When using Alibaba Cloud SLB, you can set different weights for backend ECS instances. The higher the weight of a backend ECS instance, the more load will be assigned to it. If an SLB instance has 5 ECS instances in the backend server pool, all of which are healthy. Among these 5 ECS instances, the weight of ecs_inst1 is set to 100. Which of the following statements is correct?
In the scenario where the weight of ecs_inst1 is set to 100, without knowing the weight settings of the remaining 4 ECS instances, we can't determine the exact load distribution. The weight of ecs_inst1 alone does not provide enough information to conclude how traffic will be balanced among all 5 instances. Therefore, the correct answer is that we do not know the weight settings of the remaining 4 ECS instances, so we cannot tell what would happen.
C. Based on SLB's working mechanism, approximately 20% of loads will be assigned to ecs_inst1. The weight settings determine the distribution of traffic to backend ECS instances. In this case, you've set the weight of ecs_inst1 to 100, which means it will receive a higher proportion of the traffic compared to the other instances. However, it doesn't mean all traffic will go to ecs_inst1. SLB distributes traffic based on the weight and also takes into account the actual server conditions, such as the health status of the instances. Since you mentioned that all 5 ECS instances are healthy, and assuming no other weights have been explicitly set for the remaining 4 instances, the SLB will distribute approximately 20% of the traffic to ecs_inst1 and distribute the rest evenly among the other instances. This is how SLB's load balancing mechanism typically works with weight settings.
C. Based on SLB's working mechanism, approximately 20% of loads will be assigned to ecs_inst1. The weight settings determine the distribution of traffic to backend ECS instances. In this case, you've set the weight of ecs_inst1 to 100, which means it will receive a higher proportion of the traffic compared to the other instances. However, it doesn't mean all traffic will go to ecs_inst1. SLB distributes traffic based on the weight and also takes into account the actual server conditions, such as the health status of the instances. Since you mentioned that all 5 ECS instances are healthy, and assuming no other weights have been explicitly set for the remaining 4 instances, the SLB will distribute approximately 20% of the traffic to ecs_inst1 and distribute the rest evenly among the other instances. This is how SLB's load balancing mechanism typically works with weight settings.