ctlptl (pronounced "cattle paddle") is a CLI for declaratively setting up local Kubernetes clusters.

Inspired by kubectl and ClusterAPI's clusterctl, you declare your local cluster with YAML and use ctlptl to set it up.

This course considers two closely related topics, Concurrent Systems and Distributed Systems, over 16 lectures. The aim of the first half of the course is to introduce concurrency control concepts and their implications for system design and implementation. The aims of the latter half of the course are to study the fundamental characteristics of distributed systems, including their models and architectures; the implications for software design; some of the techniques that have been used to build them; and the resulting details of good distributed algorithms and applications.

illuminatio is a tool for automatically testing kubernetes network policies. Simply execute illuminatio clean run and illuminatio will scan your kubernetes cluster for network policies, build test cases accordingly and execute them to determine if the policies are in effect.

Ежегодный отчет от GitHub.

A tool to monitor I/O latency in real time. It shows disk latency in the same way as ping shows network latency.

This document is going to describe how I manage my personal server in 2020. It will talk about

- Management of secrets with SOPS and a GPG key
- Automatic management of DNS record
- Configuration of Debian and installation of Kubernetes k3s
- Setup Nginx ingress with let's encrypt for automatic TLS certificate
- Deployment of postfix + dovecot for deploying an email server
- Install Nextcloud to get your personal cloud in the sky
- Putting backup in place
- Using Wireguard to create a private network and WsTunnel to bypass firewalls
- Adding a Raspberry Pi to the K3s cluster

In short: Linkerd doesn't use Envoy because using Envoy wouldn't allow us to build the lightest, simplest, and most secure Kubernetes service mesh in the world.

ZeroSSL.com is now joining the (sadly) very small group of awesome CAs giving away free, 90-day certs via ACME.

How culture enabled a technology org to scale without a dedicated platform team.

In this post, I would like to share the incident management practices I have picked up over the years as an SRE at Linkedin that help me keep calm under pressure and effectively drive incidents to resolution.