Load balancing would fall under "essential" cookies that don't require a permissions. No banner necessary. See GitHub. You can't use the data for other purpos

Load balancing would fall under "essential" cookies that don't require a permissions. No banner necessary. See GitHub. You can't use the data for other purposes though. Tracking without cookies requires consent no matter how you implement it. Claiming it to be essential won't fly if, say your Marketing or sales team has access.