April 2 How to compare the performance of different HashiCorp Vault backends

Vault is an Open Source solution by HashiCorp for managing secrets. Its built-in modularity and scalability allow you both to run a small development server on your laptop and operate a fully-fledged HA-cluster intended for production environments. While preparing to use Vault, we asked ourselves two key questions: What backend (i.e., a place where secrets […]

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March 25 Introducing ovpn-admin — a web interface to manage OpenVPN users

Operating a diverse infrastructure for many customers, we realised a need for a convenient tool to manage OpenVPN certificates and users a long time ago. In a nutshell, we wanted to have a simple web interface instead of going through servers/containers and running all these CLI commands. Since the existing solutions that meet our requirements […]

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March 19 Recent troubleshooting cases from our SREs, part 3

Today, we are happy to continue our series of articles (part 1, part 2) dedicated to the challenges we face during our everyday operations. That’s our way to share our thoughts at the time and describe the actions that allowed us to overcome those obstacles successfully. Here, we will tell you the story of one […]

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March 12 Open Source solutions for chaos engineering in Kubernetes

Chaos engineering for Kubernetes gets more and more popular, and rightly so: after all, K8s was designed with the ideas of availability and resiliency in mind. Therefore these marvelous features must be tested on real-life projects occasionally. Fortunately, there are many Open Source solutions available that can help you with experimenting. Hopefully our review of […]

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February 26 Our experience with Postgres Operator for Kubernetes by Zalando

Our efforts in analyzing existing Kubernetes operators for PostgreSQL resulted in this comparison. And now we’d like to share our practical experience and fascinating lessons learned while using the solution of our choice — Postgres Operator by Zalando. Installing & getting started To deploy the operator, download the current release from GitHub and apply YAML […]

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February 18 Comparing Kubernetes operators for PostgreSQL

Our clients tend to ask us: “Can we have a cheaper alternative to Amazon RDS?”, “Wouldn’t it be awesome to have something like RDS not just in AWS…”. Well, to meet their needs and implement an RDS-like managed solution in Kubernetes, we took a look at the current state of the most popular PostgreSQL operators: […]

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February 12 shell-operator & addon-operator news: hooks as admission webhooks, Helm 3, OpenAPI, Go hooks, and more!

Shell-operator and addon-operator are Open Source projects developed by Flant for Kubernetes administrators. They were first introduced in April 2019. Shell-operator simplifies the creation of K8s operators: it allows you to use custom scripts written in Bash, Python, etc. (or any executables) that will be executed when some event happens in the Kubernetes API. Addon-operator […]

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February 4 Configuring Continuous Integration for Jenkins & Bitbucket using werf

The werf tool is designed to easily integrate with any CI/CD system. The general approach to this process is provided in the epilogue, while the main part of this article discusses the practical example of organizing a CI process in Jenkins and Bitbucket. After reading this article, you will learn how to: create a Jenkins […]

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January 29 Announcing elasticsearch-extractor tool to extract indices from snapshots

Today, we are happy to announce our latest Open Source project — elasticsearch-extractor! This simple web UI solves just one task — it extracts a given index from the Elasticsearch snapshot. But why has this project come into being? Motivation Imagine that you have many similar Elasticsearch installations in Kubernetes, where numerous logs from applications […]

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November 25, 2020 K9s — the powerful terminal UI for Kubernetes

Have you already heard about K9s? It is a terminal-based UI to manage Kubernetes clusters that aims to simplify navigating, observing, and managing your applications in K8s. K9s continuously monitors Kubernetes clusters for changes and provides shortcut commands to interact with the observedsources. This Open Source project is written in Go and has been in […]

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