Re: Announce: script to automatically restart services after update of dependencies
On Thu, Jun 21, 2012 at 11:16:51AM +0200, Goswin von Brederlow wrote:
> Ben Hutchings <firstname.lastname@example.org> writes:
> > On Tue, 2012-06-19 at 15:29 +0300, Eugene V. Lyubimkin wrote:
> >> Hello,
> >> On 2012-06-19 13:59, Tomas Pospisek wrote:
> >> > This implies that an "apt-get install library" needs to trigger that
> >> > restart.
> >> > Which means that apt-get needs to depend on restart-services. So either
> >> > restart-services and checkrestart should go into the apt package, or apt
> >> > needs
> >> > to depend on/recommend debian-goodies, which would currently pull in
> >> > python,
> >> > perl, curl, dialog and their respective dependencies.
> >> >
> >> > The later may be a technically working solution, but from a conceptual and
> >> > a
> >> > KISS point of view doesn't make sense to me.
> >> >
> >> > Is my conclusion correct so far?
> >> >
> >> > So if we want a "clean" solution, then checkrestart/restart-services would
> >> > need
> >> > to move into apt and get rid of the non-essential dependencies (get
> >> > rewritten in
> >> > shell or C).
> >> I believe this is a wrong layer for proposed functionality -- apt-get
> >> (libapt) is not the only high-level package manager for Debian.
> >> If I were you, I'd look into dpkg file triggers instead. Triggers will
> >> by the way automatically solve the problem that you don't restart
> >> a service 5 times if 5 libraries were upgraded.
> > But we still need one trigger per service? I don't think that's a good
> > idea.
> > Ben.
> Do you? Why not a trigger that calls checkrestart?
I was thinking we would need a file trigger per service, which is
activated automatically (requires changing all service packages);
or an explicit trigger, which is activated by each library postinst
(requires changing all library packages).
Are you suggesting a file trigger on /lib and /usr/lib? It seems
inefficient as I think the triggered postinst would have to check
*all* libraries, but I suppose it would work. And presumably this is
no worse than what checkrestart does now.
We get into the habit of living before acquiring the habit of thinking.
- Albert Camus