Concurrent Web Scraping with Selenium Grid and Docker Swarm

Check out the blog post.

1. Fork/Clone

2. Create and activate a virtual environment

3. Install the requirements

4. Sign up for Digital Ocean and generate an access token

5. Add the token to your environment:

   (env)$ export DIGITAL_OCEAN_ACCESS_TOKEN=[your_token]

6. Spin up four droplets and deploy Docker Swarm:

   (env)$ sh project/create.sh

7. Run the scraper:

   (env)$ docker-machine env node-1
   (env)$ eval $(docker-machine env node-1)
   (env)$ NODE=$(docker service ps --format "{{.Node}}" selenium_hub)
   (env)$ for i in {1..8}; do {
            python project/script.py ${i} $(docker-machine ip $NODE) &
          };
          done

8. Bring down the resources:

   (env)$ sh project/destroy.sh