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docs(rootless): setuptool needs a pam_systemd session #25874

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docs(rootless): setuptool needs a pam_systemd session #25874

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6 changes: 6 additions & 0 deletions content/manuals/engine/security/rootless/_index.md
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Expand Up @@ -91,6 +91,12 @@ export PATH=/usr/bin:$PATH
export DOCKER_HOST=unix:///run/user/1000/docker.sock
```

Run the installer from a real login session (`ssh` as yourself, or
`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).

If `dockerd-rootless-setuptool.sh` is not present, you may need to install the `docker-ce-rootless-extras` package manually, e.g.,

```console
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13 changes: 13 additions & 0 deletions content/manuals/engine/security/rootless/troubleshoot.md
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Expand Up @@ -110,6 +110,19 @@
```
Where `myuser@` is your desired username and @ signifies this machine.

The same "systemd not detected" message appears when `$XDG_RUNTIME_DIR` is
missing or is a fallback such as `~/.docker/run`. On a systemd host it must
be `/run/user/$(id -u)` so `systemctl --user` can reach the session bus.
Setting `XDG_RUNTIME_DIR` to the path printed by a failed install does not
fix that. Log in with `pam_systemd` first (`ssh`, graphical console, or

Check warning on line 117 in content/manuals/engine/security/rootless/troubleshoot.md

View workflow job for this annotation

GitHub Actions / validate (vale) 

[vale] reported by reviewdog 🐶
[Docker.RecommendedWords] Consider using 'sign in' instead of 'Log in'

Raw Output:
{"message": "[Docker.RecommendedWords] Consider using 'sign in' instead of 'Log in'", "location": {"path": "content/manuals/engine/security/rootless/troubleshoot.md", "range": {"start": {"line": 117, "column": 11}}}, "severity": "INFO"}
`machinectl shell`), then check:

```console
$ echo $XDG_RUNTIME_DIR
/run/user/1000
$ systemctl --user status
```

### Errors when starting the Docker daemon

**\[rootlesskit:parent\] error: failed to start the child: fork/exec /proc/self/exe: operation not permitted**
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