To minimize the number of ALBs in your architecture, you can use the AWS Load Balancer Controller to group Ingresses. You can reduce costs by sharing ALBs across multiple Ingresses, thereby minimizing the number of ALBs needed. Having a separate load balancer for each Service may quickly become too expensive. This can lead to increased costs since each ALB incurs an hourly charge. The controller creates an Application Load Balancer (ALB) for each Ingress, which can result in a higher number of load balancers than necessary. Separating Ingress resources is a good practice because it allows teams to modify their ingress resources without affecting traffic routing for other applications in the cluster.Īlthough using the AWS Load Balancer Controller for ingresses can be beneficial however, there’s a disadvantage to this approach. Applications typically include Ingress resource definition in deployment artifacts (along with Deployments, Services, Volumes, etc.) since they contain application-specific routing rules. In such cases, it may be necessary to use multiple Ingress resources to manage external access to the services. ![]() Each service may have different requirements for external access, routing rules, Secure Sockets Layer (SSL)/ Transport Layer Security (TLS) termination, and so on. In a microservice architecture, it’s common to have multiple services deployed within a single Kubernetes cluster. The AWS Load Balancer controller provisions and configures an ALB on your behalf whenever you create an Ingress. It acts as a layer 7 (HTTP/HTTPS) reverse proxy and allows you to route traffic to different services based on the requested host and URL path. In Kubernetes, Ingress is an API object that provides an external, load-balanced IP address to access the services in a cluster. Kubernetes ingress and Application Load Balancer The AWS Load Balancer Controller automates the management of ALBs and NLBs’ lifecycle and configuration as you deploy workloads in your cluster. And Application Load Balancer (ALB) is designed to handle web traffic and is optimized to handle layer 7 (HTTP and HTTPS) traffic. Network Load Balancer (NLB) is designed to handle high amounts of traffic and is optimized to handle layer 4 (Transmission Control Protocol (TCP) and User Datagram Protocol (UDP)) traffic. Both methods rely on AWS Elastic Load Balancing under the hood. Kubernetes Service of type LoadBalancer or Ingress resources. ![]() Kubernetes has two ways to expose Services to clients external to the cluster. In this post, we show how you can reduce costs by using Ingress Grouping and integrate existing load balancers using target group binding. Based on our conversations with customers, we identified two AWS Load Balancer Controller features that need further explanation. It allows you to configure and manage load balancers using Kubernetes Application Programming Interface (API). AWS Load Balancer Controller is a Kubernetes controller that integrates Application Load Balancers (ALB) and Network Load Balancers (NLB) with Kubernetes workloads.
0 Comments
Leave a Reply. |