Selenium node runs one test then dies

[Julie Silvestri]

I am trying to set up a selenium node on a vm (Ubuntu Virtual Box), and it works for my first rSpec test, but then automatically switches back to my Mac to do all the rest of the tests. I see an error "Closing connections idle longer than 100 MILLISECONDS", but am not sure where I can change this particular timeout or why it is timing out. Any ideas would be appreciated!

Here is the configuration I am using:

Ubuntu (local ip 10.0.2.15): java -jar selenium-server-standalone-2.41.0.jar -role node -hub http://192.168.1.X:4444/grid/register -debug

Mac (local ip 192.168.1.X): java -jar selenium-server-standalone-2.41.0.jar -role hub -debug -log hub_debug.log

See my RSpec configuration and the hub_debug.log file here:
https://gist.github.com/jsilvestri/89f8cf9fe9d2572f2d39

Thank you!