An end-to-end documentation on Grid
Image Courtesy: Boloji.com
To see the documentation related to the Selenium Node, run :
java -jar selenium-server-standalone-3.141.59.jar -role node -help
You should see something like below :
Usage: <main class> [options]
Options:
--debug, -debug
<Boolean> : enables LogLevel.FINE.
Default: false
--version, -version
Displays the version and exits.
Default: false
-browserTimeout
<Integer> in seconds : number of seconds a browser session is allowed to
hang while a WebDriver command is running (example: driver.get(url)). If
the timeout is reached while a WebDriver command is still processing,
the session will quit. Minimum value is 60. An unspecified, zero, or
negative value means wait indefinitely. If a node does not specify it,
the hub value will be used.
-capabilities, -browser
<String> : comma separated Capability values. Example: -capabilities
browserName=firefox,platform=linux -capabilities
browserName=chrome,platform=linux
-cleanUpCycle
<Integer> in ms : specifies how often the hub will poll running proxies
for timed-out (i.e. hung) threads. Must also specify "timeout" option
-custom
<String> : comma separated key=value pairs for custom grid extensions.
NOT RECOMMENDED -- may be deprecated in a future revision. Example:
-custom myParamA=Value1,myParamB=Value2
-downPollingLimit
<Integer> : node is marked as "down" if the node hasn't responded after
the number of checks specified in [downPollingLimit].
-enablePlatformVerification
<Boolean>: Whether or not to drop capabilities that does not belong to
the current platform family. Defaults to true.
-host
<String> IP or hostname : usually determined automatically. Most
commonly useful in exotic network configurations (e.g. network with VPN)
-hub
<String> : the url that will be used to post the registration request.
This option takes precedence over -hubHost and -hubPort options.
-hubHost
<String> IP or hostname : the host address of the hub we're attempting
to register with. If -hub is specified the -hubHost is determined from
it.
-hubPort
<Integer> : the port of the hub we're attempting to register with. If
-hub is specified the -hubPort is determined from it.
-id
<String> : optional unique identifier for the node. Defaults to the url
of the remoteHost, when not specified.
-jettyThreads, -jettyMaxThreads
<Integer> : max number of threads for Jetty. An unspecified, zero, or
negative value means the Jetty default value (200) will be used.
-log
<String> filename : the filename to use for logging. If omitted, will
log to STDOUT
-maxSession
<Integer> max number of tests that can run at the same time on the node,
irrespective of the browser used
-nodeConfig
<String> filename : JSON configuration file for the node. Overrides
default values
-nodePolling
<Integer> in ms : specifies how often the hub will poll to see if the
node is still responding.
-nodeStatusCheckTimeout
<Integer> in ms : connection/socket timeout, used for node "nodePolling"
check.
-port
<Integer> : the port number the server will use.
-proxy
<String> : the class used to represent the node proxy. Default is
[org.openqa.grid.selenium.proxy.DefaultRemoteProxy].
-register
if specified, node will attempt to re-register itself automatically with
its known grid hub if the hub becomes unavailable.
-registerCycle
<Integer> in ms : specifies how often the node will try to register
itself again. Allows administrator to restart the hub without restarting
(or risk orphaning) registered nodes. Must be specified with the
"-register" option.
-remoteHost
<String> URL: Address to report to the hub. Used to override default
(http://<host>:<port>).
-role
<String> options are [hub], [node], or [standalone].
-servlet, -servlets
<String> : list of extra servlets the grid (hub or node) will make
available. Specify multiple on the command line: -servlet
tld.company.ServletA -servlet tld.company.ServletB. The servlet must
exist in the path: /grid/admin/ServletA /grid/admin/ServletB
-timeout, -sessionTimeout
<Integer> in seconds : Specifies the timeout before the server
automatically kills a session that hasn't had any activity in the last X
seconds. The test slot will then be released for another test to use.
This is typically used to take care of client crashes. For grid hub/node
roles, cleanUpCycle must also be set. If a node does not specify it, the
hub value will be used.
-unregisterIfStillDownAfter
<Integer> in ms : if the node remains down for more than
[unregisterIfStillDownAfter] ms, it will stop attempting to re-register
from the hub.
-withoutServlet, -withoutServlets
<String> : list of default (hub or node) servlets to disable. Advanced
use cases only. Not all default servlets can be disabled. Specify
multiple on the command line: -withoutServlet tld.company.ServletA
-withoutServlet tld.company.ServletB