selenium-grid Getting started with selenium-grid What is a Hub & Node?
Example
The Hub
- The Hub is the main engine/central point of the entire configuration, point where all the nodes are connected.
- Hub should run only on a single machine.
- There should only be 1 hub running where all the tests are loaded.
- Tests will be run on the machines where hub is running, but you can see the browsers on the node machines.
The Nodes
- Nodes are the instances (machines) which will execute the tests that are loaded on the hub.
- There are no limitations on Node machines, a user can setup n number of Nodes.
- Nodes can be launched on different machines with different OS and browser combinations.
- Machines running the nodes can be of different/same configurations as of Hub Machine.
