[systemd-devel] ?????? ?????? ?????? [systemd-de vel] systemctl can't execute stop actually,whenservice is started by other way

2017-10-27 Thread ???? 
When executing 'service xxx restart', actually systemd will execute 'service 
xxx start', and then 'service xxx stop'.
But my restart action is different from stop action, can I customize my 
'restart'?




--  --
??: "Lennart Poettering"; 
: 2017??10??27??(??) 6:15
??: ""<624001...@qq.com>; 
: "Oliver Neukum"; 
"systemd-devel"; 
????: Re: [systemd-devel] ?? ?????? [systemd-de vel] systemctl can't 
execute stop actually,whenservice is started by other way



On Fr, 27.10.17 17:53,  (624001...@qq.com) wrote:

> Hi, 
> 
> 
> Where is the 'service xxx status' result stored? Or can I change the
> service status manually, when start / stop the service outside of
> systemd.

PID 1 maintains a per-service record in its internal memory. Only
PID 1 itself has write access to it.

Lennart

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Re: [systemd-devel] ?????? ?????? [systemd-de vel] systemctl can't execute stop actually,whenservice is started by other way

2017-10-27 Thread ???? 
Hi, 


Where is the 'service xxx status' result stored? Or can I change the service 
status manually, when start / stop the service outside of systemd.


Thank you.




-- Original --
From: "Lennart Poettering"; 
Date: 2017??6??29??(??) 4:29
To: "Oliver Neukum"; 
Cc: ""<624001...@qq.com>; 
"systemd-devel"; 
Subject: Re: [systemd-devel] ?? ?? [systemd-de vel] systemctl can't 
execute stop actually,whenservice is started by other way



On Thu, 29.06.17 10:05, Oliver Neukum (oneu...@suse.com) wrote:

> Am Mittwoch, den 28.06.2017, 13:29 +0200 schrieb Lennart Poettering:
> > Well, it's a service manager. As such it keeps track of services,
> > knows when they are started and when they aren't. Why would it stop
> > services that aren't started?
> 
> Because you command it to do so.

Because things are technically designed that way. When systemd manages
services it does so ensuring it will get SIGCHLD events for them. it
will also run them in a cgroup, so that it can monitor its lifetime by
enumerating the cgroup's contents, and getting events from it.

Now, if you start stuff outside of systemd nothing of that is
available, so systemd wouldn#t know that is running, and it
couldn't properly stop anything because it can't get ahold of the
processes to terminate.

Lennart

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[systemd-devel] ?????? ?????? [systemd-de vel] systemctl can't execute stop actually,whenservice is started by other way

2017-06-28 Thread ???? 
Why? I think that will be more insured in case the status is not correct.




--  --
??: "Lennart Poettering"; 
: 2017??6??28??(??) 6:48
??: ""<624001...@qq.com>; 
: "systemd-devel"; 
: Re: ?? [systemd-de vel] systemctl can't execute stop 
actually,whenservice is started by other way



On Wed, 28.06.17 16:38,  (624001...@qq.com) wrote:

> Hi Lennart,
> 
> Thank you for your reply.
> 
> Is there a way to execute stop actually, even the status is inactive.

No there is not. system will only allow stopping of services that are
actually started.

Lennart

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