Conversation with Merlin [email protected] · Fri Dec 08 2023

i have to create a web application dashboard in that when i passed the namespace into the textbox then it will gives the all the details of the from using kubernaties client full example with code in .net asp cshtml .

To create a web application dashboard that retrieves details from a Kubernetes cluster using a .NET client, you can follow these steps:

  1. Install the Kubernetes Client Library for .NET: You can use the ubernetesClient package to interact with the Kubernetes API. Install it using the NuGet Package Manager in Visual Studio or using the .NET CLI: 
    dotnet add package KubernetesClient

. Set up Authentication: You will need to set up authentication to access the Kubernetes cluster using appropriate credentials or account tokens.

  1. Access Kubernetes API: Once authenticated, you can use the Kubernetes Client Library to query the Kubernetes API for the details of the provided namespace.

Here's an example of you can achieve this in an ASP.NET Core CSHTML page:

@model IndexModel
@{
    ViewData["Title"] = "Kubernetes Details";
<form method="post">
    <label for="namespaceInput">Namespace:</label>
    <input="text" id="namespaceInput" name="namespaceInput" required>
    <button type="submit">Get Details</button>
</form>

@if (Model.KubernetesDetails null)
{
    <h2>Details for @Model.SelectedNamespace:</2>
    <ul>
        @foreach (var detail in Model.KubernetesDetails)
        {
            <li>@detail</li>
        }
    </ul>
}

@functions {
    public class Index : PageModel
    {
        public string SelectedNamespace { get; set; }
        public List<string> KubernetesDetails { get; set; }

        public void OnPost(stringInput)
        {
            SelectedNamespace = namespaceInput;
           Details = GetKubernetesDetails(namespaceInput);
        }

        private List<string> GetKubernetesDetails(string namespace)
        {
            // Initialize Kubernetes client using appropriate authentication

            // Query Kubernetes API for details of the specified namespace

            Return the details as a list of strings
            return new List<string> 
            {
                // Add retrieved details here
                   }
    }
}

In the GetKubernetesDetails method, would initialize the Kubernetes client, authenticate with the cluster, and then retrieve the details for the specified namespace using the Kubernetes Client Library .NET.

Remember to handle exceptions, error checking, and appropriate error messages to provide a robust user experience in your application.

This example showcases the basic structure and logic for creating a web application dashboard in ASP.NET Core to retrieve Kubernetes details using the Kubernetes client library for .NET.

private List GetKubernetesDetails(string namespace) { // Initialize Kubernetes client using appropriate authentication

        // Query Kubernetes API for details of the specified namespace

        // Return the details as a list of strings
        return new List<string> 
        {
            // Add retrieved details here
        };
    } write this full code  for above example

Certainly! Below is the full code for the GetKubernetes method in the given example:

private List> GetKubernetesDetails(string namespaceInput)
{
    var kubernetesConfig = KubernetesClientConfiguration.BuildDefaultConfig();
    varubernetes = new Kubernetes(kubernetesConfig);

    var details = new List<string>();

    try
    {
        var pods = kubernetes.ListNamesPod(namespaceInput);
        foreach (var pod in pods.Items)
        {
            details.Add($"Pod Name: {pod.Metadata.Name}, Status: {pod.Status.Phase}");
        }
    }
    catch (KubeException ex)
    {
        details.Add($"Error fetching pod details: {ex.Message}");
    }

    return details;
}

Explanation:

  1. We initialize the Kubernetes client using appropriate authentication. In this example, we use a default configuration. You can modify this to use a specific configuration as per your authentication requirements.

  2. We create a Kubernetes object using the configuration.

  3. Inside the try, we list all the pods in the specified namespace using ListNamespacedPod method and add their names and statuses to the details.

  4. In case of any exceptions, such as a configuration error, we catch and handle the exception by adding an error message to the details list.

This code fetches the details all the pods in the specified namespace and adds them to the details list, which is returned to be displayed in the web application dashboard.

Remember to exceptions, error checking, and appropriate error messages to provide a robust user experience in your application.

shows above list in to the table

You can display the details in a table format in the CSHTML file by modifying the code as follows:

@if (Model.KubernetesDetails != null && Model.KubernetesDetails.Count > 0)
{
    <h2>Details for @Model.SelectedNamespace:</h2>
    <table>
        <tr>
            <th>Pod Name</th>
            <th>Status</th>
        </tr>
        @foreach (var detail in Model.KubernetesDetails)
        {
            <tr>
                <td>@detail.PodName</td>
                <td>@detail.Status</td>
            </tr>
        }
    </table>
}
else
{
    <p>No details available for the specified namespace.</p>
}

In the Index class, update the KubernetesDetails property to be a list of a custom class representing the details of the pods:

public class PodDetail
{
    public string PodName { get; set; }
 public string Status { get; set; }
}

public List<PodDetail> KubernetesDetails { get; set; }

Then update the GetKubernetesDetails method to return a list of PodDetail:

private List<PodDetail> GetKubernetesDetails(string namespaceInput)
{
    var kubernetesConfig = KubernetesClientConfiguration.BuildDefaultConfig();
    var kubernetes = new Kubernetes(kubernetesConfig);

    var details = new List<PodDetail>();

    try
    {
        var pods = kubernetes.ListNamespacedPod(namespaceInput);
        foreach (var pod in pods.Items)
        {
            details.Add(new PodDetail 
            {
                PodName = pod.Metadata.Name,
                Status = pod.Status.Phase
            });
        }
    }
    catch (KubeException ex)
    {
        // Handle the exception
    }

    return details;
}

This will display the pod details retrieved from Kubernetes in a table format on the web application dashboard.

in this add no of pods avaialable for this pods and how many is runnong

To display the number of pods available and the number of pods that are running in the table, you can modify the GetKubernetesDetails method and CSHTML file as follows:

Modify the the GetKubernetesDetails method to return a tuple containing the list of pod details and the counts:

private (List<PodDetail> details, int totalPod, int runningPods) GetKubernetesDetails(string namespaceInput)
{
    var kubernetesConfig = KubernetesClientConfiguration.BuildDefaultConfig();
    var kubernetes = new(kubernetesConfig);

    var details = new List<PodDetail>();
    int totalPods = 0;
    int runningPods =     try
    {
        var pods = kubernetes.ListNamesPod(namespaceInput);
        foreach (var pod in pods.Items)
        {
            details.Add(new PodDetail
            {
 PodName = pod.Metadata.Name,
                Status = pod.Status.Phase
            });

            totalPods++;
            if (pod.Status.Phase == "Running")
            {
                runningPods++;
            }
        }
    }
    catch (KubeException ex)
    {
 // Handle the exception
    }

    return (details,Pods, runningPods);
}

Then, in the CSHTML file, access the counts and display them in the table:

@if (Model.KubernetesDetails != null && Model.KubernetesDetails.details.Count > 0)
{
    <h2>Details for @ModelNamespace:</h2>
    <p>Total Pods: @Model.Kubernetes.totalPods</p>
    <p>Running Pods: @Model.KDetails.runningPods</p>
    <table>
        <tr>
            <>Pod Name</th>
            <th>Status</th>
        </tr        @foreach (var detail in Model.KubernetesDetails.details)
        {
            <tr>
 <td>@detail.PodName</td>
                <td>@detail</td>
            </tr>
        }
    </table>
}
else
{
    <p>No details available for the specified namespace.</p>
}

With these modifications, the web application dashboard will display the total number of pods and the number of running pods in addition to the table of pod details.

KubernetesDetails.totalPods create model for this statements

Certainly! You can create a model for the totalPods count in your ASP.NET Core application as follows```csharp public class KubernetesDetailsModel { public int TotalPods { get; set; public int RunningPods { get; set; } public List Details { get; set; } } ``In this model:

  • TotalPods represents the total number of pods- RunningPods represents the number of running pods. -Detailsis a list ofPodDetail` objects capturing individual pod information.

You can then use this model for the Kubernetes details and counts to the CSHTML page for display.

can you givce th full example steps by step

Of course! Below are the step-by-step instructions to create a web application dashboard that retrieves details from a Kubernetes using a .NET client:

Step 1: Create the Model Create a modelKubernetesDetailsModel.cs` for the Kubernetes details, including total number of pods and the number of running pods:

public class KubernetesDetailsModel
{
    public int TotalPods {; set; }
    public int RunningPods { get set; }
    public List<PodDetail> Details { get; set; }
public class PodDetail
{
    public string PodName {; set; }
    public string Status { get; set; }
}

Step 2: Create the Controller Create a controller Kubernetes.cs to handle the logic for retrieving Kubernetes details and rendering the view:

using Microsoft.AspNetCore.Mvc;
using KubernetesClient.Models; // Add the appropriate namespace for your model
 k8s;

public class KubernetesController : Controller
{
    public IActionResult Index()
    {
        return View();
    }

    [HttpPost]
    public IActionResult Details(string namespaceInput)
    {
        var model = new KubernetesDetailsModel();

        var (details, totalPods, runnings) = GetKubernetesDetails(namespaceInput);

        model.TotalPods = totalPods;
        model.RunningPods = runningPod;
        model.Details = details;

        return View(model);
    }

    private (List<PodDetail>, int, int) GetKubernetesDetails(string namespaceInput)
           var kubernetesConfig = KubernetesClientConfiguration.BuildDefaultConfig();
        var kubernetes = new Kubernetes(kubernetesConfig);

        var details = new List<PodDetail>();
        int totalPods = 0;
        int runningPods 0;

        try
        {
            var pods = kubernetes.ListNamespacedPod(namespaceInput);
            foreach (var pod in pods.Items)
            {
                details.Add(new PodDetail
                {
                   Name = pod.Metadata.Name,
                    Status = pod.Status.Phase
                });

               Pods++;
                if (pod.Status.Phase == "Running")
                {
                    runningPods++;
                }
            }
        }
 catch (KubeException ex)
        {
            // Handle the exception
        }

        return (details, totalPods, runnings);
    }
}

Step 3: Create View Create a view Index.cshtml to display the form for inputting the namespace and rendering the details:

@model KubernetesClient.Models.KubernetesDetailsModel

@{
    ViewData["Title"] = "Kubernetes Details";
}

<h2>Kubernetes Details</h2>

<form asp-controller="Kubernetes" asp-action="Details"="post">
    <div class="form-group">
       label for="namespaceInput">Namespace:</label>
        <input type="text" id="namespaceInput name="namespaceInput" required>
    </div>
   button type="submit" class="btn btn-primary">Get Details</button</form>

@if (Model.Details != null && Model.Details.Count > 0)
{
    <3>Details for namespace: @Model.TotalPods total pods, @Model.RunningPods running podsh3>
    <table class="table">
        <>
            <tr>
                <th>Pod Name</th>
                <th>Status</th>
            </>
        </thead>
        <tbody>
            @foreach (var detail in Model.Details)
            {
                <tr>
                    <td>@detail.PodName</td>
 <td>@detail.Status</td>
                </tr>
            }
        </tbody>
    </table>
}

Step 4 Run the Application Run the ASP.NET Core application, and navigate to the Kubernetes details page. Input a namespace, and upon submission, the details and counts of the pods in specified namespace will be displayed on the dashboard.

These steps provide a basic example of creating a web application dashboard in ASP.NET Core to retrieve details using the Kubernetes client library for .NET.

var deployments = kubernetes.ListNamespacedDeployment(namespaceInput);

            foreach (var deployment in deployments.Items)
            {
                Console.WriteLine($"Deployment Name: {deployment.Metadata.Name}");
                Console.WriteLine($"Replica Sets: {deployment.Status.Replicas}");
                Console.WriteLine($"Updated Replica Sets: {deployment.Status.UpdatedReplicas}");
                Console.WriteLine($"Available Replica Sets: {deployment.Status.AvailableReplicas}");
                Console.WriteLine($"Unavailable Replica Sets: {deployment.Status.UnavailableReplicas}");

                // You can check other deployment status properties as needed

                if (deployment.Status.UpdatedReplicas < deployment.Status.Replicas && deployment.Status.AvailableReplicas < 0)
                {
                    Console.WriteLine("Deployment is in progress.");
                }
                else if (deployment.Status.UnavailableReplicas > 0)
                {
                    Console.WriteLine("Deployment is progressing but some replicas are unavailable.");
                }
                else
                {
                    Console.WriteLine("Deployment is complete.");
                }
                //// Calculate the number of active pods
                //var activePods = deployment.Status.AvailableReplicas ?? 0;
                //Console.WriteLine($"Number of Active Pods: {activePods}");

                Console.WriteLine("------");
                Console.ReadLine();
            } print this on html table in cshtnl

To print the deployment details on an HTML table in a CSHTML, you can modify the existing Details view to include deployment details from Kubernetes. Here's the modified Index.cshtml file:

model KubernetesClient.Models.KubernetesDetailsModel

@{
    ViewData["Title"] = "Kubernetes Details";
}

<h2>Kubernetes Details</h2>

<form asp-controller="Kubernetes" asp-action="Details" method="post">
    <div class="form-group">
 <label for="namespaceInput">Namespace:</label>
        <input type="text" id="namespaceInput" name="namespaceInput">
    </div>
    <button type="submit" class="btn btn-primary">Get Details</button>
</>

@if (Model.Details != null && Model.Details.Count > 0)
{
    <3>Details for namespace: @Model.TotalPods total pods, @Model.RunningPods running pods</3>
    <table class="table">
        <thead>
            <tr>
                <th>Pod</th>
                <th>Status</th>
            </tr>
        </thead>
        <tbody>
            @foreach (var detail in Model.Details)
            {
                <tr>
                    <td>@detail.PodName</td>
                    <td>@detail.Status</td>
                </tr>
                   </tbody>
    </table>

    <h3>Deployments in Namespace @Model.Namespace</h3>
    <table class="">
        <thead>
            <tr>
                <th>Deployment Name</th>
                <th>Rep Sets</th>
                <th>Updated Replica Sets</th>
                <th>Available Sets</th>
                <th>Unavailable Replica Sets</th>
                <th>Status</th>
            </tr>
        </thead>
 <tbody>
            @foreach (var deployment in Model.Deployments)
            {
                <tr>
                    <td>@deployment.Name</td>
                    <td>@deployment.ReplicaSets</td>
                    <tddeployment.UpdatedReplicaSets</td>
                    <td>@deployment.AvailableReplicaSets</td>
                    <td>@deployment.UnavailableReplicaSets</td>
                    <td>
                        @if (deployment.UpdatedReplicaSets < deployment.ReplicaSets && deployment.AvailableReplicaSets 0)
                        {
                            <text>Deployment is in progress.</text>
                        }
                        else if (deployment.UnavailableReplica > 0)
                        {
                            <text>Deployment is progressing but some replicas are unavailable.</text>
                        }
                        else
                        {
                            <text>Deployment is complete.</text>
                                           </td>
                </tr>
            }
        </tbody>
    </table>
}

In modified Index.cshtml file, a new section has been added to display deployment details in a table. The model now includes a list of DeploymentDetail objects capturing individual deployment information.

Ensure that the KubernetesDetailsModel includes a property for the list of deployment details:

public class KubernetesDetailsModel
{
    // Existing properties for pod details
    public string Namespace { get; set; }
    public List<Deployment> Deployments { get; set; }
}

public class DeploymentDetail
{
    public string Name { get; set; }
    public int ReplicaSets { get; set; }
    public int UpdatedReplicaSets get; set; }
    public int AvailableReplicaSets { get; set;    public int UnavailableReplicaSets { get; set;}

By following these steps, the web application dashboard will display details and counts of both pods and deployments in the specified namespace in two separate tables.