This uses Locust to do distributed load generation for Designate deployments. It includes the following:

• Graphite support for realtime metrics
• Authentication on Locust's web API to guard your locust cluster
• Configurable relative weights for your Locust tasks, with separate sets of weights to simulate small-sized and large-sized users
• Persisted reports: a summary report is automatically stored to disk when the test is stopped. Locust's web server is updated to serve these reports.
• Support for "Digaas" a separate service that can poll the nameserver backend and give us statistics about the API-nameserver propagation time under load. These statistics are automatically fetched and integrated into the persisted report

See setup.sh for an installation sequence (on Ubuntu 12.04). This currently relies on my fork of locust that has a couple of minor changes.

Copy accurate_config.py.sample -> accurate_config.py. This file can be updated with:

• required: The Designate API endpoint
• required: The list of tenants to use
• optional: A username/password for the Locust's web server
• optional: The location of your graphite server
• optional: The location of Digaas

Currently, this test requires a prepared Designate environment. When the test starts, it spends some time gathering data from your environment to use for the duration of the test. You will need to create a bunch of domains and records beforehand, and specify the tenant ids you're using in the config.

After defining your configs, for Locust's web interface run the following

locust -f accurate.py

Then visit localhost:8089 in a browser. The --host flag gives the location of your designate endpoint. Make sure your --host value has the protocal (http://) at the front, or Locust gives an error.

For Locust's commandline interface:

locust -f accurate.py --no-web -c 1 -r 1 -n 10

where

`-c` specifies the number of clients
`-r` specifies the hatch rate
`-n` specifies the total number of requests to make

On your master node:

locust -f example.py --master

Take note of your master's address, and on each of your slave nodes:

locust -f example.py --slave --master-host=<master_address>