selenium-grid

I can't find any information on how to set this up, but it seems like a pretty basic concept, so I'm sure there's an answer out there. I know how to run protractor on different browsers by setting the browserName property of the capabilities object in the config. And that's working great. I can set it to 'chrome' or 'firefox' or whatever I need and it runs just as expected. But the only way to run a single test suite against multiple browsers (as far as I know) is to create separate config files, each with a different browserName and then run each browser with its own config. This works, but

I use Nightwatch-Cucumber based on Nightwatch.js to automate my tests. And now I want to use Selenium Grid with a Selenium hub and several Selenium nodes to execute my tests. These are my current dependencies I actually use: "devDependencies": { "chromedriver": "2.37.0", "cucumber": "3.0.2", "geckodriver": "1.11.0", "nightwatch": "0.9.19", "nightwatch-cucumber": "9.0.0", "selenium-server-standalone-jar": "3.9.1", }, And this is my nightwatch.conf.js : const config = { globals_path: "globals.js", output_folder: "reports", custom_commands_path: "commands", // custom_assertions_path: 'assertions'

I was wondering if anybody could shed some light on a Selenium question that has been giving us a bit of head scratching. We're confused on meaning of MaxSession and MaxInstances of Selenium Grid. We think that the MaxSession is the total number of test sessions that can run on a single node. And we also think that the MaxInstances is the total number of browsers that a test can open. Or is MaxInstances the total number of browsers available to the node? The command that we are using is: java -Xrs -jar selenium-server.jar -role node -port 44506 -hub http://localhost:44500 /grid/register