Selenium grid installation and testing (python) with chrome on ubuntu 16.04

selenium-grid.txt

Ubuntu Desktop environment:
* apt-get update && sudo apt-get upgrade
* apt-get install ubuntu-desktop gnome-panel gnome-settings-daemon metacity nautilus gnome-terminal

Setup VNC server environment:
* apt-get install vnc4server
* adduser sanity (passwd: c0ntrail123)
* usermod -G sudo sanity​
As user sanity do the below
* vncserver
* vncserver -kill :1
* cat ~/.vnc/xstartup
#!/bin/sh
# Uncomment the following two lines for normal desktop:
# unset SESSION_MANAGER
# exec /etc/X11/xinit/xinitrc

[ -x /etc/vnc/xstartup ] && exec /etc/vnc/xstartup
[ -r $HOME/.Xresources ] && xrdb $HOME/.Xresources
xsetroot -solid grey
vncconfig -iconic &
x-terminal-emulator -geometry 80x24+10+10 -ls -title "$VNCDESKTOP Desktop" &
x-window-manager &
# Append the below lines to the xstartup
gnome-panel &
gnome-settings-daemon &
metacity &
nautilus &

Selenium Grid:
Install google chrome(any means) and chrome driver.
   21  wget https://chromedriver.storage.googleapis.com/2.45/chromedriver_linux64.zip
   27  unzip chromedriver_linux64.zip
   29  sudo cp chromedriver /usr/bin/
   30  sudo chown root:root /usr/bin/chromedriver
   31  sudo chmod +x /usr/bin/chromedriver

Install selenium server
Download from https://www.seleniumhq.org/download/

Start hub and node from inside the vnc session:
hub:
java -jar selenium-server-standalone-3.141.59.jar -role hub -port 4444 -host 10.84.7.29
nodes:
java -jar selenium-server-standalone-3.141.59.jar -role node -hub http://10.84.7.29:4444/grid/register/

Python interface:
pip install selenium

Test script to validate parallel execution:
from selenium import webdriver
from selenium.webdriver.common.keys import Keys
from selenium.webdriver.chrome.options import Options
chrome_options = Options()
chrome_options.add_argument("--incognito")

driver1 = webdriver.Remote(
   command_executor="http://10.84.7.29:4444/wd/hub",
   desired_capabilities={
            "browserName": "chrome",
        },
   options=chrome_options)
driver2 = webdriver.Remote(
   command_executor="http://10.84.7.29:4444/wd/hub",
   desired_capabilities={
            "browserName": "chrome",
        },
   options=chrome_options)
try:
    driver1.implicitly_wait(30)
    driver2.implicitly_wait(30)
    driver1.set_window_position(0,0)
    driver1.set_window_size(600,600)
    driver2.set_window_position(0,0)
    driver2.set_window_size(600,600)
    driver1.get("http://www.python.org")
    assert "Python" in driver1.title
    driver2.get("http://www.google.com")
    elem1 = driver1.find_element_by_name("q")
    elem2 = driver2.find_element_by_name("q")
    elem1.send_keys("documentation")
    elem2.send_keys("webdriver")
    elem1.send_keys(Keys.RETURN)
    elem2.send_keys(Keys.RETURN)
    assert "No results found." not in driver1.page_source
finally:
    import time; time.sleep(30)
    driver1.quit()
    driver2.quit()