I/O exception (java.net.NoRouteToHostException) caught when processing request to {}->http://*IPAddress*:5555: No route to host

I am having this issue with Selenium Grid, first time I set up a Grid

I start my Selenium hub on a Linux by this command: java -jar /opt/selenium-server/selenium-server-standalone-2.48.2.jar -role hub -port 4444 &

it is successful:

Nodes should register to http://10.0.50.34:4444/grid/register/ Selenium Grid hub is up and running

Then I register my node on a VM Windows to this hub by: java -Dwebdriver.ie.driver=C:\Selenium\IEDriverServer.exe -jar selenium-server-standalone-2.48.2.jar -role node -hub http://10.0.50.34:4444/grid/register/

The node says it’s registered to the hub and is ready to use

But then, at the hub, I got this exception:

Registered a node http://10.211.55.3:5555 I/O exception (java.net.NoRouteToHostException) caught when processing request to {}->http://10.211.55.3:5555: No route to host Retrying request to {}->http://10.211.55.3:5555 I/O exception (java.net.NoRouteToHostException) caught when processing request to {}->http://10.211.55.3:5555: No route to host Retrying request to {}->http://10.211.55.3:5555 I/O exception (java.net.NoRouteToHostException) caught when processing request to {}->http://10.211.55.3:5555: No route to host Retrying request to {}->http://10.211.55.3:5555 Marking the node http://10.211.55.3:5555 as down: cannot reach the node for 2 tries

[ddavison]

are you using aws? if so, are your nodes behind a VPC?

if both answers are “yes”, then you need to double check the security groups, and make sure that they allow networking to AND from that port.

[bagrip]

@louis57 @ddavison I am having this issue when I try to connect nodes from other linux host on GCP. What network changes we need to make it to work?