kubernetes.io/cluster/=shared Step 2: Install cert-managerĬert-manager is used to provision TLS certificates from Let’s Encrypt. Adding the following tags to the public subnet should correct this issue and the NLB will be created.
This is most likely due to the EKS cluster specific tags missing from the public subnets. If the EXTERNAL-IP column shows, then the NLB cannot be created. The NLB DNS address will be seen in the EXTERNAL-IP column. Ingress-nginx-controller-admission ClusterIP 10.100.207.129 NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE This can be checked with the following kubectl command. When the NGINX ingress controller service (ingress-nginx-controller) is created in Amazon EKS, an internet-facing Network Load Balancer (NLB) should also be created, and associated with the public subnets associated with the EKS cluster. To install the controller, run the following command from a terminal: kubectl apply -f Īdditional configuration options for installing the controller can be found at. In our setup, the NGINX ingress controller is used to route traffic to Dex and the dex-k8s-authenticator. Deployment steps Step 1: Install the NGINX ingress controller Finally, you’ll need appropriate access to create and manage Amazon EKS cluster and Kubernetes objects such as Ingresses, ClusterRoles, and ClusterRoleBindings. To follow the instructions used to configure the OIDC integration within Amazon EKS, you’ll need to use Helm and kubectl installed locally. You will also need a basic understanding of Dex and DNS. To follow along with this post, you’ll need a rudimentary understanding of OIDC and OAuth2.0 protocols and JSON Web Tokens (JWT). dex-k8s-authenticatorĭex-k8s-authenticator is a helper web-app that talks to one or more Dex Identity services to generate kubectlcommands for creating and modifying a kubeconfig.
The NGINX ingress controller is an NGINX backed ingress controller that manages external access to HTTP/S services within the cluster. cert-managerĬert-manager is a certificate management tool used to request and automate the renewal of TLS certificates in Kubernetes, including certificates from Let’s Encrypt. A single instance of Dex will be deployed into the master cluster that will service all other components in all clusters including signing the OIDC tokens. Solution components Dexĭex is an OIDC provider that provides connectors for external OAuth providers to obtain an identity in this case, a GitHub application will be used. Access to the Kubernetes API is governed by ClusterRoleBindings and RoleBindings.
#DEX ONLINE LOGIN HOW TO#
Specifically, this blog will describe how to configure Dex with GitHub as your primary IdP. This blog describes how to use Dex with Amazon EKS, a popular OIDC provider that provides connectors for a variety of different OAuth providers. These identities are also logged to Kubernetes audit log, giving InfoSec the ability to ascribe Kubernetes API calls to users who authenticate with an OIDC identity. This gives organizations who were reticent about creating AWS IAM user accounts/roles to their developers, an EKS-native way to grant them access to EKS clusters using an OIDC-compatible identity provider. With OIDC support, customers now have the flexibility to use an OIDC compatible IdP of their choosing. There were alternative approaches like kube-oidc-proxy, which leveraged impersonation but they were often challenging to configure. If you wanted to grant a user access to an EKS cluster, you typically had to create an IAM principle, such as a user or role, and map it to a Kubernetes RBAC group. Before launching this feature, IAM principles and service account bearer tokens were the only authentication methods that Amazon EKS supported. In an earlier post, Paavan Mistry introduced us to the OIDC identity provider (IdP) authentication for Amazon Elastic Kubernetes Service (Amazon EKS), a feature that allows you to use an OIDC identity provider with new or existing clusters. This post was contributed by Márk Sági-Kazár, Jeremy Cowan, and Jimmy Ray.
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