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os-collect-config
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Collect and cache metadata, run hooks on changes.
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Tony Breeds ec8b2576da Update to a newer hacking library 
The older hacking library has a cap on pbr <2.0, with the recent 2.0.0
release of PBR it's causing failures in the pep8 job.

hacking isn't kept in sync via the typical proposal-bot updates.

Do it manually to clear the gate issue.

pep8 runtests: commands[0] | flake8
./os_collect_config/merger.py:45:22: W292 no newline at end of file
    return final_list

Change-Id: If863d2e190a4e1701ebf1fcb99a783075cda2556
Related-Bug: #1668848
 		6 years ago
os_collect_config Update to a newer hacking library 6 years ago
.coveragerc Change ignore-errors to ignore_errors 8 years ago
.gitignore Modify gitignore to ignore cover 9 years ago
.gitreview Update stackforge references to openstack 10 years ago
.testr.conf Remove env vars we don't use. 10 years ago
LICENSE Aligned tests with OpenStack standards. 10 years ago
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README.rst Show team and repo badges on README 7 years ago
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requirements.txt Updated from global requirements 7 years ago
setup.cfg Revert "Support building wheels (PEP-427)" 10 years ago
setup.py Updated from global requirements 8 years ago
test-requirements.txt Update to a newer hacking library 6 years ago
tox.ini Delete H803 from ignore list 6 years ago

README.rst

Team and repository tags

image

os-collect-config

Collect configuration from cloud metadata sources

What does it do?

It collects data from defined configuration sources and runs a defined hook whenever the metadata has been changed.

image

1

Usage

You must define what sources to collect configuration data from in /etc/os-collect-config.conf.

The format of this file is:

[default]
command=os-refresh-config

[cfn]
metadata_url=http://192.0.2.99:8000/v1/
access_key_id = ABCDEFGHIJLMNOP01234567890
secret_access_key = 01234567890ABCDEFGHIJKLMNOP
path = MyResource
stack_name = my.stack

These sources will be polled and whenever any of them is changed, default.command will be run. A file will be written to the cache dir, os_config_files.json, which will be a json list of the file paths to the current copy of each metadata source. This list will also be set as a colon separated list in the environment variable OS_CONFIG_FILES for the command that is run. So in the example above, os-refresh-config would be executed with something like this in OS_CONFIG_FILES:

/var/lib/os-collect-config/ec2.json:/var/lib/os-collect-config/cfn.json

The previous version of the metadata from a source (if available) is present at $FILENAME.last.

When run without a command, the metadata sources are printed as a json document.

Quick Start

Install:

sudo pip install -U git+git://git.openstack.org/openstack/os-collect-config.git

Run it on an OpenStack instance with access to ec2 metadata:

os-collect-config

That should print out a json representation of the entire ec2 metadata tree.

  1. Recommend using LibreOffice draw to edit os-collect-config-and-friends.odg and regenerate the svg file. Alternatively edit the svg directly, but remove the .odg file if that is done.↩︎