openstack
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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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Marios Andreou a0322979f9 Remove tripleo-multinode-container-minimal from layout + fix test 
The tripleo-multinode-container-minimal is being deprecated [1]
as part of wider tripleo CI optimization at [2].

This updates test-requirements to fix issue seen in [3] and also
fixes a failing pep8 test seen after test-requirements was fixed.

[1] Ie6473759383bd4b903cbe56fba9fee75a24154c4
[2] https://review.opendev.org/q/topic:tripleo-ci-reduce
[3] https://a28720641abd1053931d-69746c322fe5e3cf8e2976f654b96d92.ssl.cf5.rackcdn.com/777098/1/check/openstack-tox-py38/9e6a3c0/tox/py38-1.log

Change-Id: I6df7ef9eacc25435e797005ad8f764c3e0913d46
 		2021-02-25 18:41:49 +02:00
os_refresh_config Remove tripleo-multinode-container-minimal from layout + fix test 2021-02-25 18:41:49 +02:00
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 Remove tripleo-multinode-container-minimal from layout + fix test 2021-02-25 18:41:49 +02:00
.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 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 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 Remove tripleo-multinode-container-minimal from layout + fix test 2021-02-25 18:41:49 +02:00
tox.ini Replace deprecated UPPER_CONSTRAINTS_FILE variable 2020-11-09 19:15:48 +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.