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kubernetes-client / csharp

Officially supported dotnet Kubernetes Client library
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Cannot connect to Azure kubernetes cluster using c# sdk #1480

Open Ranjit-Kumar-Konjeti opened 6 months ago

Ranjit-Kumar-Konjeti commented 6 months ago

Describe the bug A clear and concise description of what the bug is.

Kubernetes C# SDK Client Version e.g. 12.1.1

Server Kubernetes Version e.g. 1.25.5

Dotnet Runtime Version e.g. net6

To Reproduce Following this doc: https://github.com/kubernetes-client/csharp/blob/master/README.md var namespaces = client.CoreV1.ListNamespace(); foreach (var ns in namespaces.Items) { Console.WriteLine(ns.Metadata.Name); var list = client.CoreV1.ListNamespacedPod(ns.Metadata.Name); foreach (var item in list.Items) { Console.WriteLine(item.Metadata.Name); } }

The above code does not work on the line : var namespaces = client.CoreV1.ListNamespace(); Code/visual studio 2022 hangs there I am using this c# kubernetes client library with client.CoreV1.ListNamespace(); I tried setting KUBECTL_PROXY and updating the host to http: //proxyip:8001 and I am not using kube login. code execution stops at the above line and my visual studio 2022 hangs and I see messages thread exited in the output window. I can get all the details by connecting to cluster using kubectl commands in the terminal window. but not through c# libraray.

Expected behavior expect to list namespaces

KubeConfig normal AKS kube config file , which I can be able to connect using kubectl

Where do you run your app with Kubernetes SDK (please complete the following information):

Additional context Add any other context about the problem here.

tg123 commented 6 months ago

could you please paste any error you saw?

Ranjit-Kumar-Konjeti commented 6 months ago

I do not see any error, the code just hangs and I just see messages with thread exited in output window

tg123 commented 6 months ago

kubelogin in kubeconfig?

Ranjit-Kumar-Konjeti commented 6 months ago

kuebconfig

tg123 commented 6 months ago

i mean are you using kubelogin? you can check kubeconfig

most likely caused by waiting for stdin

Ranjit-Kumar-Konjeti commented 6 months ago

I am not using kubelogin. I am just using kubeconfig to connect to cluster and check the namespace

Ranjit-Kumar-Konjeti commented 6 months ago

what should i do if the process is waiting for stdin? I verified there is no kubelogin in kubeconfg file

tg123 commented 6 months ago

could you please share your kubeconfig? remove all sensitive info before paste

Ranjit-Kumar-Konjeti commented 6 months ago

apiVersion: v1 clusters:

Ranjit-Kumar-Konjeti commented 6 months ago

any update here ? @tg123

tg123 commented 6 months ago

cant repro, could you please do a dump to see what stuck?

im2geek4you commented 4 months ago

I'm having similar problem . Trying to get a list of namespaces of a microk8s remote server. Using code from example in project page:

var config = KubernetesClientConfiguration.BuildConfigFromConfigFile(@"C:\...\bin\Debug\K8s\config"); var client = new Kubernetes(config); var namespaces = client.CoreV1.ListNamespace();

It just hangs with no error in that last line of code.

Tried in .net7 and .net framework 4.8 (classic lib) versions. Same thing on both. Also tried with multiple servers running microk8s 1.26, same thing on all of them. After further analysis using wireshark I can see it connects to remote microk8s server and exchanges about 200KB of data, then client side (c# app) starts to send TCP ZeroWindow messages, indicating it cannot process any more data...

Ranjit-Kumar-Konjeti commented 4 months ago

exactly same place where my code is stuck too. I am totally blocked by this.

tg123 commented 4 months ago

please see #1523, i added an example and the code was used for long time in production env

nithinbandaru1 commented 4 months ago

@tg123 The example you provided is using command: {kubelogin}. Here the scenario looks different.

k8s-triage-robot commented 1 month ago

The Kubernetes project currently lacks enough contributors to adequately respond to all issues.

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/lifecycle stale

k8s-triage-robot commented 1 week ago

The Kubernetes project currently lacks enough active contributors to adequately respond to all issues.

This bot triages un-triaged issues according to the following rules:

You can:

Please send feedback to sig-contributor-experience at kubernetes/community.

/lifecycle rotten

nithinbandaru1 commented 1 week ago

Well this issue make this software un-usable for like heavy number of users now a days. This fix is quite important!!

treyhendon commented 1 week ago

I've used this SDK in AKS for years with no issues creating my client - starting back in .net 5, through .net 6, and now .net8.

My only difference to building the config from file is that I don't put my path explicitly in as a parameter, I allow the system default kube context to be passed in (which I think is the same file referenced earlier in this thread).

My app has env var flags to flip from in-cluster to local file, so it's in a helper, but here's the code that loads the config from kube context (for local debugging primarily): https://github.com/RedSailTechnologies/kube-status/blob/953045099095a75a3a5467dfbfdc30dcb02bf7df/src/Helper.cs#L42