未知错误：DevToolsActivePort文件不存在，在Docker中使用无头机器人框架启动ChromeDriver时

Question

我有机器人框架，它将尝试在无头模式下运行UI测试。但当我们在Docker容器中运行机器人框架时，我们得到了以下错误

WebDriverException：消息：未知错误：Chrome无法启动：异常退出。(未知错误：DevToolsActivePort文件没有exist((进程从chrome位置开始/usr/bin/google chrome不再运行，因此ChromeDriver假设Chrome已经崩溃。(

Dockerfile:

FROM python:3.8
ENV JAVA_OPTS "-Dlog4j.formatMsgNoLookups=true"
ENV LOG4J_FORMAT_MSG_NO_LOOKUPS=true
ENV WAIT_VERSION 2.7.2
#Install Google Chrome
RUN echo 'deb http://dl.google.com/linux/chrome/deb/ stable main' > /etc/apt/sources.list.d/chrome.list
RUN wget -q -O - https://dl-ssl.google.com/linux/linux_signing_key.pub | apt-key add -
RUN set -x && apt-get update && apt-get install -y xvfb google-chrome-stable
#Install Chrome Driver
RUN BROWSER_MAJOR=$(google-chrome --version | sed 's/Google Chrome ([0-9]*).*/1/g') && 
wget https://chromedriver.storage.googleapis.com/LATEST_RELEASE_${BROWSER_MAJOR} -O chrome_version && 
wget https://chromedriver.storage.googleapis.com/`cat chrome_version`/chromedriver_linux64.zip &&  
unzip chromedriver_linux64.zip && 
mv chromedriver /usr/local/bin/
ADD https://github.com/ufoscout/docker-compose-wait/releases/download/$WAIT_VERSION/wait /wait
RUN chmod +x /wait
CMD ["/bin/bash"]

RobotFramework资源详细信息

##### Headless Browser ##########
###### For Headless #######
${chrome options} =     Evaluate    selenium.webdriver.ChromeOptions()
...                     modules=selenium, selenium.webdriver
Call Method    ${chromeOptions}    add_experimental_option    prefs    ${prefs}
Call Method    ${chrome_options}   add_argument    headless
Call Method    ${chrome_options}   add_argument    disable-gpu
Call Method    ${chrome_options}   add_argument    --ignore-certificate-errors
${var}=     Call Method     ${chrome_options}    to_capabilities 
Create Webdriver   driver_name=Chrome   alias=google   chrome_options=${chrome_options}     
Go To   ${environment.url}
Maximize Browser Window 

如何解决此问题？

Answer 1

要克服错误：

WebDriverException: Message: unknown error: Chrome failed to start: exited abnormally. 
(unknown error: DevToolsActivePort file doesn't exist) (The process started from chrome location /usr/bin/google-chrome is no longer running, so ChromeDriver is assuming that Chrome has crashed.)

您可以添加参数--no-sandbox，如下所示：

##### Headless Browser ##########
###### For Headless #######
${chrome options} =     Evaluate    selenium.webdriver.ChromeOptions()
...                     modules=selenium, selenium.webdriver
Call Method    ${chromeOptions}    add_experimental_option    prefs    ${prefs}
Call Method    ${chrome_options}   add_argument    headless
Call Method    ${chrome_options}   add_argument    --no-sandbox   # newly added argument
Call Method    ${chrome_options}   add_argument    disable-gpu
Call Method    ${chrome_options}   add_argument    --ignore-certificate-errors
${var}=     Call Method     ${chrome_options}    to_capabilities 
Create Webdriver   driver_name=Chrome   alias=google   chrome_options=${chrome_options}     
Go To   ${environment.url}
Maximize Browser Window