Selenium node docker images NODE_MAX_SESSION and NODE_MAX_INSTANCES env variables
As the official docs tell, we need both, if you plan sets the maximum amount of tests that can run at the same time in a node, so:
By default, each image will only allow one slot per container,...this can be configured via environment variables with the environment variable
NODE_MAX_INSTANCES. Don't forget to combine this with the environment variableNODE_MAX_SESSION
NODE_MAX_INSTANCES
NODE_MAX_SESSION
Both needs to be configured for ex :
NODE_MAX_INSTANCES=6 NODE_MAX_SESSION=3runs a chrome node which can run 6 instances of chrome, and a max parallelization of 3
Hope that answers your question