How to run headless REMOTE chrome using robot framework

In newer versions of SeleniumLibrary (3.1.0) and Selenium (3.8.0) you can simply set the browser to headlesschrome instead of chrome.

There's also headlessfirefox available.

Ex.

Open Browser      http://www.yoursite.com    headlesschrome

http://robotframework.org/SeleniumLibrary/SeleniumLibrary.html#Open%20Browser

You can now use aliases:

*** Settings ***
Library    SeleniumLibrary

*** Test Cases ***
Firefox
    Open Browser    http://robotframework.org/    headlessfirefox
    Capture Page Screenshot
    [Teardown]    Close All Browsers

Chrome
    Open Browser    http://robotframework.org/     headlesschrome
    Capture Page Screenshot
    [Teardown]    Close All Browsers

See https://github.com/robotframework/SeleniumLibrary/pull/1011

To run headless you need to set the arguments and convert them to capabilities so that they can be used when using the Remote Driver option. This works for both the Open Browser as well as the Create Webdriver way of navigating to a URL.

*** Settings ***
Library    Selenium2Library

Suite Teardown    Close All Browsers

*** Test Cases ***
Headless Chrome - Create Webdriver
    ${chrome_options} =     Evaluate    sys.modules['selenium.webdriver'].ChromeOptions()    sys, selenium.webdriver
    Call Method    ${chrome_options}   add_argument    headless
    Call Method    ${chrome_options}   add_argument    disable-gpu
    ${options}=     Call Method     ${chrome_options}    to_capabilities      

    Create Webdriver    Remote   command_executor=http://localhost:4444/wd/hub    desired_capabilities=${options}

    Go to     http://cnn.com

    Maximize Browser Window
    Capture Page Screenshot

Headless Chrome - Open Browser
    ${chrome_options} =     Evaluate    sys.modules['selenium.webdriver'].ChromeOptions()    sys, selenium.webdriver
    Call Method    ${chrome_options}   add_argument    headless
    Call Method    ${chrome_options}   add_argument    disable-gpu
    ${options}=     Call Method     ${chrome_options}    to_capabilities     

    Open Browser    http://cnn.com    browser=chrome    remote_url=http://localhost:4444/wd/hub     desired_capabilities=${options}

    Maximize Browser Window
    Capture Page Screenshot

Please try the below. Run the keyword in Test setup

Running the tests in chrome headless
    ${chrome options} =     Evaluate    sys.modules['selenium.webdriver'].ChromeOptions()    sys, selenium.webdriver
    Call Method    ${chrome options}   add_argument    headless
    Call Method    ${chrome options}   add_argument    disable-gpu
    Create Webdriver    Chrome    chrome_options=${chrome options}