Adding load balancing
When you install multiple engines and virtual proxies, you must add load balancing to the new nodes and virtual proxies. It is only on the central node that load balancing is automatically added. If you create a node without configuring the virtual proxy, the node will never actually be used. If you create a new virtual proxy, you must configure it by adding load balancing and selecting which nodes that the virtual proxy can forward work to.
The default algorithm used for load balancing is round-robin, where the load is evenly distributed between the available nodes on the multi-node site. However, any subsequent sessions from the same user/client will open on the current engine node, instead of following the round-robin.
Same user/client session is determined by the information contained in the following request headers:
Do the following:
Open the QMC: https://<QPS server name>/qmc
Select Virtual proxies on the QMC start page or from the Start drop-down menu to display the overview.
Select the virtual proxy that you want to add load balancing to.
The virtual proxy properties are shown.
In the Load balancing property, click Add new server node to select which server nodes to add load balancing to.
A dialog opens.
Select nodes from the list.
The dialog closes and the nodes are added in the list of Load balancing nodes on the virtual proxy edit page.
A confirmation dialog is displayed.
Successfully updated is displayed at the bottom of the page.