Add remote node support to nullpoint cluster

- Full nodes: contribute storage, act as lighthouses
- Remote nodes: don't contribute storage, not lighthouses, but have full read/write access
- Expanded README with clearer feature descriptions
- Interactive node type selection during join
- Remote nodes useful for edge locations or low-storage devices

README.md

@@ -51,10 +51,23 @@ The installer will:
   <br>
 </div>
 
-Distributed storage cluster with [Nebula](https://github.com/slackhq/nebula) mesh networking and [GlusterFS](https://www.gluster.org/).
+Encrypted network and storage pool using [Nebula](https://github.com/slackhq/nebula) mesh VPN and [GlusterFS](https://www.gluster.org/) distributed filesystem.
+
+### Features
+
+- **Encrypted mesh network** - All traffic encrypted via Nebula overlay (192.168.100.0/24)
+- **Distributed storage** - Data replicated across all storage nodes
+- **Simple joining** - Single preshared secret + lighthouse endpoint
+- **Flexible nodes** - Full nodes (replicate data) or remote nodes (no storage)
+
+### Setup
 
 ```bash
 wget -qO- https://git.dominik-roth.eu/dodox/nullpoint/raw/branch/master/cluster-setup.sh | sudo bash
 ```
 
-Join via single preshared secret and at least one lighthouse server. Storage replicated across all nodes at `/data/storage/`.
+Choose your node type:
+- **Full node** - Contributes storage, becomes lighthouse, read/write access
+- **Remote node** - Full read/write access, no local storage contribution
+
+Storage mounted at `/data/storage/` on all nodes.

cluster-setup.sh

@@ -142,13 +142,20 @@ create_cluster() {
         exit 1
     fi
     
-    # Ask if this node should be a lighthouse
+    # Ask about node type
-    read -p "Should this node be a lighthouse? [Y/n]: " is_lighthouse
+    echo -e "${YELLOW}Select node type:${NC}"
-    is_lighthouse=${is_lighthouse:-Y}
+    echo "  1) Full node (contributes storage, lighthouse, read/write)"
-    if [[ "$is_lighthouse" =~ ^[Yy] ]]; then
+    echo "  2) Remote node (no storage contribution, not lighthouse)"
-        am_lighthouse="true"
+    read -p "Enter choice [1-2]: " node_type
-    else
+    
+    if [ "$node_type" = "2" ]; then
+        is_remote="true"
         am_lighthouse="false"
+        echo -e "${YELLOW}Configuring as remote node (no storage contribution)${NC}"
+    else
+        is_remote="false"
+        am_lighthouse="true"
+        echo -e "${YELLOW}Configuring as full node${NC}"
     fi
     
     # Generate Nebula CA
@@ -269,13 +276,20 @@ join_cluster() {
     nebula_port=$(echo "$cluster_secret" | cut -d: -f2)
     ca_cert_b64=$(echo "$cluster_secret" | cut -d: -f3-)
     
-    # Ask if this node should be a lighthouse
+    # Ask about node type
-    read -p "Should this node be a lighthouse? [Y/n]: " is_lighthouse
+    echo -e "${YELLOW}Select node type:${NC}"
-    is_lighthouse=${is_lighthouse:-Y}
+    echo "  1) Full node (contributes storage, lighthouse, read/write)"
-    if [[ "$is_lighthouse" =~ ^[Yy] ]]; then
+    echo "  2) Remote node (no storage contribution, not lighthouse)"
-        am_lighthouse="true"
+    read -p "Enter choice [1-2]: " node_type
-    else
+    
+    if [ "$node_type" = "2" ]; then
+        is_remote="true"
         am_lighthouse="false"
+        echo -e "${YELLOW}Configuring as remote node (no storage contribution)${NC}"
+    else
+        is_remote="false"
+        am_lighthouse="true"
+        echo -e "${YELLOW}Configuring as full node${NC}"
     fi
     
     echo -e "${YELLOW}[+] Configuring Nebula (IP: ${my_ip})...${NC}"
@@ -367,8 +381,21 @@ EOF
     # Register with cluster
     echo "${my_ip} ${hostname} $(date)" >> "${NEBULA_CONFIG}/cluster-registry.txt"
     
-    # Join GlusterFS cluster
+    # Handle GlusterFS setup based on node type
-    echo -e "${YELLOW}[+] Joining GlusterFS cluster...${NC}"
+    if [ "$is_remote" = "true" ]; then
+        # Remote node - just mount, don't contribute storage
+        echo -e "${YELLOW}[+] Mounting GlusterFS...${NC}"
+        
+        # Mount the volume with full read/write access
+        mount -t glusterfs 192.168.100.1:/${GLUSTER_VOLUME} ${GLUSTER_MOUNT_PATH}
+        
+        # Add to fstab
+        grep -q "${GLUSTER_VOLUME}" /etc/fstab || echo "192.168.100.1:/${GLUSTER_VOLUME} ${GLUSTER_MOUNT_PATH} glusterfs defaults,_netdev 0 0" >> /etc/fstab
+        
+        echo -e "${GREEN}Remote node configured - full access to cluster storage without contributing local storage${NC}"
+    else
+        # Full node - full participation
+        echo -e "${YELLOW}[+] Joining GlusterFS cluster as full node...${NC}"
         
         # Try to probe existing nodes
         echo -e "${YELLOW}[+] Looking for existing GlusterFS peers...${NC}"
@@ -396,12 +423,16 @@ EOF
         # Add to fstab
         grep -q "${GLUSTER_VOLUME}" /etc/fstab || echo "192.168.100.1:/${GLUSTER_VOLUME} ${GLUSTER_MOUNT_PATH} glusterfs defaults,_netdev 0 0" >> /etc/fstab
         
+        echo -e "${GREEN}Full node configured - contributing storage to cluster${NC}"
+    fi
+    
     echo -e "\n${GREEN}════════════════════════════════════════${NC}"
     echo -e "${GREEN}Successfully joined cluster!${NC}"
     echo -e "${GREEN}════════════════════════════════════════${NC}\n"
     echo -e "${YELLOW}Node details:${NC}"
     echo "  - Nebula IP: ${my_ip}"
     echo "  - Hostname: ${hostname}"
+    echo "  - Node type: $([ "$is_remote" = "true" ] && echo "Remote (no storage)" || echo "Full (contributes storage)")"
     echo "  - GlusterFS mounted at: ${GLUSTER_MOUNT_PATH}"
 }