Cayley Cookbook

Cayley is an open-source graph inspired by the graph database behind Freebase and Google's Knowledge Graph.

This cookbook sets up a Cayley instance through the Chef automation platform.

Supported Platforms

• Ubuntu 14.04 LTS
• Amazon

Supported Backends

• Memory
• MongoDB
• LevelDB (Coming soon!)

Attributes

Key	Type	Default	Description
node['cayley']['version']	String	0.3.0	Version of Cayley to manage.
node['cayley']['backend']	String	mem	Determines the type of the underlying database. (mem
node['cayley']['directory']	String	/opt/cayley	Directory for Cayley to be installed
node['cayley']['listen_host']	String	0.0.0.0	The hostname or IP address for Cayley's HTTP server to listen on.
node['cayley']['listen_port']	String	64210	The port for Cayley's HTTP server to listen on.
node['cayley']['read_only']	Boolean	false	If true, disables the ability to write to the database using the HTTP API.
node['cayley']['log_dir']	String	/var/log/cayley	Location to store runtime and error log messages.
node['cayley']['db_path']	String	/tmp/testdb	Where the database actually lives. For mem, file location of initial data set. For mongodb, hostname and port.
node['cayley']['db_options']	Object	{}	Per-Database Options.

Per-Database Options

Memory

No special options.

LevelDB

Key	Type	Default	Description
node['cayley']['db_options']['write_buffer_mb']	Integer	20	The size in MiB of the LevelDB write cache. Increasing this number allows for more/faster writes before syncing to disk. Default is 20, for large loads, a recommended value is 200+.
node['cayley']['db_options']['cache_size_mb']	Integer	2	The size in MiB of the LevelDB block cache. Increasing this number uses more memory to maintain a bigger cache of triple blocks for better performance.

MongoDB

Key	Type	Default	Description
node['cayley']['db_options']['database_name']	String	cayley	The name of the database within MongoDB to connect to. Manages its own collections and indicies therein.

Usage

cayley::setup

Include cayley in your node's run_list:

{
  "run_list": [
    "recipe[cayley::setup]"
  ]
}

Or for OpsWorks:

Contributing

1. Fork the repository on Github
2. Create a named feature branch (i.e. add-new-recipe)
3. Write you change
4. Write tests for your change (if applicable)
5. Run the tests, ensuring they all pass
6. Submit a Pull Request

License and Authors

Author:: Sean Stavropoulos (sean.stavro@gmail.com)