1.

Explain Selenium Grid architecture.

Answer»

We know Selenium GRID is ONE of the important tools of Selenium suite and it functions on Node and multiple hub basis. LET us see what is Hub and Node? and how it works?

  • The Hub - There is only one Hub called as master and that is a central point of that grid setup. Any grid setup will have only one Hub. Tests that need to be executed should be loaded on HUB. Tests that are loaded on Hub will be executed only on Nodes. Any host machine can be configured as Hub and will co-ordinated test execution on other hosts.
  • The Nodes - Nodes are the machines on which tests are run. Hub will LAUNCH these tests. The Hub can launch one or more Nodes on remote machines or on the same machine where Hub is located. Each node can have DIFFERENT operating systems and different versions of the same browser or different browsers.

You need to configure Hub first and the register nodes with Hub to execute tests.


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