Topics started by JoseNutanix

9 Topics

JoseNutanix
Nutanix Employee
JoseNutanixNutanix Employee
posted in Nutanix Kubernetes Engine

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 make this application portable and non dependant of any data. In this way you can re-use the same container image on any platform with the same result. Because containers started to gain popularity because the portability, scalability, and so on, the community found out a way to containerise stateful applications like databases with the use of local storage, or shared volumes. Recover stateless applications is a very straightforward process, you just need to re-apply your manifest file in another cluster. You just need to make sure your manifest file is up-to-date with the latest state running in your cluster. Remember you shouldn’t make changes directly in your cluster, you should update you

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JoseNutanix
Nutanix Employee
4 years ago
JoseNutanix
Nutanix Employee
JoseNutanixNutanix Employee
posted in Nutanix Kubernetes Engine

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 similar to a .deb/.rpm package on your preferred Linux distribution. What are the Helm use cases?If you are wondering why use Helm is a good idea, here some of the reasons:Most of the popular software has a Helm chart to facilitate its installation on Kubernetes If you are looking to share your own Kubernetes application, a Helm chart is the way to go Consistency during deployments is a key aspect, charts bring reproducible builds of your applications Kubernetes applications are a group of manifest files. A chart helps you to manage the complexity of those Kubernetes manifest files Manage releases of Helm packagesHelm architectureFrom Helm website:Helm has two parts: a client (helm) and a s

2
aluciani
4 years ago
JoseNutanix
Nutanix Employee
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 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 need a working Kubernetes cluster and the kubectl CLI-tool. The steps to follow are: Deploy Heapster Deploy Kubernetes Dashboard Connect to Kubernetes Dashboard Deploying HeapsterFrom Heapster website: Heapster enables Container Cluster Monitoring and Performance Analysis for Kubernetes (versions v1.0.6 and higher), and platforms which include it. Heapster is deprecated. Consider using metrics-server and a third party metrics pipeline to gather Prometheus-format metrics instead. See the deprecation timeline for more information on support. The reason of using Heapster is because: Currently only Heapster integration is supported with Kubernetes Dashboard, however t

8
R
4 years ago
JoseNutanix
Nutanix Employee
JoseNutanixNutanix Employee
posted in Self-Service

Calm + Ansible Part 1: Inventory Management

Overview Integrating Nutanix Calm and Ansible is straightforward. This series walk you through the different steps to get your integration ready. Part 1 focuses on Inventory Management, how your new servers and applications get registered in Ansible for day 1 provisioning and day 2 operations management. Code The blueprint and code used in this part can be found here. Requirement Ansible Tower or Ansible AWX Enjoy the video and let us know if you have any question!  

0
JoseNutanix
Nutanix Employee
4 years ago
JoseNutanix
Nutanix Employee
JoseNutanixNutanix Employee
posted in Nutanix Kubernetes Engine

Istio Service Mesh on Nutanix Karbon

Disclaimer: 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. What is a service mesh?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. Source: Microtica What is Istio?From Istio website: “At a high level, Istio helps reduce the complexity of these deployments, and eases the strain on your development teams. It is a completely open source service mesh that layers transparently onto existing distributed applications. It is also a platform, including APIs that let it integrate into any logging platform, or

0
JoseNutanix
Nutanix Employee
4 years ago
JoseNutanix
Nutanix Employee
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

0
JoseNutanix
Nutanix Employee
4 years ago
JoseNutanix
Nutanix Employee
JoseNutanixNutanix Employee
posted in Self-Service

Calm + Ansible Part 2: Launching a Job Template

Overview Integrating Nutanix Calm and Ansible is straightforward. This series walk you through the different steps to get your integration ready. Part 2 focuses on Launching a Job Template (a.k.a. Ansible playbook), how your new servers and applications get the software installed. Code The blueprint and code used in this part can be found here. Requirement Ansible Tower or Ansible AWX Blog series Part 1: Inventory Management Enjoy the video and let us know if you have any question!  

0
JoseNutanix
Nutanix Employee
4 years ago
JoseNutanix
Nutanix Employee
JoseNutanixNutanix Employee
posted in Self-Service

Calm + Ansible Part 3: Multi-Machine Application

Overview Integrating Nutanix Calm and Ansible is straightforward. This series walk you through the different steps to get your integration ready. Part 3 focuses on deploying a Multi-Machine Application, how you deploy Consul on a three virtual servers. Code The blueprint and code used in this part can be found here. Requirement Ansible Tower or Ansible AWX Blog series Part 1: Inventory Management Part 2: Launching a Job Template Enjoy the video and let us know if you have any question!  

0
JoseNutanix
Nutanix Employee
4 years ago
JoseNutanix
Nutanix Employee
JoseNutanixNutanix Employee
posted in Nutanix Kubernetes Engine

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

Note: 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 (https://github.com/kubernetes/kubernetes/issues/71411). 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. Note: 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 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 2. Connect to the master node and run the commands (change the IP address with yours): code:ssh root@10.10.56.174 code:sed -i 's/hyperkube:v1.10.3/hyperkub

0
JoseNutanix
Nutanix Employee
5 years ago

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