I change the IP of my router, how can I change the static IP of my promox server?

[vinnfts]

My router is 192.168.1.1 now, and my promox server is 192.168.1.5 now
I would like to change my router to 192.168.9.1 and my promox server is 192.168.9.6 for example.
Which file I need to change in promox server to change the fix IP?

 

[UdoB]

Which file I need to change in promox server to change the fix IP?

You are looking for /etc/network/interfaces but have never dealt with it on a Debian system before? Be careful!

You can find the offical documentation and also some examples here: https://pve.proxmox.com/pve-docs/pve-admin-guide.html#sysadmin_network_configuration