Added docs

docs/ref/node-management.md

@@ -0,0 +1,38 @@
+# Node management
+
+See https://tailscale.com/kb/1099/device-approval for more information.
+
+## Setup
+
+### 1. Change the configuration
+
+1. Change the `config.yaml` to contain the desired records like so:
+
+   ```yaml
+   node_management:
+     manual_approve_new_node: true
+   ```
+
+2. Restart your headscale instance.
+
+## Usage
+
+### Pre-approve a node using preauthkeys
+
+1. Create preauthkey with a pre-approve option
+
+```bash
+headscale preauthkeys create --user=<USER_NAME> --pre-approved
+```
+
+2. Register a node on the headscale using preauthkey (with the pre-approval option enabled)
+
+```bash
+headscale nodes register --user=<USER_NAME> --mkey=mkey:<MACHINE_KEY> --auth-key=<PREAUTHKEY_PRE_APPROVED>
+```
+
+### Node approval after registration without the option to pre-approve the authentication key
+
+```bash
+headscale nodes approve --identifier=<NODE_ID>
+```

mkdocs.yml

@@ -178,6 +178,7 @@ nav:
       - Exit node: ref/exit-node.md
       - TLS: ref/tls.md
       - ACLs: ref/acls.md
+      - Node management: ref/node-management.md
       - DNS: ref/dns.md
       - Remote CLI: ref/remote-cli.md
       - Integration: