Issues while implementing jenkins docker image+chrome+ruby unknown error: Chrome failed to start: crashed (Selenium::WebDriver::Error::UnknownError)

问题

I am trying to setup jenkins using the official jenkins docker image.

Dockerfile

FROM jenkins/jenkins:lts

USER root
RUN apt-get update && apt install -y ruby-full
RUN apt-get install -y curl
RUN apt -y autoremove
RUN curl -sL https://deb.nodesource.com/setup_6.x | bash -
RUN apt-get install -y nodejs
RUN apt-get install -y build-essential
RUN apt install -y wget
RUN gem install --no-ri --no-rdoc --format-executable rake
RUN gem install selenium-webdriver
RUN gem install bundler
RUN npm install -g node-mongo-seeds

#Permissions granted to jenkins user to do a gem install
RUN chown -R jenkins:jenkins /var/lib/gems
RUN apt-get install -y patch ruby-dev zlib1g-dev liblzma-dev
RUN chown -R jenkins:jenkins /usr/local/bin

# We need wget to set up the PPA and xvfb to have a virtual screen and unzip to install the Chromedriver
RUN apt-get install -y wget xvfb unzip

# Set up the Chrome PPA
RUN wget -q -O - https://dl-ssl.google.com/linux/linux_signing_key.pub | apt-key add -
RUN echo "deb http://dl.google.com/linux/chrome/deb/ stable main" >> /etc/apt/sources.list.d/google.list

# Update the package list and install chrome
RUN apt-get update -y
RUN apt-get install -y google-chrome-stable

# Set up Chromedriver Environment variables
ENV CHROMEDRIVER_VERSION 2.35
ENV CHROMEDRIVER_DIR /chromedriver
RUN mkdir $CHROMEDRIVER_DIR

# Download and install Chromedriver
RUN wget -q --continue -P $CHROMEDRIVER_DIR "http://chromedriver.storage.googleapis.com/$CHROMEDRIVER_VERSION/chromedriver_linux64.zip"
RUN unzip $CHROMEDRIVER_DIR/chromedriver* -d $CHROMEDRIVER_DIR

# Put Chromedriver into the PATH
ENV PATH $CHROMEDRIVER_DIR:$PATH

USER jenkins

While running the job the browser won't open and hit the localhost. I tried hitting 'google.com' as well

google-chrome --headless --no-sandbox 'https://www.google.com'

still no success

    Fontconfig warning: "/etc/fonts/fonts.conf", line 100: unknown element "blank"
[0531/130727.949511:ERROR:browser_process_sub_thread.cc(217)] Waited 17 ms for network service

I am not able understand why jenkins user not able to open the browser.

• Google Chrome 74.0.3729.169
• ChromeDriver 2.35.528139 (47ead77cb35ad2a9a83248b292151462a66cd881)
• ruby 2.3.3p222 (2016-11-21) [x86_64-linux-gnu]
• Jenkins 2.164.3

回答1:

This error message...

unknown error: Chrome failed to start: crashed (Selenium::WebDriver::Error::UnknownError)

...implies that the ChromeDriver was unable to initiate/spawn a new WebBrowser i.e. Chrome Browser session.

---

Your main issue is the incompatibility between the version of the binaries you are using as follows:

• You are using chromedriver=2.35
• Release Notes of chromedriver=2.35 clearly mentions the following :

Supports Chrome v62-64

• You are using chrome=74.0
• Release Notes of ChromeDriver v74.0 clearly mentions the following :

Supports Chrome v74

So there is a clear mismatch between ChromeDriver v2.35 and the Chrome Browser v74.0

---

Solution

• Upgrade ChromeDriver to current ChromeDriver v74.0 level.
• Keep Chrome version at Chrome v74 level. (as per ChromeDriver v2.46 release notes)
• Clean your Project Workspace through your IDE and Rebuild your project with required dependencies only.
• If your base Web Client version is too old, then uninstall it and install a recent GA and released version of Web Client.
• Execute your @Test.

回答2:

So as per @DebanjanB comment it resolved the driver issues but as per the new issue of chrome crashing I resolved it by just adding

options = Selenium::WebDriver::Chrome::Options.new
options.add_argument('--headless')
options.add_argument('--disable-gpu')
options.add_argument('--no-sandbox')
d = Selenium::WebDriver.for :chrome, options: options

来源：https://stackoverflow.com/questions/56395728/issues-while-implementing-jenkins-docker-imagechromeruby-unknown-error-chrome