1. How do I configure a kubernetes cert-manager.io clusterissuer with Pulumi?

    TypeScript

    To configure a Kubernetes cert-manager.io ClusterIssuer using Pulumi, you can use the Pulumi Kubernetes Crosswalk library. In this particular case, we'll create a Let's Encrypt ClusterIssuer, which is designed to automatically provision and manage SSL/TLS certificates for your Kubernetes services.

    Here is a TypeScript example of how to accomplish your requirement:

    import * as k8s from "@pulumi/kubernetes"; import * as pulumi from "@pulumi/pulumi"; // Creating a new provider so that we can configure the Kubernetes version let provider = new k8s.Provider("provider", {enableDryRun: true}); // ClusterIssuer for Let's Encrypt const letsEncryptIssuer = new k8s.apiextensions.CustomResource("letsencrypt-prod", { apiVersion: 'cert-manager.io/v1', kind: 'ClusterIssuer', metadata: { }, spec: { acme: { server: 'https://acme-v02.api.letsencrypt.org/directory', email: 'foo@example.com', // substitute with your email privateKeySecretRef: { name: 'letsencrypt-prod' }, solvers: [{ http01: { ingress: { class: 'nginx' } } }], }, privateKey: {algorithm: "RSA"}, } }, { provider: provider });

    Explanation:

    • In this code, we're creating a new Pulumi Kubernetes Provider. The 'enableDryRun' field is set to true to allow planning changes without executing them.
    • We then create a ClusterIssuer for cert-manager.io using new k8s.apiextensions.CustomResource(). A ClusterIssuer resource is a namespaced resource, and it is used to help request certificates that can be used in this namespace.
    • The spec field defines the issuer configuration: the acme section is for configuring the ACME issuer, server is the ACME server's URL, email is the email for account registration and notifications, privateKeySecretRef is a Secret resource that will store the automatically generated ACME account's private key.
    • The solvers section is used to configure ACME challenge providers, which are used to prove that you have control over the DNS for the domain names in your certificate request. In this case, we're using the HTTP01 challenge type, which requires you to prove that you control the HTTP port 80 for your domain. It does this using an 'nginx' Ingress controller.
    • The privateKey section indicates that we desire an RSA private key.

    Please remember to provide your own email address in the above code.

    Pulumi uses new CustomResource() to manage Kubernetes resources that do not have pre-defined classes in the Pulumi Kubernetes SDK. A CustomResource represents an instance of a singular Kubernetes Custom Resource Definition (CRD). It is an 'instance' in the same way that a Pod is a singular instance of a Pod definition. The apiextensions package provides this CustomResource functionality.


  2. Rewrite this program in C#

    C#

    Certainly, here is the Pulumi C# program that mirrors the functionality of the TypeScript program you've provided. It sets up a Kubernetes ClusterIssuer for Let's Encrypt using Kubernetes Provider with the enableDryRun option enabled.

    using Pulumi; using Pulumi.Kubernetes.ApiExtensions; using Pulumi.Kubernetes.Types.Inputs.ApiExtensions.V1; using Pulumi.Kubernetes.ApiExtensions.V1; using Pulumi.Kubernetes.Core.V1.Inputs; using Pulumi.Kubernetes.Types.Inputs.CertManager.Io.V1; using Pulumi.Kubernetes; class MyStack : Stack { public MyStack() { // Creating a new provider so that we can configure the Kubernetes version var provider = new Pulumi.Kubernetes.Provider("provider", new Pulumi.Kubernetes.ProviderArgs { EnableDryRun = true, }); // ClusterIssuer for Let's Encrypt var letsEncryptIssuer = new CustomResource("letsencrypt-prod", new CustomResourceArgs { ApiVersion = "cert-manager.io/v1", Kind = "ClusterIssuer", Metadata = new ObjectMetaArgs { }, Spec = new Union<object, ClusterIssuerSpecArgs>(new ClusterIssuerSpecArgs { Acme = new AcmeClusterIssuerArgs { Server = "https://acme-v02.api.letsencrypt.org/directory", Email = "foo@example.com", // substitute with your email PrivateKeySecretRef = new SecretKeySelectorArgs { Name = "letsencrypt-prod" }, Solvers = new AcmeClusterIssuerSolverArgs[] { new AcmeClusterIssuerSolverArgs { Http01 = new Http01ClusterIssuerSolverArgs { Ingress = new Http01ClusterIssuerSolverIngressArgs { Class = "nginx" } } } }, }, PrivateKeyAlgorithm = "RSA", }), }, new CustomResourceOptions { Provider = provider }); } } class Program { static Task<int> Main(string[] args) => Deployment.RunAsync<MyStack>(); }

    This C# program uses Pulumi's Kubernetes SDK to create a ClusterIssuer for Let's Encrypt. It configures a Kubernetes provider to allow dry running operations to preview changes without making actual changes to the cluster. The email provided in letsEncryptIssuer should be replaced with a valid email address for notifications from Let's Encrypt.


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