Selenium Grid - Installation

As an automation tester, I want to execute my UI test script on remote browser. To do that, I need to install Selenium Grid which help me to execute my test script easily throw remote browsers.

Install Selenium Grid on Docker

To install Selnium Grid on Docker, we have to install Docker first. After that, we can easily install Selenium Grid by Docker Compose:

• Create docker-compose.yml file with content (Or download here):

version: "3"
services:
  chrome:
    image: selenium/node-chrome:latest
    volumes:
      - /dev/shm:/dev/shm
    depends_on:
      - selenium-hub
    environment:
      - SE_EVENT_BUS_HOST=selenium-hub
      - SE_EVENT_BUS_PUBLISH_PORT=4442
      - SE_EVENT_BUS_SUBSCRIBE_PORT=4443
      - SE_NODE_OVERRIDE_MAX_SESSIONS=true
      - SE_NODE_MAX_SESSIONS=10

  firefox:
    image: selenium/node-firefox:latest
    volumes:
      - /dev/shm:/dev/shm
    depends_on:
      - selenium-hub
    environment:
      - SE_EVENT_BUS_HOST=selenium-hub
      - SE_EVENT_BUS_PUBLISH_PORT=4442
      - SE_EVENT_BUS_SUBSCRIBE_PORT=4443
      - SE_NODE_OVERRIDE_MAX_SESSIONS=true
      - SE_NODE_MAX_SESSIONS=10     
  edge:
    image: selenium/node-firefox:latest
    volumes:
      - /dev/shm:/dev/shm
    depends_on:
      - selenium-hub
    environment:
      - SE_EVENT_BUS_HOST=selenium-hub
      - SE_EVENT_BUS_PUBLISH_PORT=4442
      - SE_EVENT_BUS_SUBSCRIBE_PORT=4443
      - SE_NODE_OVERRIDE_MAX_SESSIONS=true
      - SE_NODE_MAX_SESSIONS=10   
 
  selenium-hub:
    image: selenium/hub:latest
    container_name: selenium-hub
    ports:
      - "4442:4442"
      - "4443:4443"
      - "4444:4444"

• Open commandline and access to folder contain the docker-compose.yml file and execute the command

docker-compose up

• After the command is finished, Open browser (Chrome browser) and access URL: localhost:4444. The Selenium Hub Site is expected to display.