Hi everyone, I'm still learning how to use Proxmox fully and I wanted to ask you if there was a way to set up DHCP on Proxmox so that if I move to another network the machine can still connect and I can connect to it.
set DHCP on proxmox
- Thread starter Francesco04
- Start date
Hey,
I assume you mean that the PVE host uses DHCP instead of a statically configured IP, not setting up a DHCP server on the host.
It is recommended to stick with a static IP for the PVE host, for standalone hosts changing the IP is somewhat straight forward, you basically have to update both
-
- and
In a cluster this is more involved.
If you still decide to go with DHCP you can change
in
But keep in mind you still have to update
I assume you mean that the PVE host uses DHCP instead of a statically configured IP, not setting up a DHCP server on the host.
It is recommended to stick with a static IP for the PVE host, for standalone hosts changing the IP is somewhat straight forward, you basically have to update both
-
/etc/network/interfaces- and
/etc/hostsIn a cluster this is more involved.
If you still decide to go with DHCP you can change
Code:
auto vmbr0
iface vmbr0 inet static
address 192.168.17.15/23
.../etc/network/interfaces to
Code:
auto vmbr0
iface vmbr0 inet dhcp/etc/hosts manually, as PVE expects this to match its actual IP.
To expand on Hannes’s point: Proxmox VE relies on its current IP being accurately reflected in /etc/hosts. Manually updating this file each time the IP changes can be tedious and error-prone, especially if you're relying on remote access.
If you're using DHCP and want to automate this step, you can add a DHCP client hook at
Be sure to replace
This ensures your
If you're using DHCP and want to automate this step, you can add a DHCP client hook at
/etc/dhcp/dhclient-exit-hooks.d/:
Bash:
# /etc/dhcp/dhclient-exit-hooks.d/update-etc-hosts
if ([ $reason = "BOUND" ] || [ $reason = "RENEW" ])
then
sed -i "s/^.*\spve.example.com\s.*$/${new_ip_address} pve.example.com pve/" /etc/hosts
fipve.example.com with your actual Proxmox node hostname. You can verify it using:
Bash:
hostname -A/etc/hosts file stays in sync with your DHCP-assigned IP.question and what if I wanted to change the IP with one of another class instead?
there is no difference between changing the IP or the subnet, both are part of the address, it doesn't matter which part of the address is changed.