Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.debian.user > #229959

Re: "Service restarts being deferred"

Show all headers | View raw

On Wed 23 Dec 2020 at 20:31:09 (+0200), Andrei POPESCU wrote:
> On Mi, 23 dec 20, 18:28:43, Jesper Dybdal wrote:
> > 
> > If a server is truly unattended, then it needs unattended-upgrades to
> > somehow manage to restart services that it has upgraded.
> > And if there are good reasons why these specific services cannot simply be
> > restarted directly by unattended-upgrades without a reboot (as the bug
> > reports referenced above indicate), then it would seem natural to me to use
> > the existing mechanism to get a reboot done after upgrading.  That mechanism
> > works fine after for instance a kernel upgrade.
> > 
> > Requiring manual intervention to restart an upgraded service would defeat
> > the purpose of unattended-upgrades.
> > 
> > > But I would also ask how the system is to determine a scheduled time
> > > or occasion to restart services/reboot the system. What criteria, as
> > > sysadmin, do you currently use to make those decisions for yourself?
> > 
> > The existing mechanism used after kernel upgrades does it just fine.
> 
> I'm guessing when the mechanism was designed it didn't even consider the 
> possibility of services that can't be safely restarted, so it's limited 
> to the kernel.

Wich mechanism? I'm now not sure that the OP picked up on
Kushal Kumaran's pointing out the abilities of needrestart.

> It's probably possible to extend unattended-upgrades to consider 
> services in addition to kernel upgrades, (with some sort of 
> include/exclude mechanism) though this needs to be programed.
> 
> You could start by filing a (wishlist) bug.

I think you would be reinventing needrestart. I get the impression¹
that unattended-upgrades does the business of downloading and
installing updates, with configuration limited to (roughly) when,
circumstances (eg AC power), autoremoving and rebooting.

OTOH needrestart has fine-grained configuration at the level of
individual services, and can list or restart them (automatically
or interactively), and it provides hooks for any other sort of
decision-making exercise, hence my question above about the
OP's criteria.

One might assume that even a "truly unattended" system is sending
some sort of notification to a sysadmin somewhere, and so that too
is configurable in needrestart.

¹ I don't use unattended-upgrades myself, but just a cron job to
  download potential candidates and notify me.

Cheers,
David.

Back to linux.debian.user | Previous | Next — Previous in thread | Find similar | Unroll thread

Thread

"Service restarts being deferred" Jesper Dybdal <jd-debian-user@dybdal.dk> - 2020-12-19 16:40 +0100
  Re: "Service restarts being deferred" Dan Ritter <dsr@randomstring.org> - 2020-12-19 17:20 +0100
    Re: "Service restarts being deferred" Jesper Dybdal <jd-debian-user@dybdal.dk> - 2020-12-19 18:40 +0100
      Re: "Service restarts being deferred" Kushal Kumaran <kushal@locationd.net> - 2020-12-19 21:10 +0100
        Re: "Service restarts being deferred" Jesper Dybdal <jd-debian-user@dybdal.dk> - 2020-12-20 17:10 +0100
          Re: "Service restarts being deferred" David Wright <deblis@lionunicorn.co.uk> - 2020-12-22 15:40 +0100
            Re: "Service restarts being deferred" Jesper Dybdal <jd-debian-user@dybdal.dk> - 2020-12-23 18:30 +0100
              Re: "Service restarts being deferred" Andrei POPESCU <andreimpopescu@gmail.com> - 2020-12-23 19:40 +0100
                Re: "Service restarts being deferred" David Wright <deblis@lionunicorn.co.uk> - 2020-12-24 02:30 +0100

csiph-web