[CRIU] Configuration directory /etc/criu.d

[Adrian Reber]

On Fri, Aug 05, 2016 at 09:19:13PM +0300, Pavel Emelyanov wrote:
> On 08/05/2016 07:50 PM, Dmitry Safonov wrote:
> > 2016-08-05 19:02 GMT+03:00 Adrian Reber <areber at redhat.com>:
> >>
> >> Having added the skip in-flight TCP connections option to TCP I thought
> >> something else is needed to influence CRIU's behavior. Every tool using
> >> CRIU (docker, lxc, runc, ...) hardcodes the required options into the
> >> source code and every change to CRIU requires a change in all tools.
> >>
> >> Therefore I thought it would be nice to have something like
> >>
> >> /etc/criu.d/ or ~/.criu.d/
> >>
> >> where CRIU would look for .conf files which can enable or disable
> >> options for all CRIU invocations.
> >>
> >> Staying at my skip in-flight TCP connections example I could just add a
> >> file to /etc/criu.d which always enables --skip-in-flight for CRIU
> >> invocations on that system. There should then also be a way to disable
> >> options from hardcoded CRIU invocations in higher tools like docker and
> >> lxc. I would also expect an option to ignore files in /etc/criu.d.
> >>
> >> https://github.com/xemul/criu/issues/194 is good example where it could
> >> also help.
> >>
> >> Is this something which would be useful to CRIU? Any other opinions?
> > 
> > In my point of view -- it's a nice idea.
> > I'm not a huge fan of scripts like that are being used in Virtuozzo
> > distributions
> > for suspending/resuming containers.
> > If we could like substitute scripts like that:
> > https://github.com/OpenVZ/libvzctl/blob/master/scripts/vz-cpt.in
> 
> I doubt we would be able to fix _all_ of this with /etc/criu.conf, but
> having a file with criu opts _defaults_ sounds like a good idea indeed :)
> 
> By the way...
> 
> Does anybody have examples of config files in /etc for CLI tools (!), not
> daemons/services or system startup configurations?

wget, curl, mutt

All of them have config files in /etc

		Adrian