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Description:

xrallydocker 1.0.0

xrally-docker
xRally plugins for Docker engine.
What is it?!
Originally, it was created as a quick proof-of-concept to show ability of
Rally to test platforms other than
OpenStack. After the first preview,
it became obvious that it should be developed as a complete package.
xrally_docker is a pack of xRally plugins for execution different workloads
at the top of Docker Engine. Such workloads can be used as like for testing
environments with Docker or testing behaviour of specified docker image.
How to use?!
Install package
xrally_docker package is configured to be auto-discovered by Rally. Since
rally package is a dependency of xrally_docker , so to start using
xrally_docker you need to install just one package:
pip install xrally_docker

Specify entry-point of docker engine to use
The next step is to specify entry-point to docker, i.e. create rally
environment. There are 2 way to do it:

Specify environment specification manually. For a simple case (no cert,
tls, etc), it looks like {"docker@existing": {}}.
Create environment specification from system environment variables
(supported by Rally >= 0.11.2) using
rally env create --name example --from-sysenv command. An expected
system variables are the same as native docker client supports.

Check that Rally can access the docker
First of all try to execute rally env check command. It checks all
platforms of the environment to be available. If it does not show any errors
for communicating with docker, go and execute any task against docker.
If is fails, try to execute the command again with --detailed flag.
Also, you can use rally env info command for the same purpose. Unlike
rally env check it will not only check the platforms, but print some
information about them. In case of docker platform, it will print the similar
to docker --version data.
Execute a workload against docker
Here is a simple workload:
---
version: 2
title: Simple task with only one workload
subtasks:
-
title: a subtask with one workload
description: This workload should run a container from "ubuntu"
image and execute simple command.
scenario:
Docker.run_container:
image_name: "ubuntu"
command: "echo 'Hello world!'"
runner:
constant:
times: 10
concurrency: 2
sla:
failure_rate:
max: 0

This task will download ubuntu image first, if it does not present in the
system. Then, it will run 10 containers from the image with 2 concurrency and
execute a simple command. The output of the command will be saved as
TextArea and will be available via json and html reports.
See plugin references for the full list of available plugins for docker
platform to combine workloads.
Known issues
This package works fine, but you need to install the proper version of Docker
client which suits your Docker API version.