, and Headscale-UI, [Guru Computing's guide](https://blog.gurucomputing.com.au/smart-vpns-with-headscale/) is an excellent reference.
+
+## Apache
+
+Apache is NOT supported. It will not work. Apache [overwrites](https://github.com/svn2github/apache-httpd/blob/82779fce1be478e2333afc9fef86d34f88db718b/modules/proxy/mod_proxy_wstunnel.c#L354) the custom upgrade header of thw WebSockets connection, which is required for the Tailscale TS2021 protocol.
+
+Please use any other reverse proxy.

machine.go

@@ -352,7 +352,7 @@ func (h *Headscale) ListMachines() ([]Machine, error) {
 
 func (h *Headscale) ListMachinesByGivenName(givenName string) ([]Machine, error) {
 	machines := []Machine{}
-	if err := h.db.Preload("AuthKey").Preload("AuthKey.User").Preload("User").Find(&machines).Where("given_name = ?", givenName).Error; err != nil {
+	if err := h.db.Preload("AuthKey").Preload("AuthKey.User").Preload("User").Where("given_name = ?", givenName).Find(&machines).Error; err != nil {
 		return nil, err
 	}