When I run podman I get,

$ podman info
cannot clone: Operation not permitted
user namespaces are not enabled in /proc/sys/kernel/unprivileged_userns_clone
Error: cannot re-exec process

How can I enable user namespaces and have them persist after reboot? I am using Debian.

1 Answer 1


You can enable user namespaces like this,

sysctl -w kernel.unprivileged_userns_clone=1

And you can have it persist after reboot in Debian by running this,

echo "kernel.unprivileged_userns_clone=1" >> /etc/sysctl.conf
  • Any idea, how do we get this fixed with Redhat 8.4? podman version 3.4.2 podman ps -a Error: cannot re-exec process podman info Error: cannot re-exec process Mar 7, 2022 at 11:41

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