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The latest News and Information on Containers, Kubernetes, Docker and related technologies.

Kubernetes Master Class - Addressing the Amount of Pull Requests in Rancher

In this master class Support Engineer Matthew Mattox will address the new Docker Hub limits and how to reduce the number of pull requests made against Docker Hub. We will go over different options including building a full registry mirror, and using the standard registry, including the required maintenance tasks, to use a pull-through-cache registry. We will also cover some Enterprise solutions (e.g. JFrog) along with how to reduce the number of pulls while using Docker Hub.

High Availability and etcd management in K3s Kubernetes - Darren Shepherd

Darren Shepherd, K3s creator, talks through the mechanics of embedded etcd in K3s and how it allows for highly-available cluster setups. Taken from from his talk "K3s Internals: The Crazy Things We Do To Make k8s Simple". Get free credit to try the world’s first K3s-powered, managed Kubernetes service.

Splunking AWS ECS And Fargate Part 3: Sending Fargate Logs To Splunk

Welcome to part 3 of the blog series where we go through how to forward container logs from Amazon ECS and Fargate to Splunk. In part 1, Splunking AWS ECS Part 1: Setting Up AWS And Splunk, we focused on understanding what ECS and Fargate are, along with how to get AWS and Splunk ready for log routing to Splunk’s Data-to-Everything Platform.

Getting started with PromQL - Includes Cheatsheet!

Getting started with PromQL can be challenging when you first arrive in the fascinating world of Prometheus. Since Prometheus stores data in a time-series data model, queries in a Prometheus server are radically different from good old SQL. Understanding how data is managed in Prometheus is key to learning how to write good, performant PromQL queries. This article will introduce you to the PromQL basics and provide a cheat sheet you can download to dig deeper into Prometheus and PromQL.

Kubernetes Master Class: A Seamless Approach to Rancher and Kubernetes Upgrades

In this master class Matt Mattox, Principal Support Engineer at Rancher (now a part of SUSE), will address the high-level steps required to plan and perform a Rancher and Kubernetes upgrade. We will go over planning the upgrade and selecting versions. Then we’ll plan out the change controls needed for the upgrade, including the required maintenance windows. We will also walk through different upgrades, including rolling back from a failed upgrade. Finally, We will cover how to automate upgrades.

How to Successfully Deploy Kubernetes Across Multi-Cloud Environments

Today’s enterprise organizations are using some form of multi-cloud infrastructure, and the numbers don’t lie. According to Flexera’s 2020 State of the Cloud report, an average of 2.2 public clouds are being used per enterprise company. And in a different report from the Everest Group, 58% of enterprise workloads are on hybrid or private cloud. The sheer increase in multi-cloud usage illustrates it’s growing popularity across enterprises.

Shifting Complexities in DevOps

In this episode of ShipTalk, Jim Shilts, Developer Advocate at Shipa and the Founder and President of North American DevOps Group (NADOG), chats with Ravi Lachhman, Evangelist at Harness on the “Shifting Complexities in DevOps.” Jim has been working on solving engineering efficiency problems for over 20 years, working at firms such as Build Forge and Electric Cloud, pre-dating the inception of Hudson/Jenkins.

Detecting and mitigating Apache Unomi's CVE-2020-13942 - Remote Code Execution (RCE)

CVE-2020-13942 is a critical vulnerability that affects the Apache open source application Unomi, and allows a remote attacker to execute arbitrary code. In the versions prior to 1.5.1, Apache Unomi allowed remote attackers to send malicious requests with MVEL and OGNL expressions that could contain arbitrary code, resulting in Remote Code Execution (RCE) with the privileges of the Unomi application.