0762fcb0b5
When the os-collect-config process is started on multiple systems at the same time, the polling intervals can line up to cause performance problems against the configuration source. To reduce the impact, this change adds a splay option to allow the operator to configure a random delay prior to the polling to attempt to offset the polling syncronization. Change-Id: I1a8be3345d783da9014eca7ea26da19d57e767c0 Closes-Bug: #1677314 |
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os_collect_config | ||
tools | ||
.coveragerc | ||
.gitignore | ||
.gitreview | ||
.testr.conf | ||
LICENSE | ||
MANIFEST.in | ||
os-collect-config-and-friends.odg | ||
os-collect-config-and-friends.svg | ||
README.rst | ||
requirements.txt | ||
setup.cfg | ||
setup.py | ||
test-requirements.txt | ||
tox.ini |
Team and repository tags
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.
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.
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.↩︎