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Nutanix Kubernetes Engine

Kubernetes Management Made Simple

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Backing Up Karbon Kubernetes clusters with Velero and Nutanix Objects

Latest Nutanix Karbon How-To Videos

Tillerless Helm on Nutanix Karbon

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andymlloydTrailblazer

asked in Nutanix Kubernetes Engine

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?

4 years ago

KeoNaaneAdventurer

asked in Nutanix Kubernetes Engine

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, I want to know if the data on Karbon PVs can be accessed via ssh, or something else other than K8s pods. If backups are saved on a PV, can I access the data from another VM besides the cluster worker nodes?

4 years ago

alunkalTrailblazer

asked in Nutanix Kubernetes Engine

HongAdventurer

asked in Nutanix Kubernetes Engine

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 in the "Deployment Failed" status section. Deploying 8% has an error. I looked up various information. I looked it up, and I think you should setting Proxy http and ERCD. How can setting? Please explain in detail the reason why Karbon can't be distributed. Thank you.

4 years ago

JoseNutanixNutanix Employee

posted in Nutanix Kubernetes Engine

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 [b]Kubernetes Dashboard with Heapster[/b]. 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 need a working Kubernetes cluster and the [b]kubectl[/b] CLI-tool. The steps to follow are: [list=1] [*]Deploy Heapster [*]Deploy Kubernetes Dashboard [*]Connect to Kubernetes Dashboard [/list] [h2]Deploying Heapster[/h2]From Heapster website: [i]Heapster enables Container Cluster Monitoring and Performance Analysis for Kubernetes (versions v1.0.6 and higher), and platforms which include it.[/i] [b][i]Heapster is deprecated[/i][/b][i]. Consider using metrics-server and a third party metrics pipeline to gather Prometheus-format metrics instead. See the[/i] [url=https://github.com/kubernetes/heapster/blob/master/docs/deprecation.md][i]deprecation timeline[/i][/url][i] fo

4 years ago

jmoroAdventurer

asked in Nutanix Kubernetes Engine

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 problem? Any idea on how to advance?Regards.Javier

4 years ago

KeoNaaneAdventurer

asked in Nutanix Kubernetes Engine

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 Kubernetes pod running in a Karbon cluster. My issue is that, when checking usage of the volume group from within the kubernetes pod, I get different usage results, current stats are 24% used, 76% free. The NCC check and the manual check results don't match. NOTE: There is a clean-up mechanism, so disk usage does go up and down. I have re-ran the ncc checks several times, they yield the same stats (95% usage), thou the usage from the pod is 24%(currently). Can you please elaborate on how the NCC vg_space_usage_check work? And what else to look at to further investigate the mismatch of stats. Tx

4 years ago

KeoNaaneAdventurer

asked in Nutanix Kubernetes Engine

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 share, if there is, best practices for integrating Karbon clusters with Jenkins CI/CD pipeline. I thank you

4 years ago

JoseNutanixNutanix Employee

posted in Nutanix Kubernetes Engine

Grafana on Nutanix Karbon

Here I am at London Luton airport waiting for my delayed flight to KubeCon 2019 in Barcelona. Three hours ‘free’ to write a new blog, this time about how to deploy Grafana on Nutanix Karbon.When deploying a Kubernetes cluster with Karbon you get by default few add-ons like logging with EFK (Elasticsearch, Fluentd and Kibana) or monitoring with Prometheus.Today the visualisation of Prometheus in Karbon is just for alerts. If you are looking to gather metrics information you will need to deploy Grafana as the visualisation interface. In this blog I’ll show you how easy and quick is to deploy Grafana with Tillerless Helm. Because Karbon is open and upstream Kubernetes, there is no need of complex configurations.PrerequisiteBefore you can proceed with the installation of Grafana, you will need to install Helm. I wrote a blog about how to do it in a secure manner. Refer to Tillerless Helm on Nutanix Karbon blog for the installation.Install GrafanaAs mentioned before, every Kubernetes cluste

4 years ago

JoseNutanixNutanix Employee

posted in Nutanix Kubernetes Engine

Istio Service Mesh on Nutanix Karbon

[b]Disclaimer[/b]: This post is intended for demo purposes and must not be used for production clusters. Istio is not included in Nutanix Karbon today, hence Nutanix support won’t handle any case related to Istio. [h1]What is a service mesh?[/h1]When transitioning from monolithic applications to a distributed microservice architecture the number of services dramatically increases. This decentralisation at scale makes it difficult for developers and operators to enable service-to-service communications. Service meshes enable service-to-service communications providing connectivity, security, control and observability. [img]https://d1qy7qyune0vt1.cloudfront.net/nutanix-us/attachment/9d364aad-f1b0-444f-9759-ce0a6f83a210.png[/img] Source: [url=http://blog.microtica.com/2017/03/what-are-microservices-actually/]Microtica[/url] [h1]What is Istio?[/h1]From Istio website: [i]“At a high level, Istio helps reduce the complexity of these deployments, and eases the strain on your d

5 years ago

alucianiChevalier

posted in Nutanix Kubernetes Engine

Kubernetes Cluster Scaling with Nutanix Karbon

[video]https://youtu.be/iaP0G2cvaY4[/video] In this video, Michael Haigh walks through scaling a production grade Kubernetes cluster with Nutanix Karbon. Karbon simplifies the provisioning and life cycle management of Kubernetes clusters, freeing administrators and operators from manual and tedious tasks, and enabling developers to focus on their applications. :point_right: Are you running Nutanix Karbon? Be the first to hit reply and continue the conversation on this topic.

5 years ago

dstippExplorer

asked in Nutanix Kubernetes Engine

When will Karbon support multi-node PC?

Why Karbon does not support multi-node PC? Any estimative?

5 years ago

alucianiChevalier

posted in Nutanix Kubernetes Engine

Kubernetes Cluster Deployment with Nutanix Karbon

[video]https://youtu.be/BUb9weyoLnk[/video] Are you interested in deploying production grade Kubernetes clusters in your on prem data center? Well, with Nutanix Karbon, you can quickly provision, manage, and operate your Kubernetes clusters all with the Nutanix Prism. Let's get started. Now that Karbon is general availability, we'll just gonna go ahead and click on the menu button, and then down to services, and then Karbon. If Karbon is not enabled in your environment, there'll be a button here to press to enable it and it'll get spun up in about 5 to 10 minutes as a couple of docker containers which lives on the Prism central VM. Since mine is already enabled, I'm gonna click on the link to take me to the Karbon console. Now that that's opened up, I'm gonna go ahead and create a Kubernetes cluster. We're gonna get started here working through the development cluster workflow. All of these settings are configurable, as we'll see. I'm gonna actually come back and deploy a produ

5 years ago

alucianiChevalier

posted in Nutanix Kubernetes Engine

Kubernetes Host OS Upgrade with Nutanix Karbon

[video]https://youtu.be/IucbVL8lECk[/video] Are you looking to easily upgrade the Host Operating System of your Kubernetes nodes? With Nutanix Karbon, you can quickly and easily upgrade the Host OS of your Kubernetes nodes all with the Nutanix Prism. So let's get started. In a previous video, we successfully deployed this production grade Kubernetes cluster. We see that it is healthy and also that there is an upgrade available. The reason for that is there is actually a couple of Host OS versions available in the Karbon UI here. So you can imagine, if you deploy Kubernetes cluster and then about a month later, updated version of the host Operating System is released, you'll see a new option within the UI here and the ability to download it. So you'll just come in here and click a button to download it and then once it is downloaded like we see here, we get the option to upgrade the cluster. So I'm going to go ahead and select this and if we click on upgrade available, we see tha

5 years ago

jrackVanguard

asked in Nutanix Kubernetes Engine

Is Nutanix working with the Container Storage Interface (CSI) community and Kubernetes in general?

Beyond simple docker volume support but can Nutanix bring their expertise into the CSI space to make orchestration systems like k8s aware of cluster wide storage resources? It also leads into what Nuatnix is doing to enable a K8s API conformant solution on top of the platform. I recognize that we can layer on a k8s runtime as a customer, but similar to what we see with Pivotal leveraging BOSH to make day2 k8s work there seems to be demand for integrated options. The institutional storage knowledge could really take stateful sets to the next level and BOSH as a lot of similarities to Acropolis. I know that there may be overlap with Calm when it comes to service orchestration, but k8s is becoming the defacto language for orchestrating an application delivered by containers.

5 years ago

dlink7Moderator

posted in Nutanix Kubernetes Engine

Monitor Your Apps with Epoch

Xi Epoch generates live application maps to provide instantaneous visibility into your application health without any code instrumentation. Epoch provides visibility into the interactions between components in distributed architectures, without dependency on specific language or framework implementation. As a result, operations team can quickly ensure reliability and availability of any application in any cloud environment. The picture below is showing two different Kubernetes Clusters, Docker Enterprise and Nutanix Karbon. The collectors are deployed as daemon sets so they can be deployed to any Kubernetes cluster to start monitoring your applications. Epoch collectors can be run in both containerized as well as non-containerized environments. Only one collector is needed per host (VM or bare metal OS). [img]https://d1qy7qyune0vt1.cloudfront.net/nutanix-us/attachment/8ddea191-55ab-4db0-a322-6ddeeedf91dc.png[/img] Below is YugaDB running Cassandra commands and Epoch is able to l

5 years ago

nogodan1234Nutanix Employee

posted in Nutanix Kubernetes Engine

How to install Linkerd service mesh on Nutanix Karbon Cluster

This article will show you how to install well-known service mesh - Linkerd on your Nutanix Karbon cluster What is Linkerd ############# Linkerd is an open source network proxy designed to be deployed as a service mesh: a dedicated layer for managing, controlling, and monitoring service-to-service communication within an application Pre-requisites ############# [list] [*]A working Karbon Cluster with an internet connection. Tested with Kubernetes 1.10.3. [*][b]kubectl[/b] installed on your laptop with kubeconfig configured. [/list] [url=https://portal.nutanix.com/#/page/docs/details?targetId=Karbon-v08:Karbon-v08]https://portal.nutanix.com/#/page/docs/details?targetId=Karbon-v08:Karbon-v08[/url] How to install ############# [list] [*]Download Linkerd cli on your desktop then update PATH variable [/list][i]curl -sL https://run.linkerd.io/install | sh[/i] [i]export PATH=$PATH:$HOME/.linkerd2/bin[/i] [list] [*]Check Linkerd version [/list][i]linkerd version[

5 years ago

Winson_SouNutanix Employee

posted in Nutanix Kubernetes Engine

Deploying Prometheus on Nutanix Karbon

This is the first of a three-part blog post on deploying monitoring addons with Nutanix Karbon. Nutanix Karbon is a curated turnkey offering that provides simplified provisioning and operations of Kubernetes clusters. Kubernetes is an open-source container orchestration system for deploying and managing container-based applications. Karbon was released in Tech-Preview after the launch of AOS 5.9 and Prism Central 5.9 in October 2018. We’ve received several queries from our customers, partners and peers alike who value the simplicity that we bring to the table for Kubernetes, but they find it hard to understand how the cluster is behaving and what is going on under the covers. Enter [url=https://prometheus.io./]Prometheus[/url] (also known as Prom or P8s). Prometheus is an open-source monitoring tool that was built by a team at SoundCloud and it was inspired by Google’s [i]Borgmon[/i], it was designed from day one for the Kubernetes model of assigning and managing units

5 years ago

alucianiChevalier

posted in Nutanix Kubernetes Engine

Join us at KubeCon in Seattle, December 11-13

If you are headed to KubeCon this year, join us at KubeCon Exhibition – Booth# P12. Nutanix is showcasing how its developer focussed products increase the business agility and lower OpEx. This is an exciting year for us. With the introduction of Nutanix Karbon, we are bringing 1-click Kuberenetes on-prem and much more. Please join us for exciting theater sessions and demos! :point_right: Learn more about [url=https://www.nutanix.com/products/karbon/]Nutanix Karbon[/url]

5 years ago

JoseNutanixNutanix Employee

posted in Nutanix Kubernetes Engine

How to patch the recent Kubernetes vulnerability (CVE-2018-1002105) in Nutanix Karbon

[b]Note[/b]: Nutanix Karbon is on Technical Preview so it should not be used on production. The steps on this guide may impact the existing running containers. This post covers how to patch the recent Kubernetes vulnerability ([url=https://github.com/kubernetes/kubernetes/issues/71411]https://github.com/kubernetes/kubernetes/issues/71411[/url]). The version used as an example in this post is Kubernetes version 1.10.3, this is the only version tested but it should work on the same way for any of the other Kubernetes versions available in Karbon. [b]Note[/b]: the SSH password is the known standard for Nutanix CVM 1. Gather the IP address for your Kubernetes nodes: [code]kubectl get nodes -o yaml | grep address [/code] Output: [code] addresses: - address: 10.10.56.174 - address: security-e8316c-k8s-master-0 addresses: - address: 10.10.56.150 - address: security-e8316c-k8s-worker-0 [/code] 2. Connect to the master node and run the commands (c

5 years ago

Ahmed_ElgendyNutanix Employee

posted in Nutanix Kubernetes Engine

Nutanix CSI Driver compatibility with Kubernetes 1.12/+

CSI Driver for Kubernetes was introduced one month ago leverages Nutanix Volumes (formerly known as ABS) to provide scalable and persistent storage for stateful applications. (For more info check this blog [url=https://next.nutanix.com/blog-40/nutanix-releases-new-kubernetes-csi-based-driver-30941]post[/url] ) With the recent Kubernetes 1.12 some breaking changes were introduced (More details mentioned here # [url=https://github.com/kubernetes/kubernetes/issues/68688]68688[/url] ), it makes current CSI driver not working. Volume mounting is failing with error like: [code]Events: Type Reason Age From Message ---- ------ ---- ---- ------- Normal Scheduled 2m41s default-scheduler Successfully assigned default/server-3-pbvzg to gfs3.local Normal SuccessfulAttachVolume 2m41s attachdetach-controller AttachVolume.Attach succeeded for volume "pvc-e12c700d-dc71-11e8-b694-5

5 years ago

broccoliVoyager

asked in Nutanix Kubernetes Engine

Can Capacity Deduplication Be Disabled After Once Deduplication Enabled?

Hi, I enabled capacity deduplication feature on Storage container. and due to performance issue I would like to turn off Capacity Deduplication. is it possible and perfectly safe? My AOS version is 5.5.7.

5 years ago

alucianiChevalier

asked in Nutanix Kubernetes Engine

Cool GitHub Project: Kubernetes and Nutanix

Cool GitHub project - Kubernetes installation tools for Nutanix. Give it a try and add your comments in this forum. I'm sure [url=http://next.nutanix.com/member/profile?mid=25525]RedDevil[/url] would like to hear your feedback. Download here: [url=https://github.com/nutanix/k8s]https://github.com/nutanix/k8s[/url]

5 years ago

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