i have a few queries regarding Selenium Grid.
Consider the below scenario:
Machine A:
registered as hub by command=
java -jar selenium-server-standalone-2.44.0.jar -role hub
Machine B:having Windows 7 and chrome browser
registered as node by command=java -Dwebdriver.chrome.driver="path of chrome driver" –jar selenium-server-standalone-2.44.0.jar –role webdriver –hub http://ipnameofHub:4444/grid/register -port 5566
Machine C: having Windows 7 and chrome browser
registered as node by command=java -Dwebdriver.chrome.driver="path of chrome driver" –jar selenium-server-standalone-2.44.0.jar –role webdriver –hub http://ipnameofHub:4444/grid/register -port 5566
Machine D: having Windows 7 and chrome browser
registered as node by command=java -Dwebdriver.chrome.driver="path of chrome driver" –jar selenium-server-standalone-2.44.0.jar –role webdriver –hub http://ipnameofHub:4444/grid/register -port 5566
DesiredCapabilities dc=new DesiredCapabilities();
dc.setBrowserName("chrome");
dc.setPlatform(Platform.WINDOWS);
WebDriver driver=new RemoteWebDriver(new URL("http://localhost:4444/wd/hub"),dc);
When i run a test, which node will grid choose and on what basis, since all the nodes have the same platform and browser as specified in the DesiredCapabilities.
Is the node randomly chosen or the first node matching the DesiredCpabilities is chosen?
Question No.2
If i want to run a test on specifically Machine D, how can that be done.
Thanks in advance.
it is chosen based on first matching capability and available node.
To run on specific node, you can write your own algorithm to choose. the following link may help to write custom capability matcher https://www.assertthat.com/posts/make_your_selenium_grid_nodes_personalized
Related
I have register two platform with chrome browser on windows 7 and windows 10 into selenium grid server.
I want to run a test at Chrome browser on Windows 10 but when i run the test, the test randomly run on Windows 7 and randomly run on Windows 10 on chrome.
Do you have an idea how to do the configuration to run the test on specific browser and platform when we have registered multiple platform?
hub:
java -jar selenium-server-standalone-3.7.1.jar -role hub
register node on windows 7:
java -Dwebdriver.chrome.driver=chromedriver_2.33.exe -jar selenium-server-standalone-3.7.1.jar -role node -hub http://localhost:4444
register node on windows 10:
java -Dwebdriver.chrome.driver=chromedriver_2.33.exe -jar selenium-server-standalone-3.7.1.jar -role node -hub http://localhost:4444
protractor.conf.js
exports.config = {
specs: [
'**/*.mytest.e2e-spec.ts'
],
multiCapabilities: [
{
browserName: 'chrome',
platform: 'WIN10',
}
],
seleniumAddress: 'http://localhost:4444/wd/hub',
baseUrl: 'http://localhost:4200/',
framework: 'jasmine',
jasmineNodeOpts: {
print: function () {
}
},
onPrepare: function () {
require('ts-node').register({
project: 'e2e/tsconfig.e2e.json'
});
}
};
Selenium Grid Installation Process:-
Download Selenium server standalone jar file in which you want to
create Hub
Create a new java project and add it to build path
Start the Hub Using Below Command in your machine:-
java -jar selenium-server-standalone-3.9.1.jar –role hub -port 4446
Open ip address/grid/console in host browser "or" localhost: portnumber/grid/console
Start the Node Using Below Command in another machine:
Download Selenium server standalone jar file in another laptop
it is not necessary that node contains eclipse. But Java Should be installed.
go to file path where selenium standalone is kept
Type Below command
java -jar selenium-server-standalone-3.9.1.jar –role webdriver –hub ipaddress/grid/
register –port 5566
(but Here your test will fail because here file path for chrome Driver or gecko driver is not provided in the hub.)
java –Dwebdriver.chrome.driver="provide path for chrome driver" -jar selenium-server-standalone-3.9.1.jar –role webdriver –hub ipaddress/grid/register –port 5566
I would suggest that you do the following
Create a node configuration file as seen here, wherein for the WINDOWS7 node, you specify the appropriate platform (make sure you pick a value from here)
Now you start off the node by specifying this newly created nodeConfig json using the command line parameter -nodeConfig node.json ( For more details refer to my blog post here )
Now based on the PLATFORM capabilities specified by your test, it would be routed to the appropriate node.
You need to tweak the commands for registering the nodes as follows :
Register node on Windows 7:
java -Dwebdriver.chrome.driver=chromedriver_2.33.exe -jar selenium-server-standalone-3.7.1.jar -role node -hub http://localhost:4444/grid/register
Register node on Windows 10:
java -Dwebdriver.chrome.driver=chromedriver_2.33.exe -jar selenium-server-standalone-3.7.1.jar -role node -hub http://localhost:4444/grid/register
As per your question and DebanjanB answer, You have two nodes and two hubs. You need to register the nodes with same hub. Please try with following configuration, it may works.
Start your hub on windows 7 Machine with following command,
java -jar selenium-server-standalone-3.7.1.jar -role hub
Start/register your first node on windows 7 with following command,
java -Dwebdriver.chrome.driver=chromedriver_2.33.exe -jar selenium-server-standalone-3.7.1.jar -role node
start/register your second node on windows 10 with following command,
java -Dwebdriver.chrome.driver=chromedriver_2.33.exe -jar selenium-server-standalone-3.7.1.jar -role node -hub http://"IP Address OF Windows 7 machine":4444/grid/register
To verify the nodes are listed on hub, just open the url http://localhost:4444/grid/console on windows 7 machine. Then, verify your nodes are listed on the page.
You have to run your script from the windows 7 machine because your selenium address is using localhost address( seleniumAddress: 'http://localhost:4444/wd/hub'). if you want to run from windows 10 machine or any other machine. change the selenium address as 'http://"windows7ipaddress":4444/wd/hub' in config file.
I have tested it on my machine it is working fine. It will start the chrome on windows 10 machine as your multiCapabilities platform value is WIN10.
note: replace the value of ip address value in place where ever required.
My scenario is, I will launch a instance of a browser and perform some operations and then without closing current browser new browser of same type will be opened and verification needs to be done.
Webdriver driver = driverInitialize.getDriver();
//Perform some operations
Webdriver driver2 = driverInitialize.getDriver();
//Perform some operations
The problem is only with firefox and IE as second instance of browser is not getting launched till the timeout of first instance happens but the same works fine with chrome browser. On launching the node and hub, for firefox and IE it says "WARN - Max instance not specified. Using default = 1" even after specifying the maximum instance in the respective nodes. The commands used for launching hub and node is presented below
Hub : java -jar selenium-server-standalone-2.44.0.jar -role hub -port 4444
Firefox Node : java -jar selenium-server-standalone-2.44.0.jar -role node -hub http://127.0.0.1:4444/grid/register -port 5553 -browser browserName=firefox,maxInstance=5 -Dwebdriver.version="30"
IE Node : java -jar selenium-server-standalone-2.44.0.jar -role webdriver -hub http://127.0.0.1:4444/grid/register -port 5555 browserName=ie,maxInstance=5 -Dwebdriver.ie.driver="C:\IEDriverServer.exe"
Chrome Node : java -jar selenium-server-standalone-2.44.0.jar -role webdriver -hub http://127.0.0.1:4444/grid/register -port 5555 browserName=chrome maxInstance=5 -Dwebdriver.chrome.driver="C:\chromedriver.exe"
Versions of browser
Chrome : 40.0.2214.115; Firefox : 34.0; IE : 10.0.9200.17228;
I think you should take a look at this stack overflow question:
Selenium Grid: MaxSessions vs MaxInstances
Max sessions will override max instances, so you need to set both.
If you have max sessions = 1 and max instances = 10, only 1 test will be allowed to run. Check your configuration in this case.
You can also see these options on the Grid 2 wiki:
https://code.google.com/p/selenium/wiki/Grid2
EDIT**
This has moved to: https://github.com/SeleniumHQ/selenium/wiki/Grid2
Hub: MAC 64-bit
Nod: Windows 32-bit
Unable to run chrome browser using Selinum grid MAC as hub and Windows as nod?
using below code i am getting an error (The path to the driver executable must be set by the webdriver.chrome.driver system property; for more information, see http://code.google.com/p/selenium/wiki/ChromeDriver. The latest version can be downloaded from http://code.google.com/p/chromedriver/downloads/list Command duration or timeout: 668 milliseconds)
public void chromeWindows() throws MalformedURLException{
System.setProperty("webdriver.chrome.driver", "/Users/vinayakkhatate/Desktop/jar/chromedriver2");
ChromeOptions opt = new ChromeOptions();
opt.setBinary("C:/Users/user/AppData/Local/Google/Chrome/Application/chrome.exe");
DesiredCapabilities capabilies = DesiredCapabilities.chrome();
capabilies.setBrowserName("chrome");
capabilies.setPlatform(Platform.VISTA);
driver = new RemoteWebDriver(new URL("http://10.0.11.118:5566/wd/hub"), capabilies);
driver.get(baseUrl);
System.out.println(driver.getTitle());
driver.close();
driver.quit();
}
I have solution to run Chrome browser from Mac machine to Windows Vista
(download and save chromedriver in windows vista machine)
Start the hub in Mac with below command
java -jar selenium-server-standalone-2.33.0.jar -role hub
Start the node in windows with below command
java -jar selenium-server-standalone-2.33.0.jar -role node -hub http://localhost:4444/grid/register -maxSession 15 -browser browserName="chrome",version=ANY,platform=WINDOWS,maxInstances=5 -Dwebdriver.chrome.driver=pathtochromedriver\chromedriver.exe
Now write code in eclipse in Mac machine
DesiredCapabilities capabilies = DesiredCapabilities.chrome();
capabilies.setBrowserName("chrome");
capabilies.setPlatform(Platform.ANY);
driver = new RemoteWebDriver(new URL("http://<ip address of windows machine>:5555/wd/hub"), capabilies);
Actually, the chromedriver.exe has to be stored on the Windows node. I do it by creating subfolder /lib in my test folder where I store the chromedriver and all other selenium grid related stuff. Later on, when running the node, do it like this:
java -jar lib/selenium-server-standalone-2.28.0.jar -role node -hub http://localhost:4444/grid/register -maxSession 15 -browser browserName="chrome",version=ANY,platform=WINDOWS,maxInstances=15 -Dwebdriver.chrome.driver=lib\chromedriver.exe
especially note the -D switch:
-Dwebdriver.chrome.driver=lib\chromedriver.exe
Thats how I set up the chromedriver.exe path. Notice the relative path, so I do not have to care really about where in absolute path the tool is running. Hope it helps
EDIT
Obviously, the hub and node computers should be acessible by IP. For instance, my work PC has IP 10.131.7.11 in our internal network so if this would be the hub computer, then the node setup would be like this:
java -jar lib/selenium-server-standalone-2.28.0.jar -role node -hub http://10.131.7.11:4444/grid/register -maxSession 15 -browser browserName="chrome",version=ANY,platform=WINDOWS,maxInstances=15 -Dwebdriver.chrome.driver=lib\chromedriver.exe
Please note that the localhost changed to IP of the hub. So next steps for you are:
Set up hub and node to be on same network and being accessible by IP adress
Run hub on the mac machine
Run node on the vista, pointing out to the IP adress of the hub
Cross your fingers :)
And try running the chrome again
EDIT2
This is how I run chrome:
if (System.getProperty("os.name").contains("Windows")) {
System.setProperty(ChromeDriverService.CHROME_DRIVER_EXE_PROPERTY, "chromedriver.exe");
} else {
System.setProperty(ChromeDriverService.CHROME_DRIVER_EXE_PROPERTY, "chromedriver");
}
capabilities = DesiredCapabilities.chrome();
capabilities.setCapability("chrome.switches", Arrays.asList("--start-maximized"));
driver = new RemoteWebDriver(new URL("http://127.0.0.1:4444/wd/hub"), capabilities);
Start the hub in Mac with below command
java -jar selenium-server-standalone-2.33.0.jar -role hub
Start the node in windows with below command
java -jar selenium-server-standalone-2.33.0.jar -role node -hub http://localhost:4444/grid/register -maxSession 15 -browser browserName="chrome",version=ANY,platform=WINDOWS,maxInstances=15 -Dwebdriver.chrome.driver=pathtochromedriver\chromedriver.exe
Download chromedriver from below location
https://code.google.com/p/chromedriver/downloads/list
Now intialize driver instance with below logic
System.setProperty("webdriver.chrome.driver", "/Users/test/chromedriver");
DesiredCapabilities dc=new DesiredCapabilities();
dc.setBrowserName("chrome");
dc.setPlatform(Platform.WINDOWS);
driver = new RemoteWebDriver(new URL("http://localhost:4444/wd/hub"), dc);
driver.get(Constants.SERVER_URL_NAME);
What is the difference between "-role node" and "-role webdriver" in selenium grid ?
i.e.
is there any difference between
java -jar selenium-server-standalone-2.16.0.jar -role node -hub http://a.b.c.d:4444/grid/register
and
java -jar selenium-server-standalone-2.16.0.jar -role webdriver -hub http://a.b.c.d:4444/grid/register
?
Ok..I got the answer :)
The following lines throws light on my question :
For backwards compatibility "wd"(webdriver) and "rc"(remotecontrol) roles are still a valid subset of the "node" role. But those roles limit the types of remote connections to their corresponding API, while "node" allows both RC and WebDriver remote connections.
Ok, I have already several testcases written for Webdriver approach. But now I need get the Selenium Grid for possible stress testing of the webapp.
I found this demo but its unable to control the Firefox 11. Then I found out this wiki page which is two level higher than I can understand, but that JAR File is supposedly able to control the Firefox 11.
What I need - some resources how to get the Grid started and how to let it do simple test - like writing "Hello World" into Google search bar and then clicking "Search."
EDIT
This is the error when I am trying to run the grid as node
D:\_dev\selenium-grid-1.0.8\lib>java -jar selenium-server-standalone-2.20.0.jar -role node -hub http://localhost:4444/grid/register
22-Mar-2012 10:33:48 org.openqa.grid.selenium.GridLauncher main
INFO: Launching a selenium grid node
Exception in thread "main" java.lang.NoSuchMethodError: java.lang.String.isEmpty()Z
at org.openqa.grid.common.RegistrationRequest.getRemoteControlConfiguration(RegistrationRequest.java:585)
at org.openqa.grid.internal.utils.SelfRegisteringRemote.startRemoteServer(SelfRegisteringRemote.java:86)
at org.openqa.grid.selenium.GridLauncher.main(GridLauncher.java:72)
And this is output from server which seems ok
D:\_dev\selenium-grid-1.0.8\lib>java -jar selenium-server-standalone-2.20.0.jar -role hub
22-Mar-2012 10:33:33 org.openqa.grid.selenium.GridLauncher main
INFO: Launching a selenium grid server
360 [main] INFO org.seleniumhq.jetty7.server.Server - jetty-7.x.y-SNAPSHOT
422 [main] INFO org.seleniumhq.jetty7.server.handler.ContextHandler - started o.s.j.s.ServletContextHandler{/,null}
438 [main] INFO org.seleniumhq.jetty7.server.AbstractConnector - Started SocketConnector#0.0.0.0:4444
If you are working with windows, you need to add the path to firefox to your PATH environment variable. The reason for this is, that windows then knows what program to start, when you call firefox from command line, for example.
Then you need to donwload the selenium server standalone and then start the hub
java -jar selenium-server-standalone-2.20.0.jar -role hub
and also the client:
java -jar selenium-server-standalone-2.20.0.jar -role node -hub http://localhost:4444/grid/register
Now you need to create a new Java Project in Eclipse, for example like so:
class MyFristTest{
//using the #test annotation tells eclipse
//to use junit (or tells you to import it)
#Test
public void myTest(){
Selenium selenium = new DefaultSelenium(“localhost”, 4444, “*firefox”, “http://www.google.com”);
DesiredCapabilities capability = DesiredCapabilities.firefox();
WebDriver driver = new RemoteWebDriver(new URL("http://localhost:4444/wd/hub"), capability);
driver.get("http://www.example.com");
driver.findElement(By.linkText("RFC 2606")).click();
driver.findElement(By.linkText("txt")).click();
}
If you now start the JUnit Test, it should magically work.