[systemd-devel] systemctl isolate disconnects network

[Mantas Mikulėnas]

On Mon, Feb 1, 2016 at 6:28 PM, Justin Garrison <justinleegarrison at gmail.com
> wrote:

> /bin/kill -RTMIN+22 1
>> systemctl islolate ...
>> journalctl -b
>
>
> -RTMIN+22 doesn't appear to be a valid kill flag and I couldn't find
> documentation on which flags do what for systemd
>

The signals are documented in `man systemd`.

Not all `kill` implementations support all realtime signal names; note that
/bin/kill is different from bash's built-in `kill` (the former recognizes
"RTMIN+" as a generic prefix, the latter only has a static list of names so
you need RTMAX-8 instead).


> I tried -RTMIN+2 and the system hung and told me it was going to shut down
> but didn't. I switched ttys and tried to isolate multi-user again and
> interestingly enough network didn't die this time. This is all I see in the
> journal.
>
> Feb 01 08:22:32 systemd[1]: Started /etc/rc.d/rc.local Compatibility.
> Feb 01 08:22:32 systemd[1]: Starting Wait for Plymouth Boot Screen to
> Quit...
> Feb 01 08:22:32 systemd[1]: Starting Terminate Plymouth Boot Screen...
> Feb 01 08:22:32 systemd[1]: Received SIGRTMIN+21 from PID 11533
> (plymouthd).
> Feb 01 08:22:32 systemd[1]: Started Terminate Plymouth Boot Screen.
> Feb 01 08:22:32 systemd[1]: Started Wait for Plymouth Boot Screen to Quit.
> Feb 01 08:22:32 systemd[1]: Started Getty on tty1.
> Feb 01 08:22:32 systemd[1]: Starting Getty on tty1...
> Feb 01 08:22:32 systemd[1]: Reached target Login Prompts.
> Feb 01 08:22:32 systemd[1]: Starting Login Prompts.
> Feb 01 08:22:32 systemd[1]: Reached target Multi-User System.
> Feb 01 08:22:32 systemd[1]: Starting Multi-User System.
>
> --
> Justin Garrison
> justingarrison.com
>
>
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>
>


-- 
Mantas Mikulėnas <grawity at gmail.com>
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