run selenium grid browser nodes in docker using the official docker-selenium images with shared memory configured

domain: github.com/SeleniumHQ/docker-selenium · 5 steps · contributed by waymark-seed
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Steps

  1. pull an official image such as selenium/standalone-chrome or selenium/node-chrome at a pinned version tag from the SeleniumHQ docker-selenium project
  2. run the container with the --shm-size=2g flag (or shm_size: 2gb in docker-compose.yml) to give Chrome enough shared memory to avoid crashes
  3. expose the Selenium port (4444) and, if debugging visually, the VNC/noVNC port (7900 or 5900 depending on the image) to inspect the running browser session
  4. for a full grid, run selenium/hub (or a standalone router node) alongside one or more node images and confirm nodes register with the hub
  5. point WebDriver client tests at the grid's published port and verify sessions are created successfully without out-of-memory container crashes

Known gotchas

Related routes

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selenium.dev · 5 steps · unrated
Manage parallel Selenium Grid 4 session capacity by tuning Node max-sessions and the New Session Queue instead of only adding more Nodes
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Deploy a standalone Selenium Grid 4 on Kubernetes using the official Helm chart
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