How to solve SessionNotCreatedException exception when trying to create FIREFOX driver on LINUX through Selenium Grid standalone jar 3.14

问题

I am getting org.openqa.selenium.SessionNotCreatedException exception when trying to create driver through Selenium standalone jar 3.14.

I have used below commands to start hub and node

1) java -jar selenium-server-standalone-3.141.59.jar -role hub

2) java -jar selenium-server-standalone-3.141.59.jar -role webdriver -hub http://192.xxx.xx.xxx:4444/grid/register -port 5556 -browser browserName=chrome,maxInstance=3 -browser browserName=firefox,maxInstance=3

Trying to create driver through below code

System.setProperty("webdriver.gecko.driver",
System.getProperty("user.dir") + "/drivers/" +"geckodriver");
DesiredCapabilities caps = DesiredCapabilities.firefox();
caps.setBrowserName("firefox");
caps.setPlatform(Platform.LINUX);
caps.setVersion("64.0");
driver = new RemoteWebDriver(new URL("http://192.xxx.xx.xxx:4444/wd/hub"),caps);

I am getting below exception:

org.openqa.selenium.SessionNotCreatedException: Unable to create new remote session. desired capabilities = Capabilities [{browserName=firefox, moz:firefoxOptions={binary=Optional.empty, args=[], legacy=null, logLevel=null, prefs={}, profile=null}, platform=LINUX}], required capabilities = Capabilities [{}]
Build info: version: '3.3.1', revision: '5234b325d5', time: '2017-03-10 09:10:29 +0000'
System info: host: 'HP-ProBook-440-G5', ip: '127.0.1.1', os.name: 'Linux', os.arch: 'amd64', os.version: '4.15.0-43-generic', java.version: '1.8.0_181'
Driver info: driver.version: RemoteWebDriver
    at org.openqa.selenium.remote.ProtocolHandshake.createSession(ProtocolHandshake.java:126)
    at org.openqa.selenium.remote.HttpCommandExecutor.execute(HttpCommandExecutor.java:141)
    at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:604)
    at org.openqa.selenium.remote.RemoteWebDriver.startSession(RemoteWebDriver.java:244)
    at org.openqa.selenium.remote.RemoteWebDriver.<init>(RemoteWebDriver.java:131)
    at org.openqa.selenium.remote.RemoteWebDriver.<init>(RemoteWebDriver.java:158)
    at com.jio.web.base.TestBase.initDriver(TestBase.java:290)
    at com.jio.web.base.Setup.assignDriver(Setup.java:54)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:86)
    at org.testng.internal.Invoker.invokeConfigurationMethod(Invoker.java:514)
    at org.testng.internal.Invoker.invokeConfigurations(Invoker.java:215)
    at org.testng.internal.Invoker.invokeConfigurations(Invoker.java:142)
    at org.testng.internal.TestMethodWorker.invokeBeforeClassMethods(TestMethodWorker.java:178)
    at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:108)
    at org.testng.TestRunner.privateRun(TestRunner.java:782)
    at org.testng.TestRunner.run(TestRunner.java:632)
    at org.testng.SuiteRunner.runTest(SuiteRunner.java:366)
    at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:361)
    at org.testng.SuiteRunner.privateRun(SuiteRunner.java:319)
    at org.testng.SuiteRunner.run(SuiteRunner.java:268)
    at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:52)
    at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:86)
    at org.testng.TestNG.runSuitesSequentially(TestNG.java:1244)
    at org.testng.TestNG.runSuitesLocally(TestNG.java:1169)
    at org.testng.TestNG.run(TestNG.java:1064)
    at org.testng.remote.AbstractRemoteTestNG.run(AbstractRemoteTestNG.java:114)
    at org.testng.remote.RemoteTestNG.initAndRun(RemoteTestNG.java:251)
    at org.testng.remote.RemoteTestNG.main(RemoteTestNG.java:77)

回答1:

As your Selenium Grid Node is using geckodriver to communicate with the Selenium Grid Hub, so you need to initiate the Selenium Grid Node with the absolute location of the geckodriver as follows:

java -Dwebdriver.gecko.driver=/path/to/geckodriver -jar selenium-server-standalone-3.141.59.jar -role webdriver -hub http://192.xxx.xx.xxx:4444/grid/register -port 5556 -browser browserName=chrome,maxInstance=3 -browser browserName=firefox,maxInstance=3

来源：https://stackoverflow.com/questions/54197174/how-to-solve-sessionnotcreatedexception-exception-when-trying-to-create-firefox