# AzureCertManagerExtensions Methods

- Package: [Aspire.Hosting.Azure.Kubernetes](/reference/api/csharp/aspire.hosting.azure.kubernetes.md)
- Type: [AzureCertManagerExtensions](/reference/api/csharp/aspire.hosting.azure.kubernetes/azurecertmanagerextensions.md)
- Kind: `Methods`
- Members: `1`

Provides AKS-specific overloads for installing cert-manager into an [AzureKubernetesEnvironmentResource](/reference/api/csharp/aspire.hosting.azure.kubernetes/azurekubernetesenvironmentresource.md).

## AddCertManager(IResourceBuilder<AzureKubernetesEnvironmentResource>, string, string?)

- Name: `AddCertManager(IResourceBuilder<AzureKubernetesEnvironmentResource>, string, string?)`
- Modifiers: `extension`
- Returns: `IResourceBuilder<CertManagerResource>`
- Source: [GitHub](https://github.com/microsoft/aspire/blob/becb48e2d61099e35ae336d527d3875e928d6594/src/Aspire.Hosting.Azure.Kubernetes/AzureCertManagerExtensions.cs#L39-L43)

Installs cert-manager into the AKS cluster's underlying Kubernetes environment and returns a typed `Kubernetes.CertManagerResource` that can host issuer resources.

```csharp
public static class AzureCertManagerExtensions
{
    public static IResourceBuilder<CertManagerResource> AddCertManager(
        this IResourceBuilder<AzureKubernetesEnvironmentResource> builder,
        string name,
        string? chartVersion = null)
    {
        // ...
    }
}
```

## Parameters

- `builder` (`IResourceBuilder<AzureKubernetesEnvironmentResource>`)
  The AKS environment resource builder.
- `name` (`string`)
  The Aspire resource name for the cert-manager installation.
- `chartVersion` (`string?`) `optional`
  The cert-manager Helm chart version to install. Defaults to a pinned version validated against this Aspire build.

## Returns

`IResourceBuilder<CertManagerResource>` -- A reference to the `ApplicationModel.IResourceBuilder`1` for chaining.

## Remarks

Delegates to `CertManagerExtensions.AddCertManager` against the underlying [AzureKubernetesEnvironmentResource.KubernetesEnvironment](/reference/api/csharp/aspire.hosting.azure.kubernetes/azurekubernetesenvironmentresource/properties.md), mirroring the pattern used by [AzureKubernetesIngressExtensions.AddHelmChart(IResourceBuilder<AzureKubernetesEnvironmentResource>, string, string, string)](/reference/api/csharp/aspire.hosting.azure.kubernetes/azurekubernetesingressextensions/methods.md#addhelmchart-iresourcebuilder-azurekubernetesenvironmentresource-string-string-string).

## ATS metadata

### ATS export

- Available to Polyglot AppHosts through the Aspire Type System.