docs(rootless): setuptool needs a pam_systemd session - #25874
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Signed-off-by: Dean Chen <862469039@qq.com>
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AkihiroSuda
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Sep 8, 2026
| `machinectl shell $USER@`). `$XDG_RUNTIME_DIR` must be `/run/user/$(id -u)`. | ||
| If it is empty or something like `~/.docker/run`, the script cannot see | ||
| systemd and tells you to start `dockerd-rootless.sh` by hand. See | ||
| [Troubleshooting](./troubleshoot.md#unable-to-install-with-systemd-when-systemd-is-present-on-the-system). |
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This is lengthy and decreases readability.
"The installer will fail if $XDG_RUNTIME_DIR is not set. See Troubleshooting.` should be enough.
AkihiroSuda
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Sep 8, 2026
| Where `myuser@` is your desired username and @ signifies this machine. | ||
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| The same "systemd not detected" message appears when `$XDG_RUNTIME_DIR` is | ||
| missing or is a fallback such as `~/.docker/run`. On a systemd host it must |
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"The same" is misleading, as "when $XDG_RUNTIME_DIR is
missing" typically happens when sudo is used
AkihiroSuda
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Sep 8, 2026
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We already have helpful error messages in https://github.com/moby/moby/blob/e0c1583c7891b34bd199fdf9e02fb7c7b65bb1ca/contrib/dockerd-rootless-setuptool.sh#L97-L109
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If you
sudo suin and$XDG_RUNTIME_DIRis empty (or the~/.docker/runfallback the script prints), it says systemd isn't there even on a systemd box.systemctl --userneeds/run/user/$UID.Called that out on the install page and in the existing troubleshoot section.
@netlify /engine/security/rootless/
Fixes #14491