No /etc/subuid or /etc/subgid files

[geodic]

I want to run rootless podman but, on the podman docs it says it needs the /etc/sub{uid, gid} files. But I can’t find a package that provides these files. Any help will be appreciated.

[Strit]

Try this:

https://wiki.archlinux.org/title/Podman#Rootless_Podman

Set subuid and subgid

In order for users to run rootless Podman, a subuid(5) and subgid(5) must be set for each user that wants to use it. These information must, ultimately, be stored in /etc/subuid and /etc/subgid which lists the UIDs for their user namespace.

/etc/subuid and /etc/subgid do not exist by default. If they do not exist yet in your system, create them by running:

# touch /etc/subuid /etc/subgid

Note: The above command is required, because the usermod used below do not create them.

The following command enables the username user and group to run Podman containers (or other types of containers in that case). It allocates a given range of UIDs and GIDs to the given user and group.

# usermod --add-subuids 100000-165535 --add-subgids 100000-165535 *username*

Tip: Instead of using usermod command, this could be achieved either by editing /etc/subuid and /etc/subgid directly.

Now, you should have the following content (replacing username with the given username):

/etc/subuid

username:100000:65536

/etc/subgid

username:100000:65536

[geodic]

Nope, that didn’t work. podman pull resulted in this:

d19f32bd9e41: Download complete
writing blob: adding layer with blob "sha256:d19f32bd9e4106d487f1a703fc2f09c8edadd92db4405d477978e8e466ab290d": Error processing tar file(exit status 1): potentially insufficient UIDs or GIDs available in user namespace (requested 0:42 for /etc/gshadow): Check /etc/subuid and /etc/subgid if configured locally and run podman-system-migrate: lchown /etc/gshadow: invalid argument

[Strit]

Did you also do the migrate step in the Wiki?

$ podman system migrate

[geodic]

Okay, thanks that worked.