Troubleshooting networking issues
=================================
When experimenting with custom networks, with or wihtout netavark, you might
get get into a situation that is hard to diagnose. Before reporting a bug
report, please try resetting your podman configuration using the command:
podman system reset
See https://bugs.debian.org/1066139 for one of such instances.
Troubleshooting rootless mode
=============================
> Error processing tar file(exit status 1): there might not be enough IDs
> available in the namespace (requested 0:42 for /etc/gshadow):
> lchown/etc/gshadow: invalid argument
This probably means that _subuid_ range is not defined in the "/etc/subuid"
file. On up-to-date system subuid/subgid ranges are automatically assigned
when a new user is added (e.g. `adduser {USER}`) but on systems upgraded
from prior Debian releases {USER} created in old environment before upgrade
may not have _subuid_ mapping.
"usermod" command have "--add-subuids" and "--add-subgids" options but it
does not check "/etc/login.defs" for ranges.
An awkward solution may be to add a new temporary user, apply her ranges to
{USER} (in "/etc/subuid" and in "/etc/subgid") then remove a temporary user
(e.g. `deluser --remove-home {USER}`).
The following command show the subuids and subgids of the current user:
grep $USER /etc/s*id
Configuration
=============
Podman configuration files are in "/etc/containers".
Please review "/etc/containers/policy.json" (provided by package "buildah")
and check the corresponding man page for details:
containers-policy.json(5)
-- Reinhard Tartler <siretart@tauware.de>, Sun, 28 Jan 2024 07:38:28 -0500
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