SadServers - Linux & DevOps Troubleshooting Interviews
"Like LeetCode for Linux" Capture The Flag challenges. Train and prove your debugging skills. Practice for your next SRE/DevOps interview. Get a full remote Linux server with a problem and fix it.
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"Like LeetCode for Linux" Capture The Flag challenges. Train and prove your debugging skills. Practice for your next SRE/DevOps interview. Get a full remote Linux server with a problem and fix it.
A visual guide on troubleshooting Kubernetes deploymentsMay 2024 TL;DR: here's a diagram to help you debug your deployments in Kubernetes (and you can download it in the PDF version and PNG). This diagram is also translated into the following languages: 中文, Translated by Addo Zhang (PDF | PNG)Português — Translated by Marcelo Andrade (PDF | PNG)Español mexicano — Translated by Raymundo Escobar & J
Amazon ECS now provides enhanced stopped task error messages for easier troubleshooting - AWS
Amazon ECS now provides enhanced stopped task error messages for easier troubleshooting Amazon Elastic Container Services (Amazon ECS) now makes it easier to troubleshoot task launch failures with enhanced stopped task error messages. When your Amazon ECS task fails to launch, you see the stopped task error messages in the AWS Management Console or in the ECS DescribeTasks API response. With today
Amazon EC2 enables replacing root volumes for quick restoration and troubleshooting
Amazon EC2 announces the Replace Root Volume feature that enables customers to replace the root volume for a running instance. The feature restores the root volume of an instance to its launch state, or to a specific snapshot, without stopping the instance. This allows customers to fix issues, such as root volume corruption or guest operating system network configuration errors, while retaining th
GitHub - testimio/root-cause: 🔍 [DEPRECATED] Root Cause is a tool for troubleshooting Puppeteer and Playwright tests. 🔎
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![GitHub - testimio/root-cause: 🔍 [DEPRECATED] Root Cause is a tool for troubleshooting Puppeteer and Playwright tests. 🔎](https://cdn-ak-scissors.b.st-hatena.com/image/square/6fe1d10ccf2d55d53afc87f624234a5d21b2e9f8/height=288;version=1;width=512/https%3A%2F%2Fopengraph.githubassets.com%2F21e6faff1b2f3e8cd739585893d461bf7f5ea3f748a0d4c7ae0134158f3ed457%2Ftestimio%2Froot-cause)
Game Porting Toolkit - Gaming on M1 Apple silicon Macs and MacBooks, bugs, fixes, compatiblity and troubleshooting guides - AppleGamingWiki
Game Porting Toolkit is Apple's new translation layer released on 6th June, 2023. Game Porting Toolkit (GPTK) combines Wine with Apple's own D3DMetal which supports DirectX 11 and 12[1]. This is a less user-friendly method of installing Windows games on Apple Silicon Macs compared to CrossOver or Parallels, however it unlocks the ability to play many DirectX 12 games. A lot more games work using G
2. 自己紹介 Troubleshooting, Tips, and Tricks 氏名: 齊藤 秀喜(@saito_hideki) 所属: カスタマーエクスペリエンス＆エンゲージメント/レッドハット株式会社 仕事: シニアソフトウェアメンテナンスエンジニア(Ansible Automation Platform) 趣味: Ansibleのトラブルシュート 本セッションは、 Software Design 2020年7月号 に寄稿した連載記事をベースに しています 2 3. Troubleshooting, Tips, and Tricks 本セッションでは、Ansibleを利用した自動化を進めるなかで発生するトラブルを解決するため に必要となるAnsibleの基礎知識と、トラブルシュートの手法について、テクニカルサポートの 現場で培った知見を元に解説します。 ❖ 問題を調査するためのアプ
AWS introduces changes to access denied errors for easier permissions troubleshooting | Amazon Web Services
AWS Security Blog AWS introduces changes to access denied errors for easier permissions troubleshooting To help you more easily troubleshoot your permissions in Amazon Web Services (AWS), we’re introducing additional context in the access denied error messages. We’ll start to introduce this change in September 2021, and gradually make it available in all AWS services over the next few months. If y
Troubleshooting Cards
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I think I should blog more about random troubleshooting sessions, if nothing else it will remind me what steps I took when it inevitably happens again! Okay, here is the first one – why is my xterm opening so slowly? Background I have two similarly specced machines at my desk – my primary workstation running Fedora Linux, and a Windows 11 machine. They share the same monitor and input devices, and
MySQL Query Performance Troubleshooting: Resource-Based Approach
When I speak about MySQL performance troubleshooting (or frankly any other database), I tend to speak about four primary resources which typically end up being a bottleneck and limiting system performance: CPU, Memory, Disk, and Network. It would be great if when seeing what resource is a bottleneck, we could also easily see what queries contribute the most to its usage and optimize or eliminate t
[report]サーバレスアーキテクチャのトラブルシューティングを体験してきた in #reinvent (SPL302-R Troubleshooting serverless applications) | DevelopersIO
こんにちは、大阪オフィスのかずえ@re:Inventです。re:InventにてサーバーレスアプリケーションのトラブルシューティングをするSpotlight Labセッションに参加しましたのでレポートします。 Spotlight Labって？ いわゆる「手を動かす」系のセッションです。会場に入ると、2つモニターが用意された席に案内されます。片方にガイドを表示し、もう片方にAWSコンソールを表示して手を動かす内容です。 会場の雰囲気 講師はここから話します。 セッション紹介文 Monitor and debug an application using AWS X-Ray, Amazon CloudWatch metrics, Amazon CloudWatch Logs, and CloudWatch Logs Insights. Working in teams, use these t
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AWS Support - Troubleshooting in the cloud Workshopをやってみた③
AWS Support - Troubleshooting in the cloudとは AWSが提供するWorkshopの一つで、現在(2024/5)は英語版が提供されています。(フィードバックが多ければ日本語化も対応したいとのこと) クラウドへの移行が進む中でアプリケーションの複雑性も増しています。このワークショップでは様々なワークロードに対応できるトラブルシューティングを学ぶことが出来ます。AWSだけでなく一般的なトラブルシューティングにも繋がる知識が得られるため、非常にためになるWorkshopかと思います。また、セクションごとに分かれているので、興味のある分野だけ実施するということも可能です。 学習できるコンテンツ・コンセプトとしては、CI/CD、IaC、Serverless、コンテナ、Network、Database等のシステムに関わる全てのレイヤが網羅されているので、ぜひ一度
One of our customers recently asked whether it is possible to identify, from the MySQL side, the query that is causing high CPU usage on his system. The usage of simple OS tools to find the culprit has been a widely used technique for a long time by PostgreSQL and Oracle DBAs, but it didn’t work for MySQL as historically we’ve lacked the instrumentation to match an OS thread with an internal proce
Monitoring and troubleshooting serverless data analytics applications | Amazon Web Services
AWS Compute Blog Monitoring and troubleshooting serverless data analytics applications This series is about building serverless solutions in streaming data workloads. The application example used in this series is Alleycat, which allows bike racers to compete with each other virtually on home exercise bikes. The first four posts have explored the architecture behind the application, which is enabl
How do we share troubleshooting skills | Mercari Engineering
Hello, I’m id:koemu, Backend Software Engineer of Merpay Payment Platform Team. Abstract This article is going to explain how we share troubleshooting knowledge in our team and how we further improve troubleshooting skills in various situations, especially on weekends or holidays. Troubleshooting will be difficult if you only learn it by sitting at your desk because there will be few opportunities
WordPressサイトの不具合の原因究明に役立つプラグイン「Health Check ＆ Troubleshooting」 – ワードプレステーマTCD
WordPressサイトの不具合には、さまざまな要因があり、原因究明には複数の検証が必要です。 しかし、利用プラグインが多いと時間もかかりますし、サイト運営上不都合なことも起こります。 （お問い合わせフォームのプラグインを停止すると、一時的にお問い合わせできなくなる等） そこで今回ご紹介するプラグイン「Health Check ＆ Troubleshooting」が役立ちます。運営中のサイトに影響を与えずに様々な検証が可能です。 TCDテーマに関するトラブルシューティングについてはこちらにまとめています。
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A visual guide on troubleshooting Kubernetes deployments
Ansible troubleshooting 101_202007
Troubleshooting: Terminal Lag
A Simple Approach to Troubleshooting High CPU in MySQL
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