gistfile1.txt

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 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 changes, 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/run/os-collect-config/ec2.json:/var/run/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

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.