feature: automatically insert tailscale ip as node ip, and auto setup CPU pinning

Author: lukepolo

src/game-server-node/game-server-node.controller.ts

@@ -223,6 +223,39 @@ export class GameServerNodeController {
         echo "Installing k3s";
         curl -sfL https://get.k3s.io | K3S_URL=https://${process.env.TAILSCALE_NODE_IP}:6443 K3S_TOKEN=${process.env.K3S_TOKEN} sh -s - --node-name ${gameServerNodeId} --vpn-auth="name=tailscale,joinKey=${game_server_nodes_by_pk.token}";
 
+        echo "Waiting for Tailscale IP";
+
+        for i in {1..30}; do
+          TS_IP=$(tailscale ip -4 2>/dev/null | head -n 1)
+          if [ -n "$TS_IP" ]; then
+            break
+          fi
+          sleep 2
+        done
+
+        if [ -z "$TS_IP" ]; then
+          echo "ERROR: Tailscale IP not assigned"
+          exit 1
+        fi
+
+        echo "Tailscale IP acquired: $TS_IP"
+
+        mkdir -p /etc/rancher/k3s
+
+        rm -f /etc/rancher/k3s/config.yaml
+
+cat <<-EOF >/etc/rancher/k3s/config.yaml
+	node-ip: $TS_IP
+
+	kubelet-arg:
+	  - "cpu-manager-policy=static"
+	  - "cpu-manager-reconcile-period=5s"
+	  - "system-reserved=cpu=1"
+	  - "kube-reserved=cpu=1"
+EOF
+
+        systemctl restart k3s-agent
+
         mkdir -p /opt/5stack/demos
         mkdir -p /opt/5stack/steamcmd
         mkdir -p /opt/5stack/serverfiles