How to Use the Kubernetes Go Client to Retrieve Detailed Pod Information Like \'kubectl get pods\'?

Kubernetes go-client: Fetching Pod Details Like 'kubectl get pods'

To obtain pod details from a Kubernetes cluster using the Kubernetes client-go, follow these steps:

1. Create a Pod Interface: Use the client-go's PodInterface to manage pods in a specific namespace.

   <code class="go">podInterface := client.KubeClient.CoreV1().Pods(namespace)</code>

2. List Pods: Retrieve all pods in the namespace.

   <code class="go">podList, err := podInterface.List(context.TODO(), v1.ListOptions{})</code>

3. Iterate Over Pods: Iterate through the retrieved pod list to extract specific details like name, status, ready state, restarts, and age.

   <code class="go">for _, pod := range podList.Items {
    // Calculate pod age
    age := time.Since(pod.GetCreationTimestamp().Time).Round(time.Second)
   
    // Get pod status
    podStatus := pod.Status
   
    // Accumulate container stats
    var containerRestarts, containerReady, totalContainers int32
   
    for range pod.Spec.Containers {
        // Add restart count from container status
        containerRestarts += podStatus.ContainerStatuses[container].RestartCount
        // Calculate number of ready containers
        if podStatus.ContainerStatuses[container].Ready {
            containerReady++
        }
        totalContainers++
    }
   }</code>

This approach effectively generates a table similar to the output of 'kubectl get pods -n ' with the desired details, including name, ready state, status, restarts, and age of each pod in the selected namespace.

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