DevOps&SRE Library

terraform-github-actions

This is a suite of terraform and OpenTofu related GitHub Actions that can be used together to build effective Infrastructure as Code workflows.

https://github.com/dflook/terraform-github-actions

📌 Kubernetes — это база. А Слёрм запускает базовый курс по k8s уже в январе. В процессе обучения вы: ▪️разберете основы работы с Kubernetes, устройство кластера и отказоустойчивость; ▪️познакомитесь с продвинутыми абстракциями в k8s; ▪️научитесь подключать системы хранения данных на примере Ceph; ▪️узнаете, как работают DNS-сервисы, Helm и CI/CD. Вас ждут подробные видеоуроки, практика на стендах в личном кабинете, АМА-сессии со спикерами и итоговая сертификация в конце курса. 🎁 Бонус для всех, кто хочет начать заниматься сразу — бесплатный доступ к первому модулю. Поток стартует 17 января. Не упустите шанс сохранить для себя цены 2023 года — присоединяйтесь прямо сейчас! Изучить программу и присоединиться к курсу

Take your testing to the cloud https://mattias.engineer/posts/take-your-testing-to-the-cloud

Testing Framework in Terraform 1.6: A deep-dive https://mattias.engineer/posts/terraform-testing-deep-dive

git rebase: what can go wrong? https://jvns.ca/blog/2023/11/06/rebasing-what-can-go-wrong-

AWS CDK vs Terraform

IaC is one of the key DevOps practices, and AWS CDK & Terraform are both great IaC tools to manage your AWS infrastructure. Having used both extensively, let me share my experience with the 2 IaC tools.

https://medium.com/@kansvignesh/aws-cdk-vs-terraform-738c39d91f7a

Upgrading GitHub.com to MySQL 8.0

GitHub uses MySQL to store vast amounts of relational data. This is the story of how we seamlessly upgraded our production fleet to MySQL 8.0.

https://github.blog/2023-12-07-upgrading-github-com-to-mysql-8-0

On Error Budgets

An error budget is essentially the permissible limit of risk or failure that a service can tolerate while still meeting its objectives. It is closely tied to Service Level Objectives, which define the expected level of service reliability. For instance, if an SLO dictates 99.9% uptime, the error budget allows for a 0.1% margin of error or downtime.

https://www.codereliant.io/on-error-budgets

Service Level Indicators

Introduction to SLI, examples, counterexamples and tips

https://blog.alexewerlof.com/p/sli

tofuenv

OpenTofu version manager inspired by tfenv

https://github.com/tofuutils/tofuenv

Martian Kubernetes Kit: a smooth-sailing toolkit from our SRE team

We’ve been using Kubernetes since before it was a “thing”, and as of 2023, we believe that it is still underutilized. In fact, it’s the best (and basically only real “at-scale”) solution for orchestrating Docker containers—or containers in general, after you’ve outgrown services like Heroku or Fly.io! That’s a bold claim, but it’s a belief backed up by our years of SRE experience. In this post, we’ll expand on that, and we’ll introduce a Kubernetes toolkit we already use and support for our clients, which simultaneously de-complexifies and highlights the benefits of Kubernetes.

https://evilmartians.com/chronicles/martian-kubernetes-kit-a-smooth-sailing-toolkit-from-our-sre-team

Healthchecks.io Hosting Setup, 2022 Edition https://blog.healthchecks.io/2022/02/healthchecks-io-hosting-setup-2022-edition Healthchecks.io Hosting, Questions and Answers https://blog.healthchecks.io/2022/05/healthchecks-io-hosting-questions-and-answers

Notes on Self-hosted Transactional Email

Since a little more than two months ago, Healthchecks.io has been sending transactional email (~300’000 emails per month) through its own SMTP server. Here are my notes on setting it up.

https://blog.healthchecks.io/2023/08/notes-on-self-hosted-transactional-email

Kubewatch: A Kubernetes Watcher for Observability and Monitoring

Kubewatch is a Kubernetes watcher that publishes notifications to available collaboration hubs/notification channels. It watches the cluster for resource changes and notifies you through webhooks.

https://medium.com/@seifeddinerajhi/kubewatch-a-kubernetes-watcher-for-observability-and-monitoring-d6dea1dbeb06 https://github.com/robusta-dev/kubewatch

Kubernetes And Kernel Panics

How Netflix’s Container Platform Connects Linux Kernel Panics to Kubernetes Pods

https://netflixtechblog.com/kubernetes-and-kernel-panics-ed620b9c6225

VictoriaMetrics: A Comprehensive Guide, Comparing It to Prometheus, and Implementing Kubernetes Monitoring https://medium.com/@seifeddinerajhi/victoriametrics-a-comprehensive-guide-comparing-it-to-prometheus-and-implementing-kubernetes-03eb8feb0cc2

Mastering AWS Lambda with Terraform: A Comprehensive Guide https://blog.awsfundamentals.com/aws-lambda-with-terraform

Scaling SRE Teams

Scaling teams of site reliability engineers comes with many challenges. Here, explore the challenges of scaling and review a successful scaling framework.

https://dzone.com/articles/scaling-sre-teams

A Spooky Performance Regression in AWS EBS Volumes https://www.dolthub.com/blog/2023-11-22-spooky-performance-regression-aws-ebs Christmas Come Early: An AWS EBS Performance Regression Update https://www.dolthub.com/blog/2023-12-08-christmas-come-early-ebs-performance-regression-update

GitOps Guide: ArgoCD vs Flux https://www.codereliant.io/gitops-guide-argocd-vs-flux