Ubuntu 22.04 Jammy netplan goes missing

Edwin Drood

10/21/23, 9:22 PM

I would like to know if anybody experienced this. I am running the server cli version of Ubuntu 22.04.
After running apt, I see a message saying to run apt autoremove. (I did this) I also got a message about a kernel update and to reboot (I rebooted) Network never came up.

It did not take me long to realize that the iproute2 package and the netplan.io package were both gone. (both the ip and netplan commands were missing)

All interfaces (except lo were gone)

Without IP and Netplan, I had no network connection, so I went to https://packages.ubuntu.com/jammy to download packages in hopes of getting back up and running. To get iproute2_5.15.0-1ubuntu2_amd64.deb I needed to also install:

libbpf0_0.5.0-1_amd64.deb
libcap2-bin_2.44-1build3_amd64.deb
libmnl0_1.0.4-3build2_amd64.deb
libxtables12_1.8.7-1ubuntu5_amd64.deb

Then to install netplan.io_0.104-0ubuntu2_amd64.deb I needed its depencencies:

libc6_2.35-0ubuntu3_amd64.deb
libglib2.0-0_2.72.1-1_amd64.deb
libnetplan0_0.104-0ubuntu2_amd64.deb
python3_3.10.4-0ubuntu2_amd64.deb
python3-netifaces_0.11.0-1build2_amd64.deb
python3-yaml_5.4.1-1ubuntu1_amd64.deb

This actually fixed the networking problem and then I was able to run "apt --fix-broken install" to clean up whatever else happened.

Has anybody heard about this? I have been running Ubuntu servers for long time and have not seen this before.

3068

1 + 3

ubuntu

iproute2

netplan

Ginnungagap

10/21/23, 9:34 PM

Could you share your apt history, this seems exceptionally weird (haven't checked bugs.ubuntu.com yet though).

anx

10/21/23, 9:40 PM

Production machines would usually be installed/upgraded after the first *point release*. Call `lsb_release -a` to confirm that you are running `22.04.1` - if it instead shows as plain `22.04` there is a possibility that your installation was done using upgrade scripts or installation media before those methods were finalized for that release. In that case you might have had an installation that never matched release configuration in the first place.

anx

10/21/23, 9:45 PM

Please [edit] your question to clarify that this is not the result of a third-party dependency mess, e.g. by caling `grep -rh ^[^#] /etc/apt/sources.list /etc/apt/sources.list.d/*` to confirm you are exclusively using the Canonical-administered set of package sources for the codename `jammy` release.

Score:0

Server

anx

10/21/23, 9:35 PM

Usually there is at least one installed software package called metapackage that ships little or no features on its own, but defines dependencies on everything you probably do not want automatically removed.

One way to get to the point you arrived at, is to remove the package ubuntu-minimal. Doing so is rarely advisable - but possible, should you truly have a valid reason to deviate from the system Canonical has designated as the minimal distribution. Install ubuntu-minimal (possibly also ubuntu-server) and have a closer look for other dependencies that are now (re)installed as a result.

The other way I know of is failure during upgrades, but in that case the scripts used to manage those upgrades should - unless interrupted by power failure or running out of disk space - always clearly log & output their progress - and suggest possible mitigation if things go awry.

+ 0

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