Elastic Load Balancer and Auto Scaling¶
简单来说 ELB 就是一个 host:port/path
到多个具体的 EC2 的 host:port
的映射.
Concepts:
Listener:
Rules:
Health Check:
Target and Target Group.
Load Balancer Types:
Application Load Balancer: HTTP/HTTPS, 比如 /picture 则送到 图像服务器, /request 则送到 App 服务器
Network Load Balancer: TCP/IP, 比如 :80 则送到 图像服务器, :8080 则送到 视频服务器
Classic Balancer: TCP/SSL or HTTP/HTTPS, Classic Load Balancer currently require a fixed relationship between the load balancer port and the container instance port.
Reference:
Load Balancer Types: https://docs.aws.amazon.com/AmazonECS/latest/developerguide/load-balancer-types.html