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A Quick Review of Kubernetes etcd

A Quick Review of Kubernetes etcd

(Jan. 27 2020) – So you’ve got a Kubernetes cluster, now what? etcd is the persistent key-value store that holds the state of a Kubernetes cluster. Every pod, deployment, secret, kubelet – everything about a Kubernetes cluster is stored in etcd. That means that etcd is one of the most important things to keep backups…

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The Kubernetes Learning Journey for Developers

The Kubernetes Learning Journey for Developers

(Jan. 23 2020) – As an official Kubernetes Training Partner and Certified Service Provider, we’re often asked what’s the best way for developers and DevOps teams to properly skill-up on Kubernetes.   There are a few paths future Kubernetes developers can take on their way to becoming Certified Kubernetes Application Developers (CKAD).  For Kubernetes beginners, we…

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How does Kubernetes Ingress work?

How does Kubernetes Ingress work?

(Jan. 7 2020) – In this quick video, we answer the question of how Ingresses in Kubernetes work. Ingresses manage external access to services and pods within a cluster.  We start with three pods in our cluster, with their IP addresses ending at .9, .17, and .22. These pods use an existing pod network with…

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Using Raw API calls to control Kubernetes

Using Raw API calls to control Kubernetes

(Jan. 3 2020) – This quick video explains how you configure Kubernetes pods to control Kubernetes itself with raw API calls. Most users interact with Kubernetes using kubectl. kubectl itself is a sophisticated wrapper for “curl” and communicates with a Kubernetes cluster’s API server. Using the -v flag followed by a number tells kubectl to…

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Navigating network services and policy with Helm

Helm Tigera Blog

(Dec. 19 2019) – Deploying an application on Kubernetes can require a number of related deployment artifacts or spec files: Deployment, Service, PVCs, ConfigMaps, Service Account — to name just a few. Managing all of these resources and relating them to deployed apps can be challenging, especially when it comes to tracking changes and updates…

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One-Way Pod Scaling with the Kubernetes HPA

One-Way Pod Scaling with the Kubernetes HPA

(Jul. 30 2019) – Kubernetes has the ability to dynamically scale sets of pods based on resource usage. This is great for ensuring that applications always have the resources they need as loads vary. Autoscaling the number of pods in Kubernetes is most often accomplished using a Horizontal Pod Autoscaler (HPA). HPAs dynamically adjust the…

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New Release: Prometheus for Users Training

New Release: Prometheus for Users Training

(July 29 2019) – RX-M is excited to announce our brand new course: Prometheus for Users. This hands-on course allows users to move from just using the basic principals of the software to advanced timeseries query development and dashboarding. The course is organized into modules, these include hands-on labs that offer practical experience working with Prometheus.…

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Vitess: Sharded MySQL on Kubernetes

Vitess: Sharded MySQL on Kubernetes

(Jul. 26 2019) – Though the relational data model inherently fights horizontal scaling attempts, it is the best understood and most used data model in the world. More than one company has planted its storage flag in the MySQL/MariaDB soil only to be confounded by success and the scalability challenges that come with it. Fortunately…

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Why a La Carte Education is Critical for Open Source Skill-Building

Why a La Carte Education is Critical for Open Source Skill-Building

(Jul. 22 2019) – Randy Abernethy (Managing Partner of RX-M, LLC) takes a seat with Clyde Seepersad (General Manager of Training and Certification of The Linux Foundation) to discuss his work and role in the Linux Foundation. Their discussion covers topics such as the establishment of certifications, the success of CKA & CKAD exams, failed…

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New Release: Fluentd Foundation Training

New Release: Fluentd Foundation Training

(July 8 2019) – RX-M would like to announce the recent release of the Fluentd Foundation course. This intensive two-day hands-on course will help working technology professionals master the essentials. The course covers key concepts necessary to deploy, use, and tailor a production solution. Attendees will learn how to collect data from multiple sources using data input…

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