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os-refresh-config
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Restart services and coordinate data migration on Heat config changes.
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OpenStack Release Bot 2790bcc985 Update TOX_CONSTRAINTS_FILE for stable/ussuri 
Update the URL to the upper-constraints file to point to the redirect
rule on releases.openstack.org so that anyone working on this branch
will switch to the correct upper-constraints list automatically when
the requirements repository branches.

Until the requirements repository has as stable/ussuri branch, tests will
continue to use the upper-constraints list on master.

Change-Id: Ia7a41e14fa2fa29a54d517c024740edeb48e9adb
 		2021-03-11 18:08:34 +00:00
os_refresh_config Use unittest.mock instead of third party mock 2020-03-13 19:48:55 +00:00
releasenotes/notes Stop testing python2.7 2020-03-13 14:47:47 -05:00
tests Initial commit 2013-02-06 16:59:40 -08:00
zuul.d Stop testing python2.7 2020-03-13 14:47:47 -05:00
.coveragerc Change ignore-errors to ignore_errors 2015-09-21 14:41:56 +00:00
.gitignore Switch to stestr 2018-07-10 18:41:32 +07:00
.gitreview Update .gitreview for stable/ussuri 2021-03-11 18:08:31 +00:00
.stestr.conf Switch to stestr 2018-07-10 18:41:32 +07:00
LICENSE Adding setup.py to make for an easier installation 2013-02-12 07:04:28 -08:00
README.rst Update links in README 2018-03-02 18:05:11 +08:00
requirements.txt Updated from global requirements 2017-09-27 17:18:26 +00:00
setup.cfg Cleanup py27 support 2020-04-05 10:16:09 +02:00
setup.py Cleanup py27 support 2020-04-05 10:16:09 +02:00
test-requirements.txt Cleanup py27 support 2020-04-05 10:16:09 +02:00
tox.ini Update TOX_CONSTRAINTS_FILE for stable/ussuri 2021-03-11 18:08:34 +00:00

README.rst

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os-refresh-config

os-refresh-config uses dib-run-parts to run scripts in a pre-defined set of directories:

/opt/stack/os-config-refresh/pre-configure.d
/opt/stack/os-config-refresh/configure.d
/opt/stack/os-config-refresh/post-configure.d
/opt/stack/os-config-refresh/migration.d
/opt/stack/os-config-refresh/error.d

/opt/stack/os-config-refresh is the default base directory. You can set OS_REFRESH_CONFIG_BASE_DIR environment variable to override the default one.

Its intended purpose is to separate scripts execution into 4 phases:

  1. Quiesce(pre-configure.d),
  2. Configure(configure.d),
  3. Activate(post-configure.d).
  4. Migrate(migration.d),

It runs through all the phases above to ensure configuration is applied and enabled on a machine. It will run the scripts in error.d and then exit with a non-zero exit status if any phase has a problem. The scripts in each phase should not depend on each other having worked properly.

Note: Earlier versions of os-refresh-config ran migration before post-configure. This was an oversight in the initial design, as migrations are intended to be online migrations after the host is fully configured.

For things which must happen while the service is quiesced, that should be done in the post-configure scripts which control the service state.