Microk8s snap fails to install on upgraded Ubuntu 20.10 machine

Hi,

Install of the snap fails on a 20.10 (prerelease) amd64 machine, recently upgraded from 20.04:

https://paste.ubuntu.com/p/CwjrxxqJyj/

Since the snap fails to install, there’s unfortunately no way to run microk8s inspect.

This is a ZFS system, in case that makes a difference.

Here’s a full dump of what journalctl sees during the install - note that while I usually run UFW, it’s disabled for the course of this attempted install, to rule out firewall issues[1]:

https://paste.ubuntu.com/p/yzSQP9V2nR/

[1] That said, the 20.04 -> 20.10 upgrade does switch the system from legacy iptables to nftables, and I notice the install process does insert (legacy) FORWARD rules…

[barryprice]

So this doesn’t appear to be an nftables issue after all. I think the next useful step should probably be to set up another 20.10 VM with a ZFS root, and see whether it installs correctly there - and then repeat in 20.04 VMs upgraded to 20.10.

I’ve set up a 20.10 VM by manually installing from the daily 20.10 Desktop image and selecting the ZFS root option during install, then upgrading all packages, and then running snap install microk8s --classic. But that seems to work fine with no errors.

So this must be something to do with my having upgraded from 20.04, I’ll continue trying to work on steps to reproduce in a VM.

[balchua]

@ktsakalozos i saw that the PR to load the cni later has been merged to the master, will the latest/edge have an arm version?

@desrod i am checking with the canonical team whether the arm version is ready.