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Karbon Kubernetes Service

Get a production-ready Kubernetes Cluster up and running in 20 minutes

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Backing Up Karbon Kubernetes clusters with Velero and Nutanix Objects

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Latest Nutanix Karbon How-To Videos

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Tillerless Helm on Nutanix Karbon

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Karbon Airgap (dark site) FAQ and Guide

FAQs What is the Airgap feature? Airgap feature is useful for customers in a dark site environment without Internet access or with relatively low Internet bandwidth that would like to use Karbon. Up until the introduction of the Airgap feature, Karbon was only available with sites connected to the I...

You created a Kubernetes cluster, now what? Download Kubeconfig

The Kubeconfig is a configuration file for running kubectl commands against the deployed Kubernetes cluster. To deploy applications on your cluster using kubectl, download the Kubernetes cluster configuration file (Kubeconfig) to your host. The Kubeconfig token expires after 24 hours. This is a sec...

Use internal ca certificate chain on Karbon

Hi, My company have a internal CA certificate chain and I need to install the internal ca.crt on Karbon, it’s possible? Use case, install a pod using kubectl from a internal registry are not possible due they didn’t know the root CA authority installed at the registry server. Anibal

Karbon Nodes TimeZone

Hi all We have karbon clusters running in our Nutanix environment, and I noticed the timezone in the Karbon cluster is not the same as that in other VMs on the Nutanix cluster. The time zone set for the Nutanix cluster is SAST (UTC +2), and the Karbon VMs timezone is UTC (UTC +0). The UTC+0 timez...

Manually adjust the kube-apiserver?

Hi, It’s possible to manually adjust the file /var/nutanix/etc/kubernetes/manifests/kube-apiserver.yaml and apply this update into the kubernetes cluster? I tried to adjust and after run: sudo systemctl daemon-reload && sudo systemctl restart kubelet-master But when I describe the kube-a...

Enable PodPreset

Hi, Someone know if we can enable PodPreset on the Karbon? (https://kubernetes.io/docs/concepts/workloads/pods/podpreset/#enable-pod-preset) Basically my cluster are under a Proxy and I can’t deploy application under Pod because they need to access the internet, with the PodPreset I can configure...

Renewing cluster kubeconfig from the command line

Just wanted to share how we are renewing the kubeconfig from the command line. Background: In our organization it was considered a bit clumsy to download the kubeconfig from the Karbon UI. We love the command line and wanted a quick’n’easy way to renew the authentication token. The solution: We crea...

Karbon API Deployment - Autentification Error

Hi all, I tried to deploy a Karbon Development Cluster by using Karbon API, but I encounter an error with authentication. {"message_list":{"Unauthorized":"Failed to get authentication info"},"status_code":401} The command for calling Karbon API is : curl -k -X POST -d @create-cluster-dev.js...

Karbon integration with GitLab

Hi, someone have experience integrating GitLab with Karbon? Basically I’m looking for automatic deployment from gitlab to karbon.

Karbon deployment with nvidia drivers

Today Karbon deploy K8s cluster (as a service) without extra features. We are using GPU pass-through, so when we get bare k8s cluster there are need for extra deployments (manually) just to make GPU accessible as a resource to K8s-cluster. anything in road map for dealing with this? desired state i...

Karbon minimum requirement

can someone help me to modified worker spec, karbon worker need 8vcpu for minimum requirement and 8gb memory, can someone help me how to modified minimum requirement? maybe can we change to 4gb memory only?

Does Karbon support mixed node (linux and windows) clusters?

Does Karbon support a cluster with both Linux and Windows nodes yet? Our application requires microservices running on both Linux and Windows nodes. Can we run this via Karbon yet? Thanks!

Tillerless Helm on Nutanix Karbon

What is Helm?Helm is a tool that simplifies how your IT operation team install and manage Kubernetes applications. You could consider it like a package manager in Linux (apt/yum) but for Kubernetes. What is a Helm chart?A Helm chart is just a package that contains the Kubernetes application. This is...

Latest Nutanix Karbon How-To Videos

Nutanix Karbon is an enterprise-grade Kubernetes Certified distribution that simplifies the provisioning, operations and lifecycle management of Kubernetes with a native Kubernetes experience. Karbon makes it simple to deploy a highly available Kubernetes cluster and operate web-scale workloads. C...

Backing Up Karbon Kubernetes clusters with Velero and Nutanix Objects

Disclaimer: This post is intended for demo purposes and must not be considered production ready. Velero is not included in Nutanix Karbon, hence Nutanix support won’t handle any case related to Velero. OverviewOne of the main principles of containerised applications is stateless. The reason is not m...

Possible to change Karbon OS Image to later version of CentOS

Trying to facilitate the use of Karbon for internal users but they have requested a later version of CentOS. When launching the Karbon Portal the only option to download for the OS Image is currently centos7.5.1804-ntnx-0.0. Is it possible to upgrade this to say CentOS-8.1905?

Access Karbon Volumes from outside k8s cluster

Good dayI have a few questions regarding PVs on Karbon Clusters.Is there a way to access Persistent Volumes created by Kubernetes besides getting to it from within the pod the volume is mounted? If the PV has status Released, can I still be able to access it without having to bind it again?Basically...

Karbon deployment failed

Hi Friends, I tried to deploy karbon and the deployment getting failed.The error is as below in the log file. Regards Ritchie James 2019-09-18T12:23:03.941951000Z 2019/09/18 12:23:03.939732 etcd_deploy.go:116: [DEBUG] Waiting for connection... 2019-09-18T12:23:05.943064000Z 2019/09/18 12:23:05.9...

Playing with Karbon

Hello All I am new to Nutanix and new to Kubernetes so my apologises for the newbie questions? I've played with docker and kubernetes on my Windows machine but having a brain freeze transitioning to the karbon cluster. How do I get kubectl to use my configure file I downloaded from Karbon? Cur...

Storage Class User for Karbon

I'm trying to configure a new Kubernetes cluster using Karbon. When I get to the stage of configuring the storage class, I'm prompted for a user name and password. I'm not sure which user I should be entering here, as the few I've tried don't seem to work. The cluster setup tutorial video shows the...

How to Karbon configure

I'm testing Karbon. I'm very basic level. I can't make it through the karbon configure testing, so I'll ask you for help. I've upgraded Karbon to the latest version through LCM. After that, I set it up through "Create Kubernets Cluster." That's the problem from here. In the end, an error occurs i...

Kubernetes Dashboard on Nutanix Karbon

With the release of Nutanix Karbon TP, PC 5.9, you may want to deploy some of the traditional addons like Kubernetes Dashboard with Heapster. This post walks you through the process to successfully deploy the Kubernetes Dashboard addon. Before you can start with the deployment of the addon you nee...

Karbon deployment Failed: failed to deploy the ntnx dvp

Deploying a karbon cluster we got this error on 8% of process:Deployment Failedinvalid argument: internal error: internal error: failed to deploy the ntnx dvp: Failed to configure with SSH: Failed to run command: on host: "xx,xx,xx,xx:22" error: "Process exited with status 1"Has anyone the same prob...

NCC Checks - Volume Groups

Hi all When doing NCC checks, I get a report(example1) that some volume groups usage is high (95%). example1: Detailed information for vg_space_usage_check: Node 10.x.x.x: FAIL: Volume Group pvc-xxxxxx-9xxx-11x9-bf59-xxxxx8d87c391 space usage (95 above 90 % _ The volume group is mounted to...

How to renew Karbon cluster's kubeconfig dynamically?

Hi all Since kubeconfig is only valid for 24hours, is there a way to renew it automatically on expiry? An API call maybe? Using the same credentials to login on the Karbon Console? The idea is to automatically update the kubeconfig from our CI/CD pipeline to deploy to Kubernetes. Please also...

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