CloudNative Days Spring 2021 ONLINE キーノートでの発表資料です。
https://event.cloudnativedays.jp/cndo2021/talks/1071
本セッションでは、DockerとKubernetesのもつ基本的な機能の概要を、コンテナの仕組みをふまえつつイラストを用いて紹介していきます。一般にあまり焦点をあてて取り上げられることは多くありませんが、コンテナの作成や管理を担う低レベルなソフトウェア「コンテナランタイム」も本セッションの中心的なトピックのひとつです。
本セッションは、拙著「イラストで分かるDockerとKubernetes」(技術評論社)の内容を参考にしています。
https://www.amazon.co.jp/dp/4297118378
It's 2021 and containerization has been happening for 7 years already.
In the Java space, there are several ways to package a Java application as a Docker image.
Let's discover them from the Dockerfile to the CNCF Buildpacks, mentioning the Jib way too!
Faster Container Image Distribution on a Variety of Tools with Lazy PullingKohei Tokunaga
Talked at KubeCon + CloudNativeCon North America 2021 Virtual about lazy pulling of container images with eStargz and nydus (October 14, 2021).
https://kccncna2021.sched.com/event/lV2a
P2P Container Image Distribution on IPFS With containerd and nerdctlKohei Tokunaga
Talked at FOSDEM 2022 about IPFS-based P2P image distribution with containerd and nerdctl (Feburary 6, 2022).
https://fosdem.org/2022/schedule/event/container_ipfs_image/
nerdctl is a Docker-compatible CLI of containerd, developed as a subproject of containerd. nerdctl recently added support of P2P image distribution on IPFS. This enables to share container images among hosts without hosting or relying on the registry.
In this session, Kohei, one of the maintainers of nerdctl, will introduce IPFS-based P2P image distribution with containerd and nerdctl. This session will also show the combination of IPFS-based distribution with the existing image distribution techniques, focusing on lazy pulling (eStargz) and image encryption (OCIcrypt). The status of integration work with other tools including Kubernetes will also be shared.
Related blog post: "P2P Container Image Distribution on IPFS With Containerd" . https://medium.com/nttlabs/nerdctl-ipfs-975569520e3d
CloudNative Days Spring 2021 ONLINE キーノートでの発表資料です。
https://event.cloudnativedays.jp/cndo2021/talks/1071
本セッションでは、DockerとKubernetesのもつ基本的な機能の概要を、コンテナの仕組みをふまえつつイラストを用いて紹介していきます。一般にあまり焦点をあてて取り上げられることは多くありませんが、コンテナの作成や管理を担う低レベルなソフトウェア「コンテナランタイム」も本セッションの中心的なトピックのひとつです。
本セッションは、拙著「イラストで分かるDockerとKubernetes」(技術評論社)の内容を参考にしています。
https://www.amazon.co.jp/dp/4297118378
It's 2021 and containerization has been happening for 7 years already.
In the Java space, there are several ways to package a Java application as a Docker image.
Let's discover them from the Dockerfile to the CNCF Buildpacks, mentioning the Jib way too!
Faster Container Image Distribution on a Variety of Tools with Lazy PullingKohei Tokunaga
Talked at KubeCon + CloudNativeCon North America 2021 Virtual about lazy pulling of container images with eStargz and nydus (October 14, 2021).
https://kccncna2021.sched.com/event/lV2a
P2P Container Image Distribution on IPFS With containerd and nerdctlKohei Tokunaga
Talked at FOSDEM 2022 about IPFS-based P2P image distribution with containerd and nerdctl (Feburary 6, 2022).
https://fosdem.org/2022/schedule/event/container_ipfs_image/
nerdctl is a Docker-compatible CLI of containerd, developed as a subproject of containerd. nerdctl recently added support of P2P image distribution on IPFS. This enables to share container images among hosts without hosting or relying on the registry.
In this session, Kohei, one of the maintainers of nerdctl, will introduce IPFS-based P2P image distribution with containerd and nerdctl. This session will also show the combination of IPFS-based distribution with the existing image distribution techniques, focusing on lazy pulling (eStargz) and image encryption (OCIcrypt). The status of integration work with other tools including Kubernetes will also be shared.
Related blog post: "P2P Container Image Distribution on IPFS With Containerd" . https://medium.com/nttlabs/nerdctl-ipfs-975569520e3d
CloudNative Days Tokyo 2020での、lazypullに関する発表資料です。https://event.cloudnativedays.jp/cndt2020/talks/16
Stargz Snapshotterのリポジトリ:
https://github.com/containerd/stargz-snapshotter
Startup Containers in Lightning Speed with Lazy Image DistributionKohei Tokunaga
Talked about lazy container image distribution technologies including containerd + Stargz Snapshotter ( https://github.com/containerd/stargz-snapshotter ) at KubeCon+CloudNativeCon Europe 2020 Virtual.
Starting up Containers Super Fast With Lazy Pulling of ImagesKohei Tokunaga
Talked at Container Plumbing Days about speeding up container startup by lazy pulling images on Kubernetes, containerd, BuildKit, Podman and CRI-O with eStargz and zstd:chunked.
eStargz and Stargz Snapshotter: https://github.com/containerd/stargz-snapshotter
zstd:chunked proposal: https://github.com/containers/storage/pull/775
Patch set to enable lazy pulling on Podman and CRI-O (a.k.a. Additional Layer Store): https://github.com/containers/storage/pull/795
https://github.com/containerd/stargz-snapshotter/pull/281
Build and Run Containers With Lazy Pulling - Adoption status of containerd St...Kohei Tokunaga
Talked about lazy pulling of container images with eStargz and Stargz Snapshotter at FOSDEM 2021.
Details: https://fosdem.org/2021/schedule/event/containers_lazy_pull/
Stargz Snapshotter: https://github.com/containerd/stargz-snapshotter
In this video from the Blue Waters 2018 Symposium, Maxim Belkin presents a tutorial on Containers: Shifter and Singularity on Blue Waters.
Container solutions are a great way to seamlessly execute code on a variety of platforms. Not only they are used to abstract away from the software stack of the underlying operating system, they also enable reproducible computational research. In this mini-tutorial, I will review the process of working with Shifter and Singularity on Blue Waters.
Watch the video: https://wp.me/p3RLHQ-iXO
Learn more: https://bluewaters.ncsa.illinois.edu/blue-waters-symposium-2018
Sign up for our insideHPC Newsletter: http://insidehpc.com/newsletter
KubeCon EU 2016: Secure, Cloud-Native Networking with Project CalicoKubeAcademy
Why does the network matter and why does it need to be simple (the 3am test)? Why should we build networks that scale to the extremes and how can we do that with proven technologies? Finally, how can we secure microservices, why should we bother, and what does this mean for developers and operators?
Sched Link: http://sched.co/6BUR
KubeCon EU 2016: What is OpenStack's role in a Kubernetes world?KubeAcademy
OpenStack is a global open collaboration to produce an open source infrastructure stack. Since its creation 5 years ago, it moved from an open source compute / object storage IaaS solution to about 30 projects providing programmable infrastructure building blocks. How does this project fit in a container-driven future ? How complementary is it with Kubernetes ? In this talk, Thierry Carrez will detail the long-term vision for OpenStack: infrastructure for a programmable infrastructure world and an integration engine for future infrastructure technologies.
Sched Link: http://sched.co/6BYC
This talk gives a brief introduction to OpenStack and Chef, then outlines the current state of deploying OpenStack with Chef. There was a live demo deploying to a Dell rack during the talk.
SCALE 9x, February 25-27 in Los Angeles.
Kubernetes is designed to be an extensible system. But what is the vision for Kubernetes Extensibility? Do you know the difference between webhooks and cloud providers, or between CRI, CSI, and CNI? In this talk we will explore what extension points exist, how they have evolved, and how to use them to make the system do new and interesting things. We’ll give our vision for how they will probably evolve in the future, and talk about the sorts of things we expect the broader Kubernetes ecosystem to build with them.
ArgoCD and Tekton: Match made in Kubernetes heaven | DevNation Tech TalkRed Hat Developers
Tekton Pipelines is an open-source project that focuses on providing a Kubernetes-native, lightweight, easy-to-manage serverless CI/CD framework. Tekton is built for Kubernetes and runs delivery pipelines in pods to scale on demand, and allow teams to fully control their pipelines and dependencies. ArgoCD is a declarative GitOps operator and makes continuous delivery possible by using Git as source of truth for declarative infrastructure and applications. In this session, you will learn how to combine the power of Tekton Pipelines with ArgoCD for a declarative approach to CI/CD based on GitOps principles.
[KubeConEU] Building images efficiently and securely on Kubernetes with BuildKitAkihiro Suda
https://sched.co/MPX5
BuildKit is a modern container image builder that focuses on efficiency and security, mostly known as the backend of Docker 18.06+ and Jessie Frazelle's `img`. (But it is even useful as a standalone tool!)
In this talk, Akihiro Suda, one of founding maintainers of BuildKit, shows practical tips for running BuildKit on Kubernetes clusters.
At Qt Day 2019 in Florence, Italy, I gave a presentation about "Using Qt under LGPLv3".
In the first part, I go through Section "4. Combined Works" and explain the obligations of LGPLv3 in detail.
When you combine your application with the Qt libraries, you can keep closed the source code of the application and publish the application and the Qt libraries under your license terms. You must satisfy the following conditions.
On a physical medium like a USB drive or DVD, you must provide the source code of the Qt libraries, the text of the LGPLv3 and GPLv3, the Copyright notices of the Qt libraries, a description of your modification of the Qt libraries and the installation information. If your application has a user interface, you must display the license texts of the LGPLv3 and GPLv3 and the Copyright notices in this user interface.
The installation information - a.k.a. the anti-tivoisation clause - describes how the user can build a modified version of Qt, how to install this version on the device, and how to run the application with the modified Qt version on the device. If you build a B2B product, you need not provide the installation information.
In the second part, I compare the costs of Qt Commercial and Qt LGPLv3. You must check the licenses for all packages of the (embedded) Linux system, no matter whether you use Qt Commercial or Qt LGPLv3. Qt commercial adds per-developer fees and per-unit fees (royalties). If you use Boot2Qt, Qt for Automation, Qt Safe Renderer or other commercial add-ons, Qt Commercial may well be worth the additional costs.
In the third part, I show how Yocto (bitbake) and Fossology help with the compliance checks. Fossology is a license and copyright scanner.
Paketo Buildpacks : la meilleure façon de construire des images OCI? DevopsDa...Anthony Dahanne
Les Buildpacks existent depuis plus de 10 ans ! D’abord, ils étaient utilisés pour détecter et construire une application avant de la déployer sur certains PaaS. Ensuite, nous avons pu créer des images Docker (OCI) avec leur dernière génération, les Cloud Native Buildpacks (CNCF en incubation). Sont-ils une bonne alternative au Dockerfile ? Que sont les buildpacks Paketo ? Quelles communautés les soutiennent et comment ?
Venez le découvrir lors de cette session ignite
CloudNative Days Tokyo 2020での、lazypullに関する発表資料です。https://event.cloudnativedays.jp/cndt2020/talks/16
Stargz Snapshotterのリポジトリ:
https://github.com/containerd/stargz-snapshotter
Startup Containers in Lightning Speed with Lazy Image DistributionKohei Tokunaga
Talked about lazy container image distribution technologies including containerd + Stargz Snapshotter ( https://github.com/containerd/stargz-snapshotter ) at KubeCon+CloudNativeCon Europe 2020 Virtual.
Starting up Containers Super Fast With Lazy Pulling of ImagesKohei Tokunaga
Talked at Container Plumbing Days about speeding up container startup by lazy pulling images on Kubernetes, containerd, BuildKit, Podman and CRI-O with eStargz and zstd:chunked.
eStargz and Stargz Snapshotter: https://github.com/containerd/stargz-snapshotter
zstd:chunked proposal: https://github.com/containers/storage/pull/775
Patch set to enable lazy pulling on Podman and CRI-O (a.k.a. Additional Layer Store): https://github.com/containers/storage/pull/795
https://github.com/containerd/stargz-snapshotter/pull/281
Build and Run Containers With Lazy Pulling - Adoption status of containerd St...Kohei Tokunaga
Talked about lazy pulling of container images with eStargz and Stargz Snapshotter at FOSDEM 2021.
Details: https://fosdem.org/2021/schedule/event/containers_lazy_pull/
Stargz Snapshotter: https://github.com/containerd/stargz-snapshotter
In this video from the Blue Waters 2018 Symposium, Maxim Belkin presents a tutorial on Containers: Shifter and Singularity on Blue Waters.
Container solutions are a great way to seamlessly execute code on a variety of platforms. Not only they are used to abstract away from the software stack of the underlying operating system, they also enable reproducible computational research. In this mini-tutorial, I will review the process of working with Shifter and Singularity on Blue Waters.
Watch the video: https://wp.me/p3RLHQ-iXO
Learn more: https://bluewaters.ncsa.illinois.edu/blue-waters-symposium-2018
Sign up for our insideHPC Newsletter: http://insidehpc.com/newsletter
KubeCon EU 2016: Secure, Cloud-Native Networking with Project CalicoKubeAcademy
Why does the network matter and why does it need to be simple (the 3am test)? Why should we build networks that scale to the extremes and how can we do that with proven technologies? Finally, how can we secure microservices, why should we bother, and what does this mean for developers and operators?
Sched Link: http://sched.co/6BUR
KubeCon EU 2016: What is OpenStack's role in a Kubernetes world?KubeAcademy
OpenStack is a global open collaboration to produce an open source infrastructure stack. Since its creation 5 years ago, it moved from an open source compute / object storage IaaS solution to about 30 projects providing programmable infrastructure building blocks. How does this project fit in a container-driven future ? How complementary is it with Kubernetes ? In this talk, Thierry Carrez will detail the long-term vision for OpenStack: infrastructure for a programmable infrastructure world and an integration engine for future infrastructure technologies.
Sched Link: http://sched.co/6BYC
This talk gives a brief introduction to OpenStack and Chef, then outlines the current state of deploying OpenStack with Chef. There was a live demo deploying to a Dell rack during the talk.
SCALE 9x, February 25-27 in Los Angeles.
Kubernetes is designed to be an extensible system. But what is the vision for Kubernetes Extensibility? Do you know the difference between webhooks and cloud providers, or between CRI, CSI, and CNI? In this talk we will explore what extension points exist, how they have evolved, and how to use them to make the system do new and interesting things. We’ll give our vision for how they will probably evolve in the future, and talk about the sorts of things we expect the broader Kubernetes ecosystem to build with them.
ArgoCD and Tekton: Match made in Kubernetes heaven | DevNation Tech TalkRed Hat Developers
Tekton Pipelines is an open-source project that focuses on providing a Kubernetes-native, lightweight, easy-to-manage serverless CI/CD framework. Tekton is built for Kubernetes and runs delivery pipelines in pods to scale on demand, and allow teams to fully control their pipelines and dependencies. ArgoCD is a declarative GitOps operator and makes continuous delivery possible by using Git as source of truth for declarative infrastructure and applications. In this session, you will learn how to combine the power of Tekton Pipelines with ArgoCD for a declarative approach to CI/CD based on GitOps principles.
[KubeConEU] Building images efficiently and securely on Kubernetes with BuildKitAkihiro Suda
https://sched.co/MPX5
BuildKit is a modern container image builder that focuses on efficiency and security, mostly known as the backend of Docker 18.06+ and Jessie Frazelle's `img`. (But it is even useful as a standalone tool!)
In this talk, Akihiro Suda, one of founding maintainers of BuildKit, shows practical tips for running BuildKit on Kubernetes clusters.
At Qt Day 2019 in Florence, Italy, I gave a presentation about "Using Qt under LGPLv3".
In the first part, I go through Section "4. Combined Works" and explain the obligations of LGPLv3 in detail.
When you combine your application with the Qt libraries, you can keep closed the source code of the application and publish the application and the Qt libraries under your license terms. You must satisfy the following conditions.
On a physical medium like a USB drive or DVD, you must provide the source code of the Qt libraries, the text of the LGPLv3 and GPLv3, the Copyright notices of the Qt libraries, a description of your modification of the Qt libraries and the installation information. If your application has a user interface, you must display the license texts of the LGPLv3 and GPLv3 and the Copyright notices in this user interface.
The installation information - a.k.a. the anti-tivoisation clause - describes how the user can build a modified version of Qt, how to install this version on the device, and how to run the application with the modified Qt version on the device. If you build a B2B product, you need not provide the installation information.
In the second part, I compare the costs of Qt Commercial and Qt LGPLv3. You must check the licenses for all packages of the (embedded) Linux system, no matter whether you use Qt Commercial or Qt LGPLv3. Qt commercial adds per-developer fees and per-unit fees (royalties). If you use Boot2Qt, Qt for Automation, Qt Safe Renderer or other commercial add-ons, Qt Commercial may well be worth the additional costs.
In the third part, I show how Yocto (bitbake) and Fossology help with the compliance checks. Fossology is a license and copyright scanner.
Paketo Buildpacks : la meilleure façon de construire des images OCI? DevopsDa...Anthony Dahanne
Les Buildpacks existent depuis plus de 10 ans ! D’abord, ils étaient utilisés pour détecter et construire une application avant de la déployer sur certains PaaS. Ensuite, nous avons pu créer des images Docker (OCI) avec leur dernière génération, les Cloud Native Buildpacks (CNCF en incubation). Sont-ils une bonne alternative au Dockerfile ? Que sont les buildpacks Paketo ? Quelles communautés les soutiennent et comment ?
Venez le découvrir lors de cette session ignite
Rob Hirschfeld talk at the 2017 KubeCon in Austin, TX. In this talk he presents an Immutable Bootstrap demo of Kubernetes using Kubeadm to provision on bare metal. Talk URL http://sched.co/CU8h.
Moving to Kubernetes - Tales from SoundCloudKubeAcademy
Like many other companies, SoundCloud migrated to a microservices architecture over the last couple of years. Today, there are several hundreds of services with thousands of container instances running in our datacenters. In this talk, I’ll give a brief overview of the current state of our infrastructure and how a typical service is deployed and can communicate with other services.
To make it simple for teams to prototype, deploy and operate several services on their own, we built our own container runtime environment, called Bazooka. I’ll give an overview of Bazooka, its features and design decisions, but also the shortcomings and problems we faced over time:
automated scheduling.
resource management for services with different load profiles.
monitoring of highly dynamic deploys or the requirements of stateful services.
With the rise of Docker and a general shift towards container-based environments, SoundCloud started to build more and more of its development workflows based on these new solutions. When it became clear that our existing system needed an overhaul to support additional requirements and overcome its shortcomings, we started to look into other container management technologies and available open-source options. In the second part, I’ll present our evaluation process and some of the requirements we defined for a suitable candidate. The attendee will learn which features and properties of Kubernetes make it the ideal choice for us.
Finally, I’ll talk about the current state of our Kubernetes migration, some challenges we need to solve to integrate Kubernetes in our existing infrastructure, and present some open issues we are working on in order to eventually deploy and run all our services with Kubernetes.
KubeCon schedule link: http://sched.co/4Wd0
Windows Kernel Exploitation : This Time Font hunt you down in 4 bytesPeter Hlavaty
In our recent work we targeted also win32k, what seems to be fruit giving target. @promised_lu made our own TTF-fuzzer which comes with bunch of results in form of gigabytes of crashes and various bugs. Fortunately windows make great work and in February most of our bugs was dead - patched, but not all of them…
Whats left were looking as seemingly unexploitable kernel bugs with ridiculous conditions. We decided to check it out, and finally combine it with our user mode bug & emet bypass. Through IE & flash we break down system and pointed out at weak points in defensive mechanism.
In this talk we will present our research dedicated for pwn2own event this year. We will describe kernel part of exploit in detail*, including bug description, resulting memory corruption conditions & caveats up to final pwn via one of our TTF bugs.
Throughout the talk we will describe how to break various exploit mitigations in windows kernel and why it is possible. We will introduce novel kernel exploitation techniques breaking all what stands { KASLR, SMEP, even imaginary SMAP or CFG } and bring you SYSTEM exec (from kernel driver to system calc).
* unfortunately bug was not fixed at the time of talk, so we do not exposed details about TTF vulnerability, and we skipped directly to some challenges during exploitation, and demonstrate how OS design can overpower introduced exploit mitigations.
There and Back Again (My DevOps journey) - DevOps Days Copenhagen 2018Giulio Vian
devopsdays Copenhagen
April 24-25, 2018
https://www.devopsdays.org/events/2018-copenhagen/
In this talk, you will hear about the DevOps journey in our company, from the initial brown-field all-manual state, to our current partially automated situation and the strategic destination of a fully automated and monitored process.
In equilibrium between an high-level view and useful practical tips, we will touch on what informed our decisions, in terms of priorities and technologies, some lessons learned in setting up Infrastructure-as-Code using Terraform for Azure, and how the legacy constraints helped or hindered.
Recreating "The Clock" with Machine Learning and Web ScrapingKP Kaiser
Slides from my 2019 PyGotham talk.
“The Clock” is a 2010 art installation by Christian Marclay. It is an experimental film that features over 12,000 individual shots of clocks from movies and television, edited in such a way that the film itself functions as a clock.
In this talk, we’ll use modern machine learning models and video web scraping to recreate the concept behind “The Clock”. We’ll use Kubernetes to orchestrate building a modern video scraper, capable of getting around the walls of YouTube and Instagram to grab user content.
Basics of Kubernetes on BOSH: Run Production-grade Kubernetes on the SDDCMatt McNeeney
Kubernetes is the leading container orchestration framework today. In this session, we'll discuss Kubernetes and its Day 2 operational needs, and provide an overview of Kubo, or Kubernetes on BOSH. Kubo is an open source project contributed by Pivotal and Google to Cloud Foundry Foundation. We'll then talk about the newly released Pivotal Container Service, PKS, and why Google, VMware and Pivotal have teamed up to create a new cloud-native platform for containerised workloads.
Simplifying Real Time Data Analytics with Docker, IoT & CloudAjeet Singh Raina
Last Thursday, I travelled to Dehradun(around 1500 miles) for 1 day session on " The Pico project" as well as Docker workshop on Raspberry Pi. It was an amazing experience where I got chance to interact with the University students for the first time.
Build and Monitor Machine Learning Services in KubernetesKP Kaiser
There are many options to build and deploy machine learning models to production at scale. We’ll walk through the growing suite of tools to centralize model building and deployment at scale, with technologies like Kubeflow, Seldon and TensorRT. Finally, we’ll address techniques for monitoring these new services.
You’ll walk away with an understanding of a complete development lifecycle for scalable machine learning services.
Similar to 【CNDO2021】Calicoのデプロイをミスって本番クラスタを壊しそうになった話 (20)
We describe the deployment and use of Globus Compute for remote computation. This content is aimed at researchers who wish to compute on remote resources using a unified programming interface, as well as system administrators who will deploy and operate Globus Compute services on their research computing infrastructure.
Navigating the Metaverse: A Journey into Virtual Evolution"Donna Lenk
Join us for an exploration of the Metaverse's evolution, where innovation meets imagination. Discover new dimensions of virtual events, engage with thought-provoking discussions, and witness the transformative power of digital realms."
Introducing Crescat - Event Management Software for Venues, Festivals and Eve...Crescat
Crescat is industry-trusted event management software, built by event professionals for event professionals. Founded in 2017, we have three key products tailored for the live event industry.
Crescat Event for concert promoters and event agencies. Crescat Venue for music venues, conference centers, wedding venues, concert halls and more. And Crescat Festival for festivals, conferences and complex events.
With a wide range of popular features such as event scheduling, shift management, volunteer and crew coordination, artist booking and much more, Crescat is designed for customisation and ease-of-use.
Over 125,000 events have been planned in Crescat and with hundreds of customers of all shapes and sizes, from boutique event agencies through to international concert promoters, Crescat is rigged for success. What's more, we highly value feedback from our users and we are constantly improving our software with updates, new features and improvements.
If you plan events, run a venue or produce festivals and you're looking for ways to make your life easier, then we have a solution for you. Try our software for free or schedule a no-obligation demo with one of our product specialists today at crescat.io
Quarkus Hidden and Forbidden ExtensionsMax Andersen
Quarkus has a vast extension ecosystem and is known for its subsonic and subatomic feature set. Some of these features are not as well known, and some extensions are less talked about, but that does not make them less interesting - quite the opposite.
Come join this talk to see some tips and tricks for using Quarkus and some of the lesser known features, extensions and development techniques.
AI Genie Review: World’s First Open AI WordPress Website CreatorGoogle
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See My Other Reviews Article:
(1) TubeTrivia AI Review: https://sumonreview.com/tubetrivia-ai-review
(2) SocioWave Review: https://sumonreview.com/sociowave-review
(3) AI Partner & Profit Review: https://sumonreview.com/ai-partner-profit-review
(4) AI Ebook Suite Review: https://sumonreview.com/ai-ebook-suite-review
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Code reviews are vital for ensuring good code quality. They serve as one of our last lines of defense against bugs and subpar code reaching production.
Yet, they often turn into annoying tasks riddled with frustration, hostility, unclear feedback and lack of standards. How can we improve this crucial process?
In this session we will cover:
- The Art of Effective Code Reviews
- Streamlining the Review Process
- Elevating Reviews with Automated Tools
By the end of this presentation, you'll have the knowledge on how to organize and improve your code review proces
In the ever-evolving landscape of technology, enterprise software development is undergoing a significant transformation. Traditional coding methods are being challenged by innovative no-code solutions, which promise to streamline and democratize the software development process.
This shift is particularly impactful for enterprises, which require robust, scalable, and efficient software to manage their operations. In this article, we will explore the various facets of enterprise software development with no-code solutions, examining their benefits, challenges, and the future potential they hold.
Need for Speed: Removing speed bumps from your Symfony projects ⚡️Łukasz Chruściel
No one wants their application to drag like a car stuck in the slow lane! Yet it’s all too common to encounter bumpy, pothole-filled solutions that slow the speed of any application. Symfony apps are not an exception.
In this talk, I will take you for a spin around the performance racetrack. We’ll explore common pitfalls - those hidden potholes on your application that can cause unexpected slowdowns. Learn how to spot these performance bumps early, and more importantly, how to navigate around them to keep your application running at top speed.
We will focus in particular on tuning your engine at the application level, making the right adjustments to ensure that your system responds like a well-oiled, high-performance race car.
Enterprise Resource Planning System includes various modules that reduce any business's workload. Additionally, it organizes the workflows, which drives towards enhancing productivity. Here are a detailed explanation of the ERP modules. Going through the points will help you understand how the software is changing the work dynamics.
To know more details here: https://blogs.nyggs.com/nyggs/enterprise-resource-planning-erp-system-modules/
OpenMetadata Community Meeting - 5th June 2024OpenMetadata
The OpenMetadata Community Meeting was held on June 5th, 2024. In this meeting, we discussed about the data quality capabilities that are integrated with the Incident Manager, providing a complete solution to handle your data observability needs. Watch the end-to-end demo of the data quality features.
* How to run your own data quality framework
* What is the performance impact of running data quality frameworks
* How to run the test cases in your own ETL pipelines
* How the Incident Manager is integrated
* Get notified with alerts when test cases fail
Watch the meeting recording here - https://www.youtube.com/watch?v=UbNOje0kf6E
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Discover the essential features to incorporate in your Winzo clone app to boost business growth, enhance user engagement, and drive revenue. Learn how to create a compelling gaming experience that stands out in the competitive market.
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See My Other Reviews Article:
(1) TubeTrivia AI Review: https://sumonreview.com/tubetrivia-ai-review
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Software Engineering, Software Consulting, Tech Lead, Spring Boot, Spring Cloud, Spring Core, Spring JDBC, Spring Transaction, Spring MVC, OpenShift Cloud Platform, Kafka, REST, SOAP, LLD & HLD.
Atelier - Innover avec l’IA Générative et les graphes de connaissancesNeo4j
Atelier - Innover avec l’IA Générative et les graphes de connaissances
Allez au-delà du battage médiatique autour de l’IA et découvrez des techniques pratiques pour utiliser l’IA de manière responsable à travers les données de votre organisation. Explorez comment utiliser les graphes de connaissances pour augmenter la précision, la transparence et la capacité d’explication dans les systèmes d’IA générative. Vous partirez avec une expérience pratique combinant les relations entre les données et les LLM pour apporter du contexte spécifique à votre domaine et améliorer votre raisonnement.
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2. WHO I AM?
- Name: Kawabe Katsuya
- Team: CyberAgent Group Infrastructure Unit
- Position: Software, Infra Engineer, 2020 New Graduate
- Hobby: Music, Comic
ABOUT US
@KKawabe108
3. 1. What Happen
2. How To Resolve
TABLE
CONTENTS
問題発覚編: calico のデプロイをミスったことに
よって発生した事象について
解決編: プロダクト側への説明、監視の見直し、
再発防止への取り組み
8. What Happened
Ingress とノードの
BGP ピアがダウンしたというアラートが大量発生
Kubectl get po -A をすると Master ノードに乗っている
Pod がほとんど Evicted されていた 😇
Master ノードに ssh すると、どうやらディスク領域が
圧迫され、Eviction の閾値に到達していた
9. What Happened: Ingress の実装
Node
calico-node
Node
exporter
Node
calico-node
Node
calico-node
nginx ctrl nginx ctrl nginx ctrl
Node
calico-node
Node
calico-node
calico-node
exporter exporter
Big IP VS
BGP Routing
10. What Happened: Ingress の実装
Node
calico-node
Node
exporter
Node
calico-node
Node
calico-node
nginx ctrl nginx ctrl nginx ctrl
Node
calico-node
Node
calico-node
calico-node
exporter exporter
Big IP VS
BGP Routing
BGP Link is
Down
18. How To Resolve
calico-kube-controllers というコンポーネント
をデプロイしていなかった
calico-node の ClusterRole の権限が
間違っていた
図参照: https://docs.projectcalico.org/reference/architecture/overview
19. How To Resolve: 反省点
calico-node に delete の権限を渡していないせいで
GCが発生していなかった
元々、3.8 のマニフェストをベースに弄っていたので
発生したミス
新しいマニフェストを公式から落としてそれをベースにすれば
今回のようなミスは発生しなかった
20. How To Resolve : プロダクトへの対応
今回、アラートが上がったのは監視用に立てているクラスタでプロダクトが利用しているクラスタでは
Pod がそこまで頻繁に作成削除されていなかったので、肥大化はディスクに影響が出るほどではなかった
すぐに事情を説明して、マニフェストの修正を行なった
発生するリスクは抑えたということを確認して、対応終了
21. How To Resolve: 監視基盤の対応
監視基盤で全クラスタで etcd の db size
と、オブジェクト数を監視するようにした
ディスクサイズのアラートが
Eviction Policy と同等だったので、
それより低く設定し直す
22. How To Resolve: calico のアップデートについて
極力アップデートしなくていいならしない
マニフェストは基本公式のものをそのまま使うので問題はないはず (Pod CIDR や IPIP の有効化フラグぐらい)
マニフェストが大きいので修正のレビューは三重チェックで丁度いい (それぐらいCNIはクリティカル)