openstack/os-refresh-config
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Restart services and coordinate data migration on Heat config changes.
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Now that we no longer support py27, we can use the standard library
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Change-Id: I7a6bea2e6e6fffcc262dd4241a7d6b75913d87aa
Signed-off-by: Sean McGinnis <sean.mcginnis@gmail.com>
2020-03-13 19:48:55 +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
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.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 OpenDev Migration Patch 2019-04-19 19:36:18 +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 Stop testing python2.7 2020-03-13 14:47:47 -05:00
setup.py Updated from global requirements 2017-03-06 01:16:55 +00:00
test-requirements.txt Use unittest.mock instead of third party mock 2020-03-13 19:48:55 +00:00
tox.ini Stop testing python2.7 2020-03-13 14:47:47 -05:00

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.