When WLBS is active for both nodes, you can control it by issuing WLBS commands:
keep a node from accepting new connections -> WLBS DRAINSTOP
keep a node from servicing any connections -> WLBS STOP
You can use these to increase or decrease traffic to a given server in the event that you either want to test load or give a server some relief. You could do a WLBS DRAINSTOP on one server and after a while all the traffic would be on the other servers in the WLBS cluster.
Setting the 'host priority' parameter won't keep a host from servicing connections, but will dictate which server picks up a connection if both servers already have the same number of connections.
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