Hi all,

We just made a change in the images and introduces the env var START_XVFB, you can set it to false(or anything different to true when starting the container, and then Xvfb won't be started.

docker network create grid
docker run -d -p 4444:4444 --net grid --name selenium-hub selenium/hub
docker run -d --net grid -e HUB_HOST=selenium-hub -e START_XVFB=false -v /dev/shm:/dev/shm selenium/node-chrome
docker run -d --net grid -e HUB_HOST=selenium-hub -e START_XVFB=false -v /dev/shm:/dev/shm selenium/node-firefox

If you do that, and check the running processes in the container, you'll see:

seluser@6c5028fb1dad:~$ ps aux
USER       PID %CPU %MEM    VSZ   RSS TTY      STAT START   TIME COMMAND
seluser      1  0.2  0.1  58660 18484 ?        Ss   20:30   0:00 /usr/bin/python /usr/bin/supervisord --configuration /etc/supervisord.conf
seluser     13  0.0  0.0  20988  3364 ?        S    20:30   0:00 /bin/bash /opt/bin/start-selenium-node.sh
seluser     26  5.1  1.2 7244440 129376 ?      Sl   20:30   0:03 java -jar /opt/selenium/selenium-server-standalone.jar -role node -hub http://selenium-hub:4444/grid/register -nodeConfig /opt/selenium/config.json
seluser     55  0.0  0.0  21188  3792 pts/0    Ss   20:31   0:00 bash
seluser    774  0.0  0.0  37360  3244 pts/0    R+   20:32   0:00 ps aux

So Xvfb won't run and you'll need to run tests with the headless flag set to true, e.g. in Java:

    @Test()
    public void firefoxTest() throws Exception {
        FirefoxOptions firefoxOptions = new FirefoxOptions();
        firefoxOptions.setHeadless(true);
        WebDriver driver = new RemoteWebDriver(new URL("http://localhost:4444/wd/hub"), firefoxOptions);
        driver.get("http://the-internet.herokuapp.com");
        Assert.assertEquals(driver.getTitle(), "The Internet");
        driver.quit();
    }

and for Chrome:

    @Test()
    public void chromeProfile() throws Exception {
        ChromeOptions chromeOptions = new ChromeOptions();
        chromeOptions.setHeadless(true);
        WebDriver driver = new RemoteWebDriver(new URL("http://localhost:4444/wd/hub"), chromeOptions);
        driver.get("http://the-internet.herokuapp.com");
        Assert.assertEquals(driver.getTitle(), "The Internet");
        driver.quit();
    }

Therefore you can now run the images without Xvfb. I will comment again when the images with this change are released and pushed to Docker Hub.

Uh oh!

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