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docs: improve autoupdater explanation

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Ruben Barkow 2016-10-20 08:59:39 +02:00 committed by Matthias Schiffer
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docs/features/autoupdater.rst
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@ -11,14 +11,19 @@ during development), but it can be enabled by setting the variable GLUON_BRANCH
to override the default branch set in the set in the site configuration.
A manifest file for the updater can be generated with `make manifest`. A signing script (using
ecdsautils) can by found in the `contrib` directory. When creating the manifest, ``GLUON_PRIORITY`` can
be set on the command line, or it can be taken from the ``site.mk``.
``ecdsautils``) can by found in the `contrib` directory. When creating the manifest, the
``PRIORITY`` value may be defined by setting ``GLUON_PRIORITY`` on the command line or in ``site.mk``.
The priority defines the maximum number of days that may pass between releasing an update and installation
of the images. The update probability will start at 0 after the release time mentioned in the manifest
and then slowly rise to 1 up to the point when the number of days given by the priority has passed.
``GLUON_PRIORITY`` defines the maximum number of days that may pass between releasing an update and installation
of the images. The update probability will start at 0 after the release time declared in the manifest file
by the variable DATE and then slowly rise up to 1 when ``GLUON_PRIORITY`` days have passed. The autoupdater checks
for updates hourly (at a random minute of the hour), but usually only updates during its run between
4am and 5am, except when the whole ``GLUON_PRIORITY`` days and another 24 hours have passed.
The priority may be an integer or a decimal fraction.
``GLUON_PRIORITY`` may be an integer or a decimal fraction.
Automated nightly builds
------------------------
A fully automated nightly build could use the following commands:
@ -71,11 +76,9 @@ These commands can be used on a node:
# Force update check, even when the updater is disabled
autoupdater -f
::
# If fallback is true the updater will perform an update only if
# the timespan given by the priority and another 24h have passed
# If fallback is true the updater will perform an update only if the timespan
# PRIORITY days (as defined in the manifest) and another 24h have passed
autoupdater --fallback