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services: unattended-upgrade: Rewrite as a Shepherd timer.

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This is a semi-incompatible change: gexps previously provided in the
‘schedule’ field will no longer work.

* gnu/services/admin.scm (unattended-upgrade-mcron-jobs): Rename to…
(unattended-upgrade-shepherd-services): … this.  Return a list of one
Shepherd service.  Remove custom logging and time limitation facilities
from ‘code’.
(unattended-upgrade-service-type): Extend ‘shepherd-root-service-type’
instead of ‘mcron-service-type’.
(<unattended-upgrade-configuration>)[services-to-restart]: Change
default.
* doc/guix.texi (Unattended Upgrades): Adjust ‘schedule’ and
‘services-to-restart’ documentation.

Change-Id: I1b239c5946e71cf9e2af9b24fe4b01366b57fb7a
This commit is contained in:
Ludovic Courtès
2024-12-11 22:59:17 +01:00
parent 100c1e1adf
commit 48083c8c95
2 changed files with 45 additions and 37 deletions
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13
doc/guix.texi
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@@ -23472,9 +23472,9 @@ service. The following fields are available:
@table @asis
@item @code{schedule} (default: @code{"30 01 * * 0"})
This is the schedule of upgrades, expressed as a gexp containing an
mcron job schedule (@pxref{Guile Syntax, mcron job specifications,,
mcron, GNU@tie{}mcron}).
This is the schedule of upgrades, expressed as a string in traditional
cron syntax or as a gexp evaluating to a Shepherd calendar event
(@pxref{Timers,,, shepherd, The GNU Shepherd Manual}).
@item @code{channels} (default: @code{#~%default-channels})
This gexp specifies the channels to use for the upgrade
@@ -23523,7 +23523,7 @@ When @code{reboot?} is @code{#t}, services are not restarted before
rebooting. This means that the value for @code{services-to-restart} is
ignored. The updated services will be started after the system reboots.
@item @code{services-to-restart} (default: @code{'(mcron)})
@item @code{services-to-restart} (default: @code{'(unattended-upgrade)})
This field specifies the Shepherd services to restart when the upgrade
completes.
@@ -23538,8 +23538,9 @@ Use @command{herd status} to find out candidates for restarting.
@xref{Services}, for general information about services. Common
services to restart would include @code{ntpd} and @code{ssh-daemon}.
By default, the @code{mcron} service is restarted. This ensures that
the latest version of the unattended upgrade job will be used next time.
By default, the @code{unattended-upgrade} service is restarted. This
ensures that the latest version of the unattended upgrade job will be
used next time.
@item @code{system-expiration} (default: @code{(* 3 30 24 3600)})
This is the expiration time in seconds for system generations. System