You can find the complete changelog for each version of the Jenkins Plugin at GitHub: https://github.com/saucelabs/jenkins-sauce-ondemand-plugin/blob/master/CHANGELOG.md

Requirements

Install the Plugin

You can install the Sauce OnDemand plugin for Jenkins though the Jenkins Administration page. 

  1. In Jenkins, go to the Administration page. 
  2. Click Manage Jenkins
  3. Click Manage Plugins
  4. Click the Available tab. 
  5. In the list of plugins, find and select Sauce OnDemand Plugin
  6. Click Download now and install after restart
    The plugin file is fairly large, so download may take several minutes.  
  7. In the plugin installation dialog, select Restart Jenkins when installation is complete and no jobs are running

Configure Your Sauce Labs Credentials

The Jenkins plugin provides an interface for storing your Sauce Labs authentication credentials as environment variables on the Jenkins server, which is one of our best practices for testing with Sauce. This allows you to reference your credentials without having to hardcode them into your tests, and because the plugin manages authentication at the global level, you can have multiple jobs running at the same time that use these credentials. 

  1. After the plugin has installed and Jenkins has restarted, go to the Administration page in Jenkins. 
  2. Click Credentials.

  3. You can click an existing domain or click Add domain.

  4. Once in your domain of choice, click Add Credentials.
  5. Under Kind, select Sauce Labs.
  6. Enter the Username and API Access Key for your Sauce account.  
  7. Click OK to save. 
    Your credentials are now saved.

You can now use these credentials on a per project basis. To do so:

  1. Go to the Administration page for one of your projects.
  2. Click Configure.
  3. Under Sauce Labs Options, you will see the credentials you have stored as an option under Credentials

    You can also add credentials here on the fly.

In versions of the plugin prior to 1.147 credential management is handled slightly differently. For older versions of the plugin you will find credential management in the Manage Jenkins > Configure System section:

  1. After the plugin has installed and Jenkins has restarted, go to the Administration page in Jenkins. 
  2. Click Manage Jenkins

  3. Click Configure System.
  4. Under Sauce Support, enter the Username and API Access Key for your Sauce account. 

Once you've set up your authentication credentials as environment variables, you can refer to them in your tests like this:

WebDriver driver = new RemoteWebDriver(
            new URL("http://"+System.getenv("SAUCE_USERNAME")+":"+System.getenv("SAUCE_ACCESS_KEY")+"@ondemand.saucelabs.com:80/wd/hub",
            desiredCapabilities);

Check out the topic Setting Desired Capabilities for Jenkins Projects for more information about using environment variables.