Stories Tag: engineering

Zero downtime migrate helm 2 to 3 with the sample violent way | by Chris Kuan | 漸強實驗室 Crescendo lab — Engineering...

admin 2 months ago in

這篇文章主要來分享，漸強實驗室是如何利用簡單暴力的方式，安靜無感的把 helm 2 升級到 helm 3！ 前情提要，漸強實驗室的眾多服務主要都部署在一個大型共享的 Kubernetes 叢集，這個決定當然主要是跟人力與成本有關，有篇文章分析還不錯，提供大家參考；而這個叢集上面的應用主要使用 helm 來做部署的管理，這個叢集目前維護了兩年多，起初使用 helm 2 來部署大量的應用，直到 helm 3 在一年多前問世… 當時評估了一下，考量總有一天還是要上 helm 3，於是決定，新的服務使用 helm 3 來部署，然後舊的服務續用 helm 2，然後再找時間來慢慢升級，於是這場升級之旅延續了一年多，終於在最近全部升級完成，雖然 2020 年的 11 月 helm 2 就已經不再更新 😅 ，但你知道的… 本來就用的好好的東西，處理的優先次序一直不是太高，就拖了一陣子。 當時講到是否一定要升級到 helm 3 跟好處，我們其實也是觀望了一陣子，但光是之後社群不再維護，我想除非自己或公司 fork 來維護，不然使用已經不維護的工具，怎麼樣都不會是最好的選擇，所以尬廣跟上新版本，也是很樸實無華的工程師日常才對！？ 前前後後升級了幾個社群開發的 helm chart (ex. Jenkins, Prometheus Operator…)，然後是我們自己開發的 chart，用暴力替換的主要是我們自己開發的 chart，分成 HTTP API server 以及 Async task worker 兩種，都是屬於 stateless 的應用。 因為 helm 2 與 helm…

An Introduction to Developing Microservices on Kubernetes (in Pipedrive) | by Ragnar Paide | Pipedrive Engineering | Feb, 2021 |...

admin 3 months ago in

To better understand the main structure of Pipedrive, you need to know that it is built upon a microservice architecture. There are hundreds of different microservices deployed on clusters of servers within Pipedrive. Each one of these performs very concrete tasks and offer services to other microservices. This creates an integrated network of small and easily manageable services that together form the Pipedrive application. These…

Kubernetes: A Brief History. By Andrew Murray | by MetaRouter Team | Jan, 2021 | Medium

admin 4 months ago in

By Andrew Murray Recently, I presented an overview on Kubernetes: what it is and why it got willed into existence in the first place. This is the first step in a series of deep-dive Kubernetes presentations he has planned. If you’re exploring Kubernetes as an option-or you love it and want to learn more-let’s start with understanding “why.” But first, so we’re all on the…

In favour of putting it out there | by Kirank | Jan, 2021 | Medium

admin 4 months ago in

Around 2010, a group of software folks engineers at Google were working on the standards for software containers. One of the first design decisions they made was to have containers run on IP addresses instead of ports. The networking team said to them — “Hold on. We are introducing IPV6 protocols and it is best that you wait another 6 months till it is rolled…

Infrastructure Engineering — The Kubernetes Way | by T.v. Vignesh | Timecampus | Jan, 2021 | Medium

admin 4 months ago in

This blog is a part of a series on Kubernetes and its ecosystem where we will dive deep into the infrastructure one piece at a time In the previous post, we discussed “The First Principles of Infrastructure Engineering” setting the context to this series discussing all our visions and goals when working with incrementally scalable and adaptable cloud native infrastructure to cater to the most…

Why are companies shifting to a DevOps culture? | by Shane Shown | Dec, 2020 | Medium

admin 5 months ago in

Gene Kim, the co-founder of Tripwire Inc., says “Currently, DevOps is more like a philosophical movement, not yet a precise collection of practices, descriptive or prescriptive.” There seems to be a lot of that going around in the IT realm! From struggling to define computer science to trying to pin down what hard and soft errors are — there are many things you can’t precisely…