Adding script to apply custom network attachment definition for secondary interface (#107)

Signed-off-by: S, Deepak <[email protected]>
Co-authored-by: Krishnamurthy Jambur <[email protected]>

Author: deepaks2

standalone-node/docs/user-guide/desktop-virtualization-cloud-init.md

@@ -59,6 +59,22 @@ write_files:
     content: |
       SUBSYSTEM=="usb", MODE="0664", GROUP="qemu"
 
+  - path: /etc/cloud/custom_network.conf
+    permissions: '0644'
+    content: |
+      # custom_network.conf
+      # Update this file to specify custom network settings for the bridge configuration script.
+      # Set the CIDR, gateway, netmask, IP range, and DNS server for your environment.
+      # If EdgeNode cannot reach Internet. DNS update needed.
+
+      BR_NAME="br0"                    # Bridge interface name
+      BR_CIDR="199.168.1.0/24"         # Bridge interface IP address and subnet (CIDR notation)
+      BR_GATEWAY="199.168.1.1"         # Default gateway for the bridge network
+      BR_NETMASK="24"                  # Netmask for the bridge network (as a number, e.g., 24)
+      BR_START_RANGE="199.168.1.2"     # Start of the DHCP/static IP range for clients
+      BR_END_RANGE="199.168.1.20"      # End of the DHCP/static IP range for clients
+      BR_DNS_NAMESERVER="8.8.8.8"      # DNS server to use for the bridge network.
+
 # === Custom run commands ===
 # List commands or scripts to run at boot.
 # Note : Make sure syntax is correct for the commands,if any issues in commands error messages will be present 
@@ -67,9 +83,15 @@ write_files:
 #   runcmd:
 #     - systemctl restart myservice
 #     - bash /etc/cloud/test.sh
+# If custom scripts in user-apps are getting not getting invoked. please make sure to add the scripts in "user-apps" folder
+# Example:
+#   runcmd:
+#     - bash /opt/user-apps/network-config.sh /etc/cloud/custom_network.conf
 runcmd:
   - echo $(( 6 * 1024 * 4 )) | sudo tee /sys/kernel/mm/hugepages/hugepages-2048kB/nr_hugepages
   - systemctl --user enable idv-init.service
   - udevadm control --reload-rules
+  - test -f /opt/user-apps/network_config.sh && bash /opt/user-apps/network_config.sh /etc/cloud/custom_network.conf || echo "network_config.sh is missing"
+  - test -f /opt/user-apps/apply_bridge_nad.sh && bash /opt/user-apps/apply_bridge_nad.sh /etc/cloud/custom_network.conf > /etc/cloud/apply_bridge_nad.log 2>&1 & || echo "apply_bridge_nad.sh is missing"
 
 ```