Enhance setup documentation with node joining instructions and add glossary for key terms

docs/SETUP.md

@@ -72,10 +72,11 @@ For larger workloads or high availability, you can add more nodes:
 
 ```bash
 # On your master node, get the node token
-sudo cat /var/lib/rancher/k3s/server/node-token
+NODE_TOKEN=`sudo cat /var/lib/rancher/k3s/server/node-token`
-
+MASTER_IP=192.168.8.222
 # On each new node, join the cluster
-curl -sfL https://get.k3s.io | K3S_URL=https://MASTER_IP:6443 K3S_TOKEN=NODE_TOKEN sh -
+
+curl -sfL https://get.k3s.io | K3S_URL=https://$MASTER_IP:6443 K3S_TOKEN=$NODE_TOKEN sh -
 ```
 
 ## Next Steps

docs/glossary.md

@@ -0,0 +1,15 @@
+# Cluster
+
+- LAN
+- cluster
+
+## LAN
+
+- router
+
+## Cluster
+
+- nameserver
+- node
+- master
+- load balancer

docs/lan-routers/GL-iNet.md

@@ -1,3 +1,12 @@
 # GL-iNet LAN Router Setup
 
-TBD
+- Applications > Dynamic DNS > Enable DDNS
+  - Enable
+  - Use Host Name as your CNAME at Cloudflare.
+- Network > LAN > Address Reservation
+  - Add all cluster nodes.
+- Network > Port Forwarding
+  - Add TCP, port 22 to your bastion
+  - Add TCP/UDP, port 443 to your cluster load balancer.
+- Network > DNS > DNS Server Settings
+  - Set to cluster DNS server IP