Setup Selenium Grid on RedHat

Install Latest Firefox

Please note that the old version of Firefox installed on RedHat may not support headless well, so we’d better install the latest Firefox.

sudo yum remove firefox
unlink /usr/bin/firefox

cd /usr/local
wget http://ftp.mozilla.org/pub/firefox/releases/81.0/linux-x86_64/en-US/firefox-81.0.tar.bz2
tar xvjf firefox-81.0.tar.bz2
sudo ln -s /usr/local/firefox/firefox /usr/bin/firefox

firefox --version

Install Latest Chrome

wget https://dl.google.com/linux/direct/google-chrome-stable_current_x86_64.rpm
yum -y install redhat-lsb libXScrnSaver
yum -y localinstall google-chrome-stable_current_x86_64.rpm

google-chrome --version

Setup Selenium Grid Server

Download Selenium Grid JAR

wget https://selenium-release.storage.googleapis.com/3.141/selenium-server-standalone-3.141.59.jar

Create hubconfig.json:

{
  "port": 4444,
  "newSessionWaitTimeout": 10000,
  "servlets" : [],
  "withoutServlets": [],
  "custom": {},
  "capabilityMatcher": "org.openqa.grid.internal.utils.DefaultCapabilityMatcher",
  "registry": "org.openqa.grid.internal.DefaultGridRegistry",
  "throwOnCapabilityNotPresent": true,
  "cleanUpCycle": 5000,
  "role": "hub",
  "debug": false,
  "browserTimeout": 60,
  "timeout": 60
}

Create nodeconfig.json

{
  "capabilities":
  [
    {
      "browserName": "firefox",
      "marionette": true,
      "maxInstances": 5,
      "seleniumProtocol": "WebDriver"
    },
    {
      "browserName": "chrome",
      "maxInstances": 5,
      "seleniumProtocol": "WebDriver"
    }
  ],
  "proxy": "org.openqa.grid.selenium.proxy.DefaultRemoteProxy",
  "maxSession": 5,
  "port": -1,
  "register": true,
  "registerCycle": 5000,
  "hub": "http://localhost:4444",
  "nodeStatusCheckTimeout": 5000,
  "nodePolling": 5000,
  "role": "node",
  "unregisterIfStillDownAfter": 60000,
  "downPollingLimit": 2,
  "debug": false,
  "servlets" : [],
  "withoutServlets": [],
  "custom": {},
  "browserTimeout": 60,
  "timeout": 60
}

Create starthub.sh

java -jar selenium-server-standalone-3.141.59.jar -role hub -hubConfig hubconfig.json

Create startnode.sh

Please note that the argument -Dwebdriver.chrome.whitelistedIps= is added in the command line, that allows the Chrome driver to assign a port for the WebDriver.

java -Dwebdriver.chrome.whitelistedIps= -jar selenium-server-standalone-3.141.59.jar -role node -nodeConfig nodeconfig.json

Download Firefox and Chrome WebDriver

wget https://github.com/mozilla/geckodriver/releases/download/v0.27.0/geckodriver-v0.27.0-linux64.tar.gz
tar -zxvf geckodriver-v0.27.0-linux64.tar.gz
chmod +x geckodriver

wget https://chromedriver.storage.googleapis.com/86.0.4240.22/chromedriver_linux64.zip
unzip chromedriver_linux64.zip
chmod +x chromedriver

Start Selenium Grid Server in Background

chmod +x starthub.sh
nohup /root/selenium/starthub.sh > /root/selenium/hub.log 2>&1 &

chmod +x startnode.sh
nohup /root/selenium/startnode.sh > /root/selenium/node.log 2>&1 &

Stop Selenium Grid Server

kill -9 $(ps -aux|grep hubconfig.json | grep -v grep| awk '{print $2}')
kill -9 $(ps -aux|grep nodeconfig.json| grep -v grep| awk '{print $2}')

Configure Selenium Grid on IDA and Enable Headless Mode

Firefox Selenium Grid Configuration

## Supports Firefox and Chrome
arguments:
- "--headless"
## Change windows size
- "window-size=1920,1080"

Chrome Selenium Grid Configuration

Please note that the argument –no-sandbox is added for Chrome, which allows running Chrome by the root user.

## Supports Firefox and Chrome
arguments:
- "--headless"
- "--no-sandbox"
## Change windows size
- "window-size=1920,1080"