Lost of the policy.json and registries.conf file after reinstall podman

[Alan Moore]

In oracular, fresh install of podman provides `libpod.conf networks/ policy.json registries.conf registries.conf.d/ systemd/` under /etc/containers/
But if you remove the podman with `sudo apt purge podna && sudo apt autoremove` (with container folder removed) then reinstall the podman back, it now only has `libpod.conf networks/ registries.conf.d/ systemd/` which causes problem to resolve the short name

ProblemType: Bug
DistroRelease: Ubuntu 24.10
Package: podman 5.0.3+ds1-5ubuntu1
ProcVersionSignature: Ubuntu 6.11.0-9.9-generic 6.11.0
Uname: Linux 6.11.0-9-generic x86_64
ApportVersion: 2.30.0-0ubuntu4
Architecture: amd64
CasperMD5CheckMismatches: ./casper/initrd
CasperMD5CheckResult: fail
CurrentDesktop: ubuntu:GNOME
Date: Mon Oct 28 18:01:13 2024
InstallationDate: Installed on 2024-09-29 (29 days ago)
InstallationMedia: Ubuntu 24.10 "Oracular Oriole" - Beta amd64 (20240919)
ProcEnviron:
 LANG=en_US.UTF-8
 PATH=(custom, no user)
 SHELL=/bin/bash
 TERM=xterm-256color
 XDG_RUNTIME_DIR=<set>
SourcePackage: libpod
UpgradeStatus: No upgrade log present (probably fresh install)

[Alan Moore (wqian)]

Solution:

sudo apt purge golang-github-containers*

then rm the conffile

sudo rm -r /etc/containers

sudo apt install podman

Creata and edit the file /etc/subuid and /etc/subgid ( replace the username with current user) :

/etc/subuid

username:100000:65536

/etc/subgid

username:100000:65536

The run `podman system migrate`

[Seth Arnold (seth-arnold)]

My guess is: sudo apt purge podna && sudo apt autoremove

'autoremove' won't *purge* packages, it just uninstalls packages. That invokes dpkg's machinery to track "conffiles" (or is it "config files"? I can't remember.) If dpkg sees that an admin has removed a conffile then it will not install that conffile again when the package is reinstalled later: the admin wanted it gone, so it is gone.

This may be the better path forward than comment #2:

sudo apt-get --yes reinstall -o Dpkg::Options::="--force-confnew" -o Dpkg::Options::="--force-confmiss podman # or whatever package name

I prefer purging packages vs uninstalling packages: I only ever use apt autoremove to clean up after old kernels, which mostly doesn't have this problem.)