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[CI:DOCS] troubleshooting: mention machinectl and systemd-run 

Signed-off-by: Erik Sjölund <erik.sjolund@gmail.com>
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Erik Sjölund 2022-02-18 06:59:27 +01:00
parent a88ea2c68b
commit 8c9d37fafc
1 changed files with 17 additions and 2 deletions
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19
troubleshooting.md
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@ -903,10 +903,25 @@ Error: error creating tmpdir: mkdir /run/user/1000: permission denied
Podman expects a valid login session for the `rootless+cgroupv2` use-case. Podman execution is expected to fail if the login session is not present. In most cases, podman will figure out a solution on its own but if `XDG_RUNTIME_DIR` is pointing to a path that is not writable execution will most fail. Typical scenarious of such cases are seen when users are trying to use Podman with `su - <user> -c '<podman-command>`, or `sudo -l` and badly configured systemd session.
Resolution steps
Alternatives:
* Execute Podman via __systemd-run__ that will first start a systemd login session:
```
sudo systemd-run --machine=username@ --quiet --user --collect --pipe --wait podman run --rm docker.io/library/alpine echo hello
```
* Start an interactive shell in a systemd login session with the command `machinectl shell <username>@`
and then run Podman
```
$ sudo -i
# machinectl shell username@
Connected to the local host. Press ^] three times within 1s to exit session.
$ podman run --rm docker.io/library/alpine echo hello
```
* Start a new systemd login session by logging in with `ssh` i.e. `ssh <username>@localhost` and then run Podman.
* Before invoking Podman command create a valid login session for your rootless user using `loginctl enable-linger <username>`
* If `loginctl` is unavailable you can also try logging in via `ssh` i.e `ssh <username>@localhost`.
### 31) 127.0.0.1:7777 port already bound