54caf3c5d5
* [GCE] Caching support for inventory script. The GCE inventory script now supports reading from a cache rather than making the request each time. The format of the list and host output have not changed. On script execution, the cache is checked to see if it older than 'cache_max_age', and if so, it is rebuilt (it can also be explicity rebuilt). To support this functionality, the following have been added. * Config file (gce.ini) changes: A new 'cache' section has been added to the config file, with 'cache_path' and 'cache_max_age' options to allow for configuration. There are intelligent defaults in place if that section and options are not found in the configuration file. * Command line argument: A new --refresh-cache argument has been added to force the cache to be rebuild. * A CloudInventoryCache class, contained in the same file has been added. As a seperate class, it allowed for testing (unit tests not included in this PR) and hopefully could be re-used in the future (it contains borrowed code from other inventory scripts) * load_inventory_from_cache and do_api_calls_and_update_cache methods (, which were largely lifted from other inventory scripts, in a hope to promote consistency in the future) to determine if the cache is fresh and rebuild if necessary. * A 'main' check, to support the script being imported and testable. A new dictionary has been added to the list output, located at ['_meta']['stats'] that informs if the cache was used and how long it took to load the inventory (in 'cache_used' and 'inventory_load_time', respectively). * fixed default value error; change cache time to 300 |
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| README.md | ||
inventory
Inventory scripts allow you to store your hosts, groups, and variables in any way you like. Examples include discovering inventory from EC2 or pulling it from Cobbler. These could also be used to interface with LDAP or database.
chmod +x an inventory plugin and either name it /etc/ansible/hosts or use ansible with -i to designate the path to the script. You might also need to copy a configuration file with the same name and/or set environment variables, the scripts or configuration files have more details.
contributions welcome
Send in pull requests to add plugins of your own. The sky is the limit!