java -jar selenium-server-standalone-2.53.1.jar -role hub -hubConfig hubconfig.json-it's a java program looks like jar file
-we run this jar from 2 roles: hub and node
-hub receives commands Webdriver object of the client
-then hub is looking for available nodes
for execution.
-nodes are executing testsWhat is a node in Selenium Grid?
Node is the machine which is attached to the hub.
There can be multiple (preferably) nodes in Selenium Grid.
Selenium Grid uses a hub-node concept where
you only run the test on a single machine
called a hub, but the execution will be done
by different machines called nodes.
RemoteWebDriver driver=new RemoteWebDriver (new URL(hubIP), capability);-we run this jar from 2 roles: hub and node
-hub receives commands Webdriver object of the client
-then hub is looking for available nodes
for execution.
-nodes are executing tests{
"port": 4444,
"newSessionWaitTimeout": -1,
"servlets" : [],
"withoutServlets": [],
"custom": {},
"capabilityMatcher": "org.openqa.grid.internal.utils.DefaultCapabilityMatcher",
"registryClass": "org.openqa.grid.internal.DefaultGridRegistry",
"throwOnCapabilityNotPresent": true,
"cleanUpCycle": 5000,
"role": "hub",
"debug": false,
"browserTimeout": 0,
"timeout": 1800
}