[lxc-users] Graceful Shutdown/Reboot

[Brett 11]

On Thu, 2017-02-09 at 11:32 +0300, Marat Khalili wrote:
> You are right, I was jumping to conclusions about "all sane 
> distributions". Did you verify that lxc-stop shuts your container 
> correctly? Because according to my quick google search they actually 
> recommend to specify different signal in lxc.haltsignal for containers 
> that don't understand SIGPWR from LXC.
> 
> 
> --
> 
> With Best Regards,
> Marat Khalili
> 
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Thanks Marat! This is definitely interesting. I found a bug report http
s://bugs.debian.org/cgi-bin/bugreport.cgi?bug=831691 that says the
haltsignal has been changed to default as SIGRTMIN+3. However the chain
of action to halt a container is pretty convoluted and this doesn't
appear changed on my up to date Debian Stretch.

I do see 'lxc-stop' being executed when I 'systemctl stop lxc at NAME.serv
ice' but your suggestion that 'lxc-stop' doesn't cleanly/gracefully
shutdown/halt containers leaves me worried.

I guess for now I am going to try to replace SIGPWR in my container
'.service' file with the recommended SIGRTMIN+3. Do you think this
would be a proper solution? And thanks again for bringing this to my
attention.

Brett