If you are using a DigitalOcean Kubernetes cluster, please refer to How to Connect to a DigitalOcean Kubernetes Cluster to learn how to connect to your cluster using kubectl. You can read more about installing kubectl in the official documentation.
This setup will use a DigitalOcean Kubernetes cluster, but you are free to create a cluster using another method.
Once we’ve set up the Ingress, we’ll install cert-manager into our cluster to manage and provision TLS certificates for encrypting HTTP traffic to the Ingress. In this guide, we’ll set up the Kubernetes-maintained Nginx Ingress Controller, and create some Ingress Resources to route traffic to several dummy backend services. Ingresses provide a more efficient and flexible alternative to setting up multiple LoadBalancer services, each of which uses its own dedicated Load Balancer. Popular Ingress Controllers include Nginx, Contour, HAProxy, and Traefik. This is accomplished using Ingress Resources, which define rules for routing HTTP and HTTPS traffic to Kubernetes Services, and Ingress Controllers, which implement the rules by load balancing traffic and routing it to the appropriate backend Services. This guide provides an example of deploying Contour in conjunction with Harbor, an open source registry for containers and Helm charts.Kubernetes Ingresses allow you to flexibly route traffic from outside your Kubernetes cluster to Services inside of your cluster. This video also explains blue-green deployments. The Contour Ingress controller has become popular because of features such as the ability to do blue-green deployments using Contour’s IngressRoute. Watch this short video for an Introduction to Ingress. Ingress and Ingress controllers remain an active topic in Kubernetes.
Contour deploys the Envoy proxy as a reverse proxy and load balancer. Ingress, and the Ingress Controller, provide the glue that tie the two together.Ĭontour is an open source Kubernetes Ingress controller that acts as a control plane for the Envoy edge and service proxy (see below). Contour supports dynamic configuration updates and multi-team ingress delegation while maintaining a lightweight profile.Ĭontour is built for Kubernetes to empower you to quickly deploy cloud native applications by using the flexible IngressRoute API. A cluster administrator enables access to the application through the Ingress controller, while the application developer focuses on the application itself. Ingress is an important component of Kubernetes because it cleanly separates an application from how it is accessed. An Ingress controller processes the requests for resources, provides transport layer security (TLS) termination, and performs other functions. An Ingress controller watches for changes to objects in the cluster and then wires together a data path for each request to be resolved. In Kubernetes, Ingress is a set of routing rules that define how external traffic is routed to an application inside a Kubernetes cluster.