How to Configure Kubernetes Client-Go with a Custom Kubeconfig Context?

Using kubectl Contexts in Kubernetes Client-Go

To configure the Kubernetes client-go with a custom kubeconfig context, you can leverage the provided helper functions. Here's how you can achieve this:

<code class="go">import (
    "fmt"

    "k8s.io/client-go/kubernetes"
    "k8s.io/client-go/rest"
    "k8s.io/client-go/tools/clientcmd"
)

// GetKubeClientForContext creates a Kubernetes config and client using the specified kubeconfig context.
func GetKubeClientForContext(context string) (*rest.Config, kubernetes.Interface, error) {
    // Create a Kubernetes client config using the specified context.
    config, err := clientcmd.NewNonInteractiveDeferredLoadingClientConfig(
        &clientcmd.ClientConfigLoadingRules{ExplicitPath: kubeconfig},
        &clientcmd.ConfigOverrides{CurrentContext: context},
    ).ClientConfig()
    if err != nil {
        return nil, nil, fmt.Errorf("could not create Kubernetes config for context %q: %s", context, err)
    }

    // Create a new Kubernetes client using the config.
    client, err := kubernetes.NewForConfig(config)
    if err != nil {
        return nil, nil, fmt.Errorf("could not create Kubernetes client for context %q: %s", context, err)
    }

    // Return the config and the client.
    return config, client, nil
}</code>

By using NewNonInteractiveDeferredLoadingClientConfig with custom context overrides, you can specify the desired kubeconfig context and correctly configure the client-go client to connect to the appropriate Kubernetes cluster.

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