[systemd-devel] At wits end... need to execute a script prior to anything getting killed/changed on reboot/shutdown

[Christopher Cox]

On 1/17/19 2:25 PM, Lennart Poettering wrote:
> On Do, 17.01.19 12:38, Christopher Cox (ccox at endlessnow.com) wrote:
> 
>>>> it defaults to YES and the whole discussions as that changed where about
>>>> nohup'd processes long ago
>>>
>>> Changing it to "no"... I'll let you know if this fixes things or not.
>>>
>>
>> Actually, as it turns out the nohup'd processes are all owned by root, so
>> changing to "no" didn't fix, but it's my understanding that if the setting
>> isn't set root is always excluded anyhow.
> 
> The sessions of root are excluded, which is semantically slightly
> different from processes of root.
> 
>> Out of the 18 processes that are
>> running, my script only sees 6 of them.  Again, it's just doing a "ps -ef"
>> to a file.  All 18 processes exist prior to shutdown and the script shows
>> that if I run  manually.
> 
> Which systemd version is this? Note that on old systemd versions
> systemd-user-sessions.service would go on its own killing spree early
> on. Maybe you have such an old version?

Quite possible.  This is CentOS 7.6 using what it calls "systemd-219-62"