Most Advanced Clustering chassis are equipped with a large locater LED on the front that can be used to easily identify a node when it’s turned on. If you’re remotely attempting to notify a technician as to which compute node needs work, you can simply run the following command from your head node:

$ act_locate -n <hostname> on
CODE

When the node has been located, you can turn it back off by running:

$ act_locate -n <hostname> off
CODE