Selenium plugin "couldn't register this node : Hub is down or not responding: Connect to ... failed: Connection refused"

[Julien Breton]

Hello,

I use the Selenium plugin of Jenkins.

On my Jenkins master (Ubuntu) I created a slave. 

This slave is launched by JNLP on a VM (VirtualBox Ubuntu).

The communication between the master and the slave is OK.

I created a Selenium node configuration.

When I go to the Selenium Grid on Jenkins I see : "No RCs have checked in yet. Have you started some slaves?"

When I watch the logs of the slave I see : "09:37:22.618 INFO - couldn't register this node : Hub is down or not responding: Connect to ... failed: Connection refused"

The firewall is off.

I decided to test Selenium Grid without Jenkins. I launch manually the Selenium hub on my computer and the Selenium node on my VM and it's work perfectly.

So I supposse it's not a network problem but a Jenkins configuration problem.

I tried with a Windows 8 and a VM Ubuntu and I have the same "error couldn't register this node...".

When I do this command : nmap -p 4444 -sT IPmaster I get :

Port 4444/tcp State Closed Service krb524 

Closed = nothing uses this port.

If I launch the same command when I launch the Selenium hub manually (without Jenkins), the port is openned.

Wat kind of Jenkins slave I should creat?

Do you think there is an issue wirth the Selenium plugin?

Thanks for your help.

Julien

[Julien Breton]

Don't creat Jenkins slave and it's work.