>> 4. Which signal?  SIGINT?  SIGPWR?  Both?
>
>Does only work for init based systems, not for upstart, like Ubuntu!

Dear Derek,

Sending a SIGINT to init will invoke the alsctrldel entry of the  /etc/inittab  
. A SIGPWR will (in absence of /etc/powerfail) call the powerfail entry. In a 
common setup, sending SIGINT will cause a reboot and SIGPWR will halt the 
client system.  In my Gentoo environment, I'm currently using

        <container>/etc/inittab

        [...]
        ca:12345:ctrlaltdel:/sbin/shutdown -r now
        pf:12345:powerwait:/sbin/halt
        [...]


But I'm still using the so-called baselayout-1. Some time ago Gentoo have 
shifted to baselayout-2, which use openRC. To my knowledge, it's init don't 
respect this signals, too. Because of that, I decide to wait until the 
lxc-attach functionality is stable.

greetings

Guido

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