Tengo un Google Compute Engine basado en Debian para ejecutar mis scripts de Selenium, pero por mi vida no puedo ejecutar ningún script que interactúe con Chrome. Intenté instalar Chrome y Chromium, y todas las dependencias, sin llegar más lejos. Todavía falla
El script webdriverio: script.js
var webdriverio = require('webdriverio');
var options = { desiredCapabilities: { browserName: 'chrome' } };
var client = webdriverio.remote(options);
client
.init()
.then(()=> {
console.log('init ok')
},
(err)=> {
console.log('init failed', err)
})
.url('https://duckduckgo.com/')
.getTitle().then(function(title) {
console.log('Title is: ' + title);
})
.end();
Salida completa denode script.js
Este es básicamente un subconjunto del error del proceso Selenium.
init failed { Error
message: 'unknown error: Chrome failed to start: exited abnormally\n (Driver info: chromedriver=2.30.477691 (6ee44a7247c639c0703f291d320bdf05c15
31b57),platform=Linux 3.16.0-4-amd64 x86_64) (WARNING: The server did not provide any stacktrace information)\nCommand duration or timeout: 60.05 s
econds\nBuild info: version: \'3.4.0\', revision: \'unknown\', time: \'unknown\'\nSystem info: host: \'dev-ACME-no\', ip: \'10.132.0.2\', os.name:
\'Linux\', os.arch: \'amd64\', os.version: \'3.16.0-4-amd64\', java.version: \'1.8.0_121\'\nDriver info: driver.version: ChromeDriver',
type: 'RuntimeError',
seleniumStack:
{ status: 13,
type: 'UnknownError',
message: 'An unknown server-side error occurred while processing the command.',
orgStatusMessage: 'unknown error: Chrome failed to start: exited abnormally\n (Driver info: chromedriver=2.30.477691 (6ee44a7247c639c0703f291
d320bdf05c1531b57),platform=Linux 3.16.0-4-amd64 x86_64) (WARNING: The server did not provide any stacktrace information)\nCommand duration or time
out: 60.05 seconds\nBuild info: version: \'3.4.0\', revision: \'unknown\', time: \'unknown\'\nSystem info: host: \'dev-ACME-no\', ip: \'10.132.0.2\
', os.name: \'Linux\', os.arch: \'amd64\', os.version: \'3.16.0-4-amd64\', java.version: \'1.8.0_121\'\nDriver info: driver.version: ChromeDriver'
} }
El proceso del selenio
13:26:19.237 INFO - Selenium build info: version: '3.4.0', revision: 'unknown'
13:26:19.237 INFO - Launching a standalone Selenium Server
2017-06-21 13:26:19.256:INFO::main: Logging initialized @248ms to org.seleniumhq.jetty9.util.log.StdErrLog
13:26:19.306 INFO - Driver provider org.openqa.selenium.ie.InternetExplorerDriver registration is skipped:
registration capabilities Capabilities [{ensureCleanSession=true, browserName=internet explorer, version=, platform=WINDOWS}] does not match the c
urrent platform LINUX
13:26:19.306 INFO - Driver provider org.openqa.selenium.edge.EdgeDriver registration is skipped:
registration capabilities Capabilities [{browserName=MicrosoftEdge, version=, platform=WINDOWS}] does not match the current platform LINUX
13:26:19.306 INFO - Driver class not found: com.opera.core.systems.OperaDriver
13:26:19.307 INFO - Driver provider com.opera.core.systems.OperaDriver registration is skipped:
Unable to create new instances on this machine.
13:26:19.307 INFO - Driver class not found: com.opera.core.systems.OperaDriver
13:26:19.307 INFO - Driver provider com.opera.core.systems.OperaDriver is not registered
13:26:19.308 INFO - Driver provider org.openqa.selenium.safari.SafariDriver registration is skipped:
registration capabilities Capabilities [{browserName=safari, version=, platform=MAC}] does not match the current platform LINUX
2017-06-21 13:26:19.347:INFO:osjs.Server:main: jetty-9.4.3.v20170317
2017-06-21 13:26:19.384:INFO:osjsh.ContextHandler:main: Started o.s.j.s.ServletContextHandler@55f3ddb1{/,null,AVAILABLE}
2017-06-21 13:26:19.400:INFO:osjs.AbstractConnector:main: Started ServerConnector@1794d431{HTTP/1.1,[http/1.1]}{0.0.0.0:4444}
2017-06-21 13:26:19.400:INFO:osjs.Server:main: Started @393ms
13:26:19.400 INFO - Selenium Server is up and running
13:26:19.685 INFO - SessionCleaner initialized with insideBrowserTimeout 0 and clientGoneTimeout 1800000 polling every 180000
Selenium started
13:26:24.408 INFO - Executing: [new session: Capabilities [{rotatable=true, locationContextEnabled=true, loggingPrefs=org.openqa.selenium.logging.L
oggingPreferences@71d24c0f, browserName=chrome, javascriptEnabled=true, handlesAlerts=true, requestOrigins={name=webdriverio, version=4.6.2, url=ht
tp://webdriver.io}}]])
13:26:24.435 INFO - Creating a new session for Capabilities [{rotatable=true, locationContextEnabled=true, loggingPrefs=org.openqa.selenium.logging
.LoggingPreferences@71d24c0f, browserName=chrome, javascriptEnabled=true, handlesAlerts=true, requestOrigins={name=webdriverio, version=4.6.2, url=
http://webdriver.io}}]
Starting ChromeDriver 2.30.477691 (6ee44a7247c639c0703f291d320bdf05c1531b57) on port 19256
Only local connections are allowed.
13:27:24.920 WARN - Exception thrown
java.util.concurrent.ExecutionException: org.openqa.selenium.WebDriverException: java.lang.reflect.InvocationTargetException
Build info: version: '3.4.0', revision: 'unknown', time: 'unknown'
System info: host: 'dev-ACME-no', ip: '10.132.0.2', os.name: 'Linux', os.arch: 'amd64', os.version: '3.16.0-4-amd64', java.version: '1.8.0_121'
Driver info: driver.version: unknown
at java.util.concurrent.FutureTask.report(FutureTask.java:122)
at java.util.concurrent.FutureTask.get(FutureTask.java:192)
at org.openqa.selenium.remote.server.DefaultSession.execute(DefaultSession.java:183)
at org.openqa.selenium.remote.server.DefaultSession.<init>(DefaultSession.java:119)
at org.openqa.selenium.remote.server.DefaultSession.createSession(DefaultSession.java:95)
at org.openqa.selenium.remote.server.DefaultDriverSessions.newSession(DefaultDriverSessions.java:131)
at java.util.stream.ReferencePipeline.findFirst(ReferencePipeline.java:464)
at org.openqa.selenium.remote.server.handler.NewSession.handle(NewSession.java:59)
at org.openqa.selenium.remote.server.handler.NewSession.handle(NewSession.java:36)
at org.openqa.selenium.remote.server.rest.ResultConfig.handle(ResultConfig.java:111)
at org.openqa.selenium.remote.server.JsonHttpCommandHandler.handleRequest(JsonHttpCommandHandler.java:190)
at org.openqa.selenium.remote.server.DriverServlet.handleRequest(DriverServlet.java:222)
at org.openqa.selenium.remote.server.DriverServlet.doPost(DriverServlet.java:184)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)
at org.openqa.selenium.remote.server.DriverServlet.service(DriverServlet.java:150)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
at org.seleniumhq.jetty9.servlet.ServletHolder.handle(ServletHolder.java:841)
at org.seleniumhq.jetty9.servlet.ServletHandler.doHandle(ServletHandler.java:543)
at org.seleniumhq.jetty9.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:188)
at org.seleniumhq.jetty9.server.handler.ContextHandler.doHandle(ContextHandler.java:1228)
at org.seleniumhq.jetty9.server.handler.ScopedHandler.nextScope(ScopedHandler.java:168)
at org.seleniumhq.jetty9.servlet.ServletHandler.doScope(ServletHandler.java:481)
at org.seleniumhq.jetty9.server.handler.ScopedHandler.nextScope(ScopedHandler.java:166)
at org.seleniumhq.jetty9.server.handler.ContextHandler.doScope(ContextHandler.java:1130)
at org.seleniumhq.jetty9.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
at org.seleniumhq.jetty9.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132)
at org.seleniumhq.jetty9.server.Server.handle(Server.java:564)
at org.seleniumhq.jetty9.server.HttpChannel.handle(HttpChannel.java:320)
at org.seleniumhq.jetty9.server.HttpConnection.onFillable(HttpConnection.java:251)
at org.seleniumhq.jetty9.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:279)
at org.seleniumhq.jetty9.io.FillInterest.fillable(FillInterest.java:112)
at org.seleniumhq.jetty9.io.ChannelEndPoint$2.run(ChannelEndPoint.java:124)
at org.seleniumhq.jetty9.util.thread.Invocable.invokePreferred(Invocable.java:122)
at org.seleniumhq.jetty9.util.thread.strategy.ExecutingExecutionStrategy.invoke(ExecutingExecutionStrategy.java:58)
at org.seleniumhq.jetty9.util.thread.strategy.ExecuteProduceConsume.produceConsume(ExecuteProduceConsume.java:201)
at org.seleniumhq.jetty9.util.thread.strategy.ExecuteProduceConsume.run(ExecuteProduceConsume.java:133)
at org.seleniumhq.jetty9.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:672)
at org.seleniumhq.jetty9.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:590)
at java.lang.Thread.run(Thread.java:745)
Caused by: org.openqa.selenium.WebDriverException: java.lang.reflect.InvocationTargetException
Build info: version: '3.4.0', revision: 'unknown', time: 'unknown'
System info: host: 'dev-ACME-no', ip: '10.132.0.2', os.name: 'Linux', os.arch: 'amd64', os.version: '3.16.0-4-amd64', java.version: '1.8.0_121'
Driver info: driver.version: unknown
at org.openqa.selenium.remote.server.DefaultDriverProvider.callConstructor(DefaultDriverProvider.java:110)
at org.openqa.selenium.remote.server.DefaultDriverProvider.newInstance(DefaultDriverProvider.java:96)
at org.openqa.selenium.remote.server.DefaultDriverFactory.newInstance(DefaultDriverFactory.java:60)
at org.openqa.selenium.remote.server.DefaultSession$BrowserCreator.call(DefaultSession.java:222)
at org.openqa.selenium.remote.server.DefaultSession$BrowserCreator.call(DefaultSession.java:209)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at org.openqa.selenium.remote.server.DefaultSession$1.run(DefaultSession.java:176)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
... 1 more
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at org.openqa.selenium.remote.server.DefaultDriverProvider.callConstructor(DefaultDriverProvider.java:102)
... 9 more
Caused by: org.openqa.selenium.WebDriverException: unknown error: Chrome failed to start: exited abnormally
(Driver info: chromedriver=2.30.477691 (6ee44a7247c639c0703f291d320bdf05c1531b57),platform=Linux 3.16.0-4-amd64 x86_64) (WARNING: The server did not provide any stacktrace information)
Command duration or timeout: 60.05 seconds
Build info: version: '3.4.0', revision: 'unknown', time: 'unknown'
System info: host: 'dev-ACME-no', ip: '10.132.0.2', os.name: 'Linux', os.arch: 'amd64', os.version: '3.16.0-4-amd64', java.version: '1.8.0_121'
Driver info: driver.version: ChromeDriver
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at org.openqa.selenium.remote.ErrorHandler.createThrowable(ErrorHandler.java:215)
at org.openqa.selenium.remote.ErrorHandler.throwIfResponseFailed(ErrorHandler.java:167)
at org.openqa.selenium.remote.JsonWireProtocolResponse.lambda$new$0(JsonWireProtocolResponse.java:53)
at org.openqa.selenium.remote.JsonWireProtocolResponse.lambda$getResponseFunction$2(JsonWireProtocolResponse.java:91)
at org.openqa.selenium.remote.ProtocolHandshake.lambda$createSession$22(ProtocolHandshake.java:365)
at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193)
at java.util.Spliterators$ArraySpliterator.tryAdvance(Spliterators.java:958)
at java.util.stream.ReferencePipeline.forEachWithCancel(ReferencePipeline.java:126)
at java.util.stream.AbstractPipeline.copyIntoWithCancel(AbstractPipeline.java:498)
at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:485)
at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471)
at java.util.stream.FindOps$FindOp.evaluateSequential(FindOps.java:152)
at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
at java.util.stream.ReferencePipeline.findFirst(ReferencePipeline.java:464)
at org.openqa.selenium.remote.ProtocolHandshake.createSession(ProtocolHandshake.java:368)
at org.openqa.selenium.remote.ProtocolHandshake.createSession(ProtocolHandshake.java:159)
at org.openqa.selenium.remote.HttpCommandExecutor.execute(HttpCommandExecutor.java:142)
at org.openqa.selenium.remote.service.DriverCommandExecutor.execute(DriverCommandExecutor.java:82)
at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:637)
at org.openqa.selenium.remote.RemoteWebDriver.startSession(RemoteWebDriver.java:250)
at org.openqa.selenium.remote.RemoteWebDriver.startSession(RemoteWebDriver.java:236)
at org.openqa.selenium.remote.RemoteWebDriver.<init>(RemoteWebDriver.java:137)
at org.openqa.selenium.chrome.ChromeDriver.<init>(ChromeDriver.java:184)
at org.openqa.selenium.chrome.ChromeDriver.<init>(ChromeDriver.java:148)
... 14 more
13:27:24.924 WARN - Exception: unknown error: Chrome failed to start: exited abnormally
(Driver info: chromedriver=2.30.477691 (6ee44a7247c639c0703f291d320bdf05c1531b57),platform=Linux 3.16.0-4-amd64 x86_64) (WARNING: The server did not provide any stacktrace information)
Command duration or timeout: 60.05 seconds
Build info: version: '3.4.0', revision: 'unknown', time: 'unknown'
System info: host: 'dev-ACME-no', ip: '10.132.0.2', os.name: 'Linux', os.arch: 'amd64', os.version: '3.16.0-4-amd64', java.version: '1.8.0_121'
Driver info: driver.version: ChromeDriver
Respuesta1
El camino hacia la iluminación comenzó cuando se intentó reducir el problema.
Al menos estas partes deben funcionar para que se ejecuten los scripts:
- Selenio y amigos (
webdriverio, ChromeDriver, etc.) - Se deben instalar Chrome y sus dependencias.
- xvfb debe funcionar
- Chrome debe ejecutarse en Xvfb
- Chrome debe ejecutarse de alguna manera en Xvfb cuando se activa a través de Selenium
Para solucionarlo: selenium-standalone startParecía funcionar sin errores, por lo que estaba bien. 2, 3 y 4 parecieron funcionar xvfb-run google-chrome --disable-gpubien. No estoy seguro acerca de 5...
Un puntero que apuntaba en la dirección en la que la combinación Chrome+Selenium no funcionó fue una línea en el resultado:
Chrome failed to start: exited abnormally
Sabemos que Chrome funciona si X está en su lugar. Sabemos que Chrome falla si X no está en su lugar.
Bueno, para ejecutar 5 necesitaba inyectar Xvfb en la mezcla de alguna manera, lo que me dejó dos opciones. Envuelva el proceso de nodo o el proceso de selenio. ¡El primero no funcionó, pero el segundo sí!
En una terminal:
xvfb-run selenium-standalone start
En la segunda terminal:
node /tmp/script.js
Y finalmente obtuve la respuesta correcta.
init ok
Title is: DuckDuckGo
Alguna ayuda de depuración adicional para configurar esto
Vale la pena revisar los rastros de la pila de excepciones de Selenium cuando se intenta depurar lo que está mal.
Puedes estar seguro de que te falta Chrome o que no está instalado cuando recibas esto
Caused by: org.openqa.selenium.WebDriverException: unknown error: cannot find Chrome binary
(Driver info: chromedriver=2.30.477691 (6ee44a7247c639c0703f291d320bdf05c1531b57),platform=Linux 3.16.0-4-amd64 x86_64) (WARNING: The server did not provide any stacktrace information)
Si no tienes la versión correcta de Chrome para Chromedriver, por ejemplo, si solo instalaste Chromium (¡mi caso!), verás este error:
Caused by: org.openqa.selenium.SessionNotCreatedException: session not created exception: Chrome version must be >= 58.0.3029.0
(Driver info: chromedriver=2.30.477691 (6ee44a7247c639c0703f291d320bdf05c1531b57),platform=Linux 3.16.0-4-amd64 x86_64) (WARNING: The server did not provide any stacktrace information)
Asegúrese de que google-chrome-stableesté en el $PATHy de que pueda ejecutarlo correctamente en un sistema sin cabeza.
Más consejos sobre la configuración Verificaresta configuración automatizada. Muchos buenos consejos.