Create VM with custom image results in machines with conflict IP

Incus
1

So basically I create a new VM using ubuntu/noble/cloudimage. Then install openssh-server and reset password of the user ubuntu. After than I take a snapshot and export it as an image.

Now I tried to create another VM using the newly created image, and it results in the two machine with the same IP address.

This does not happen with containers. Only VM.

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Oh and I did everything in Incus UI. The Incus is initialized with everything default except the remote access part.

The VM/Container’s IP is assigned by DHCP. I guess the IP is not reassigned after the VM is recreated. I did try running dhcpcd and it results in another set of addresses, not replace the existing one. I’m suspecting something with the cloud-init and netplan, but after trying a few thing (includine cloud-init clean, I still can’t manage to get a new IPv4 address.

Incus version is 6.20, the Host OS is Ubuntu 24.04.3 LTS.

PS. I wish I can override the IP address in the GUI somehow.

2

You’ll have to reset systemd machine-id.

If you’re already deploying cloud images, use cloud-init to install additional packages and create/modify users. You’ll have less issues.

2 Likes
3

It works. Thank you!.