There was a change in behaviour for the GUI between HPC 3.1 and HPC 3.2.
Now by default when the host list is displayed:
- the first node is always selected
- using the checkbox to select another node will add the second node but not remove the first one
In order to have one node (that is not the first one in the list) selected for an operation (for example: reinstall), just click on its hostname and it will be selected and the first node will unchecked.
Step 1: open the host view : my first node (compute000) is selected by default; click on the hostname of the node you want to select (or any column, but not the checkbox)
Step 2: apply the operation