changing-server-ip.md

Changing Server IP

If you need to change your server IP for some reason, follow the procedure:

1. Obtain your $server_ip, $netmask and $gateway_ip (and get or calculate your $network)
2. Make the appropriate changes in /etc/initramfs-tools/initramfs.conf (see the format)
3. Update initramfs
4. Make the appropriate changes in /etc/network/interfaces
5. Reboot and verify your settings.

Verification

1. Directly connect your laptop to your server via ethernet.

2. Make your laptop a gateway with make-gateway:

   sudo ./make-gateway --wan wlp2s0 --lan eth0 --ip $gateway_ip
   

3. Create a route to your server:

   sudo ip route add $network/$netmask dev eth0
   

4. Add your server_ip to /etc/hosts:

   server_ip     example.com
   

5. Try to connect over ssh without using an IP.