Selenium Grid 2 set up on Windows

Question

I am setting up Selenium Grid 2 (selenium-server-standalone-2.1.0) on Windows 7 (I have also tried Windows Server 2008) both 64 bit. I test the WebDriver locally and all is well.

I launch the hub with:

java -jar selenium-server-standalone-2.1.0.jar -role hub

Adding a webDriver node for FireFox works, but anything else such as Google Chrome throws an IllegalOperation Exception.

For example:

I try adding a node for Chrome:

java -jar selenium-server-standalone-2.1.0.jar -role webDriver -hub http://127.0.0.1:4444 -browser browserName=chrome platform=windows version=12 -port 5556

This shows as a node on the hub when you go to http://localhost:4444/grid/console

I add code to call the webDriver such as:

            DesiredCapabilities capability = new DesiredCapabilities();
            capability.SetCapability(CapabilityType.Platform, "windows");
            capability.SetCapability(CapabilityType.Version, "12");
            capability.SetCapability(CapabilityType.BrowserName, "chrome");

            IWebDriver driver = new RemoteWebDriver(new Uri("http://127.0.0.1:4444/wd/hub"), capability);

I get an exception almost immediately:

{"cannot find : {platform=windows, browserName=chrome, version=12}"}

It seems as if the node isn't even being found. I am new to this is it something I have missed in the set up? (internet explorer does the same and changing versions doesn't seem to help).

I have searched for hours and hours but nothing that matches the exception seems as generic as my problem.

Answer 1

The IllegalOperation Exception {"cannot find : {platform=windows, browserName... is caused by there being no matching capability (it never gets as far as a Node).

If I use a config file when I launch the node that explicitly states the platform and browser such as:

{
"capabilities":
        [
                {
                        "browserName":"firefox",
                        "maxInstances":1
                },
                {
                        "browserName":"chrome",
            "platform":"WINDOWS",
                        "maxInstances":1
                },
                {
                        "browserName":"internet explorer",
                        "version":"9",
                        "platform":"WINDOWS",
                        "maxInstances":1
                }
        ],
"configuration":
        {
                "cleanUpCycle":2000,
                "timeout":30000,
                "proxy":"org.openqa.grid.selenium.proxy.WebDriverRemoteProxy",
                "maxSession":5,
                "url":"http://[myIP]/wd/hub",

        }
}

and launch the hub with this line:
java -jar selenium-server-standalone-2.2.0.jar -role webdriver -nodeConfig myconfig.json -hub http://[myIP]:4444/grid/register

and create the capabilities like so:

DesiredCapabilities capability = new DesiredCapabilities();
capability.SetCapability(CapabilityType.Platform, "WINDOWS");
capability.SetCapability(CapabilityType.BrowserName, "internet explorer");

Then the test works (you have to set all Zones in IE to protected by the way).
N.B. I did notice that windows is UPPERCASE as in WINDOWS or you get an error.

Answer 2

The docs do actually document this but in an unclear way.

java -jar selenium-server-standalone-2.1.0.jar -role webDriver -hub http://127.0.0.1:4444 -browser browserName=chrome platform=windows version=12 -port 5556

Needs to be:

java -Dwebdriver.chrome.driver="C:\Users\Mike\Documents\Java Libraries\Selenium\chromedriver\chromedriver.exe" -jar selenium-server-standalone-2.1.0.jar -role webDriver -hub http://127.0.0.1:4444/grid/register -browser "browserName=chrome,platform=WINDOWS,version=12" -port 5556

You are missing grid/register from the hub URL. On top of this, if you are passing multiple arguments to -browser they need to be enclosed in quotes and separated by commas without spaces. You also need to pass in the webdriver.chrome.driver property in a similar way to how I did it.

You can check that it has successfully registered by going to your browser and hitting:

http://localhost:4444/grid/console

And as a sidenote, this is another way you could declare the desired capabilities:

DesiredCapabilities dc = DesiredCapabilities.chrome();
dc.setVersion("12");
dc.setPlatform(Platform.WINDOWS);

Answer 3

Lets consider Hub running on Machine-A whose IPAddress is = 192.168.10.10 default port no. 4444.
Lets Node running on Machine-B whose IPAddress is = 192.168.10.20.
Lets consider operating System on HUB and Node is installed on drive C:\ (C-Drive). 
create a folder named selenium on c:\ as c:\selenium.
keep binaries of IExplorer.exe, chromeDriver.exe and Selenium-Standalone-server2.10.0.jar. (on both machine A and B).

configuring HUB on Machine-A
1- open Command prompt 
2- go to folder selenium using 
         i type cd\ then enter
         ii  type c:  then enter
         iii c:> cd selenium then enter
3- java -jar selenium-server-standalone-2.20.0.jar -role hub

Configuring NOde on Machine - B
1- open Command prompt 
2- go to folder selenium using 
         i type cd\ then enter
         ii  type c:  then enter
         iii c:> cd selenium then enter
3- java -jar selenium-server-standalone-2.20.0.jar -role node -hub http://192.168.10.10:4444/grid/register  -port 5560 -browser  browserName=chrome,maxInstance=4,platform=WIN8_1 -Dwebdriver.ie.driver=c:\selenium\ChromeDriver.exe

your node will get register with Hub on port 5560.

Test Case will become as- 

package testCase;

import static org.junit.Assert.*;

import java.net.URL;
import java.util.concurrent.TimeUnit;

import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.openqa.selenium.By;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.remote.DesiredCapabilities;
import org.openqa.selenium.remote.RemoteWebDriver;

public class Avinash_Google_Chrome 
{

    WebDriver driver;
    String baseUrl , nodeUrl;

    @Before
    public void setUp() throws Exception 
    {
        nodeUrl = "http://192.168.10.20:5560/wd/hub"; //Machine-A IPAdress  
                                                     with Port No.          

        DesiredCapabilities capability = DesiredCapabilities.chrome();

        driver = new RemoteWebDriver(new URL(nodeUrl),capability);
        driver.manage().window().maximize();
        driver.manage().timeouts().implicitlyWait(2, TimeUnit.MINUTES);
    }

    @After
    public void tearDown() throws Exception 
    {
        driver.quit();
    }

    @Test
    public void test() throws InterruptedException
    {

        driver.get("https://www.google.co.in");     
        Thread.sleep(3000);     
        driver.findElement(By.linkText("Gmail")).click();
        Thread.sleep(3000); 
        driver.findElement(By.id("Email")).sendKeys("[email protected]");

        driver.findElement(By.id("Passwd")).sendKeys("********");

        driver.findElement(By.id("signIn")).click();

        Thread.sleep(6000);
    }

}