linux - [Solved-5 Solutions] How to run Selenium in Xvfb Linux ? - ubuntu - red hat - debian - linux server - linux pc

Error: cannot open display: :0

Open a terminal and run this command xhost +. This commands needs to be run every time you restart your machine.

Additionally make sure in your /etc/environment file there is a line

export DISPLAY=:0.0 

You can use PyVirtualDisplay (a Python wrapper for Xvfb) to run headless WebDriver tests.

#!/usr/bin/env python

from pyvirtualdisplay import Display
from selenium import webdriver

display = Display(visible=0, size=(800, 600))
display.start()

# now Firefox will run in a virtual display. 
# you will not see the browser.
browser = webdriver.Firefox()
browser.get('http://www.google.com')
print browser.title
browser.quit()

display.stop()

You can also use xvfbwrapper, which is a similar module (but has no external dependencies):

from xvfbwrapper import Xvfb

vdisplay = Xvfb()
vdisplay.start()

# launch stuff inside virtual display here

vdisplay.stop()

Use it as a context manager:

from xvfbwrapper import Xvfb

with Xvfb() as xvfb:
    # launch stuff inside virtual display here.
    # It starts/stops in this code block.

The easiest way is probably to use xvfb-run:

DISPLAY=:1 xvfb-run java -jar selenium-server-standalone-2.0b3.jar

Before running the tests, execute:

export DISPLAY=:99
/etc/init.d/xvfb start

And after the tests:

/etc/init.d/xvfb stop

Here you can use init.d file like this:

#!/bin/bash

XVFB=/usr/bin/Xvfb
XVFBARGS="$DISPLAY -ac -screen 0 1024x768x16"
PIDFILE=${HOME}/xvfb_${DISPLAY:1}.pid
case "$1" in
  start)
    echo -n "Starting virtual X frame buffer: Xvfb"
    /sbin/start-stop-daemon --start --quiet --pidfile $PIDFILE --make-pidfile --background --exec $XVFB -- $XVFBARGS
    echo "."
    ;;
  stop)
    echo -n "Stopping virtual X frame buffer: Xvfb"
    /sbin/start-stop-daemon --stop --quiet --pidfile $PIDFILE
    echo "."
    ;;
  restart)
    $0 stop
    $0 start
    ;;
  *)
  echo "Usage: /etc/init.d/xvfb {start|stop|restart}"
  exit 1
esac
exit 0

In my case on CentOS 7:

PIP_PACKAGES="selenium pyvirtualdisplay" 
YUM_PACKAGES="python34-pip httpd firefox xorg-x11-server-Xvfb expect python34-paramiko"

su --command="Xvfb :22 -screen 0 1024x768x16 > /dev/null 2>&1 &" root
export DISPLAY=:22

#!/usr/bin/env python3

from selenium import webdriver
from pyvirtualdisplay import Display

browser = webdriver.Firefox()
browser.get('https://google.com')
if "Google" in browser.title:
    print(browser.title)