DevOps Braga #11: Docker Anatomy
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- Docker containers and virtual machines both enable isolation of applications but use different approaches. - Virtual machines run a full operating system and require virtualization software to abstract the underlying hardware. Docker containers leverage the same kernel as the host operating system and provide isolation through kernel namespaces and cgroups. - Containers are more portable and lightweight since they don't require guest operating systems, but virtual machines have stronger isolation since each has its own kernel.
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and
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Contact me to download the slides
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This document discusses Kubernetes application lifecycle management with a focus on patch management. It begins with a reminder about Docker concepts like namespaces, containers, images and layers. It then provides a brief introduction to Kubernetes, discussing pods, services, deployments and replicasets. The document notes that failures can be quickly fixed during development, but patches are less frequent for production applications. It discusses tools for scanning for Common Vulnerabilities and Exposures (CVEs) and automating updates. Finally, it mentions some difficulties encountered with patching and proposed organizational solutions.
Computer, end program
An introduction to virtualization as a concept, its implementation in VirtualBox and an extension into an OpenStack private cloud. Done at SF State University. See more at http://commons.sfsu.edu/virtualization-and-cloud
WSO2Con USA 2015: Revolutionizing WSO2 PaaS with Kubernetes & App Factory
Containerization is now becoming the most efficient way of developing and deploying software solutions in the cloud. It provides means of running applications with less resource usage, fast startup times, portability across machines, lightweight & layered container images, container image registries, multi-tenancy and many more additional advantages. Docker embraced this space by fulfilling the above requirements and attracting the industry within a very short period of time. Google solved container cluster management features by initiating the Kubernetes project over a decade of experience on running container technologies at scale. Now Kubernetes is in the process of adding more advanced PaaS features such as autoscaling, multicloud or region deployments and composite application model with best of breed ideas and practices from the community.
WSO2 App Factory and WSO2 App Cloud are application Platform as a Service (aPaaS) that provide application development and hosting deployed through these technologies. In this tutorial we will demonstrate how WSO2 products can be run on Kubernetes and the latest WSO2 App Cloud features.
Revolutionizing WSO2 PaaS with Kubernetes & App Factory
WSO2 Con USA 2015 tutorial session on running WSO2 products on Kubernetes and the features of WSO2 App Factory.
Evolution of containers to kubernetes
Kubernetes is an open-source system for automating deployment, scaling, and management of containerized applications. It was originally developed by Google based on years of experience running production workloads at scale. Kubernetes groups containers into logical units called pods and handles tasks like scheduling, health checking, scaling and rollbacks. The main components include a master node that manages the cluster and worker nodes that run application containers scheduled by the master.
Docker-v3.pdf
The document provides an overview of the Docker ecosystem, including its definition, architecture, and status. It describes how Docker allows for applications to be bundled and run in a portable way across various environments using containers. The key components of Docker like images, containers, registries, and Dockerfiles are explained. The document also discusses the container ecosystem and adoption of Docker by various companies and projects. It outlines the security features and best practices for containers. Finally, it provides a brief history of resource management capabilities in Linux that enabled and influenced the development of containers.
Bare-metal, Docker Containers, and Virtualization: The Growing Choices for Cl...
(FR)
Introduction très sympathique autour des environnements Cloud avec un focus particulier sur la virtualisation et les containers (Docker)
(ENG)
Friendly presentation about Cloud solutions with a focus on virtualization and containers (Docker).
Author: Nicholas Weaver – Principal Architect, Intel Corporation
Why you’re going to fail running java on docker!
This document discusses running Java applications on Docker containers and some of the challenges that can cause Java applications to fail when run this way. It begins by listing some big wins of using Docker for developers, such as portability and consistency across environments. It then discusses some potential cons, such as Docker not being a true virtual machine and portability issues. The document provides an overview of containers versus virtualization and the history of containers. It identifies specific challenges for Java applications related to seeing all host system resources rather than being constrained to container limits. Workarounds for memory and CPU limitations in Java are presented. The document emphasizes the importance of configuration for Java applications in containers.
Virtual Container - Docker
This document provides an overview of Docker, including what it is, how it compares to virtual machines and containers, its architecture and features. It discusses that Docker virtualizes using lightweight Linux containers rather than full virtual machines, and how this provides benefits like smaller size and faster performance compared to VMs. It also covers Docker's components like the Docker Engine, Hub and images, and how Docker can be used to develop, ship and run applications on any infrastructure.
stackconf 2020 | Replace your Docker based Containers with Cri-o Kata Contain...
They provide the workload isolation and security advantages of VMs. but at the same time maintain the speed of deployment and usability of containers.by using kata containers, instead of namespace, small virtual machines are created on the kernel and be strongly isolated. The technology of Kata Containers is based on KVM hypervisor. That’s why the level of isolation is equivalent to typical hypervisors. This session will focus on a live production phase when choosing kata instead of docker, and why they are preferable
Although containers provides software-level isolation of resources, the kernel needs to be shared. That’s why the isolation level in terms of security is not so high when compared with hypervisors.This learns to shift from Docker as the de facto standard to Kata containers and learn how to obtain higherl level of security
Docker - Demo on PHP Application deployment
Docker is an open-source project to easily create lightweight, portable, self-sufficient containers from any application. The same container that a developer builds and tests on a laptop can run at scale, in production, on VMs, bare metal, OpenStack clusters, public clouds and more.
In this demo, I will show how to build a Apache image from a Dockerfile and deploy a PHP application which is present in an external folder using custom configuration files.
Linux Containers and Docker SHARE.ORG Seattle 2015
This slide deck shows us an introduction to Linux Containers (LXC) and Docker for Linux on IBM z Systems.
One example of a commercial use of Linux Containers (and Docker) is Red Hat Openshift, which is is also covered at the end.
Docker and kubernetes
Docker allows building portable software that can run anywhere by packaging an application and its dependencies in a standardized unit called a container. Kubernetes is an open-source system for automating deployment, scaling, and management of containerized applications. It groups containers that make up an application into logical units for easy management and discovery. Kubernetes can replicate containers, provide load balancing, coordinate updates between containers, and ensure availability. Defining applications as Kubernetes resources allows them to be deployed and updated easily across a cluster.
Containers and Nutanix - Acropolis Container Services
This presentation was given at the London Nutanix user group (NUG) on Oct 26 by Denis Guyadeen. If you would like to join a NUG, you can find more information here http://bit.ly/NTNXUG - Hope to see you at a community meeting!
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Automate drupal deployments with linux containers, docker and vagrant
Automate drupal deployments with linux containers, docker and vagrant
Dev opsec dockerimage_patch_n_lifecyclemanagement_2019
Dev opsec dockerimage_patch_n_lifecyclemanagement_2019
WSO2Con USA 2015: Revolutionizing WSO2 PaaS with Kubernetes & App Factory
WSO2Con USA 2015: Revolutionizing WSO2 PaaS with Kubernetes & App Factory
Revolutionizing WSO2 PaaS with Kubernetes & App Factory
Revolutionizing WSO2 PaaS with Kubernetes & App Factory
Bare-metal, Docker Containers, and Virtualization: The Growing Choices for Cl...
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stackconf 2020 | Replace your Docker based Containers with Cri-o Kata Contain...
stackconf 2020 | Replace your Docker based Containers with Cri-o Kata Contain...
Linux Containers and Docker SHARE.ORG Seattle 2015
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The document discusses integrating Icinga and Prometheus for system monitoring. It describes the key features and concepts of Prometheus including its data model, metric types, jobs and instances. The presentation covers configuring Prometheus servers, scraping metrics using exporters and the Pushgateway, and implementing custom metrics using the Node Exporter. Combining Icinga and Prometheus allows leveraging Icinga for configuration, alerting and notifications while using Prometheus for collection and querying of metrics.
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Removing Uninteresting Bytes in Software Fuzzing
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In this work, we equipped AFL, a popular fuzzer, with DIAR and examined two critical Linux libraries -- Libxml's xmllint, a tool for parsing xml documents, and Binutil's readelf, an essential debugging and security analysis command-line tool used to display detailed information about ELF (Executable and Linkable Format). Our preliminary results show that AFL+DIAR does not only discover new paths more quickly but also achieves higher coverage overall. This work thus showcases how starting with lean and optimized seeds can lead to faster, more comprehensive fuzzing campaigns -- and DIAR helps you find such seeds.
- These are slides of the talk given at IEEE International Conference on Software Testing Verification and Validation Workshop, ICSTW 2022.
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みなさんこんにちはこれ何文字まで入るの？40文字以下不可とか本当に意味わからないけどこれ限界文字数書いてないからマジでやばい文字数いけるんじゃないの？えこ...
ここ3000字までしか入らないけどタイトルの方がたくさん文字入ると思います。
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BIO: Sostenitrice del software libero e dei formati standard e aperti. È stata un membro attivo dei progetti Fedora e openSUSE e ha co-fondato l'Associazione LibreItalia dove è stata coinvolta in diversi eventi, migrazioni e formazione relativi a LibreOffice. In precedenza ha lavorato a migrazioni e corsi di formazione su LibreOffice per diverse amministrazioni pubbliche e privati. Da gennaio 2020 lavora in SUSE come Software Release Engineer per Uyuni e SUSE Manager e quando non segue la sua passione per i computer e per Geeko coltiva la sua curiosità per l'astronomia (da cui deriva il suo nickname deneb_alpha).
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みなさんこんにちはこれ何文字まで入るの？40文字以下不可とか本当に意味わからないけどこれ限界文字数書いてないからマジでやばい文字数いけるんじゃないの？えこ...
みなさんこんにちはこれ何文字まで入るの？40文字以下不可とか本当に意味わからないけどこれ限界文字数書いてないからマジでやばい文字数いけるんじゃないの？えこ...
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Cosa hanno in comune un mattoncino Lego e la backdoor XZ?
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DevOps Braga #11: Docker Anatomy
- 5. Hardware OS User Space Kernel App Init | Supervisor | PID1
- 12. Container: - OS level virtualization - Kernel is shared - Processes isolated by namespacing - May implement resource sharing mechanisms Examples: - Chroot - FreeBSD Jails - Systemd-nspawn - LXC - Lmctfy - RKT - Docker https://en.wikipedia.org/wiki/Container_(virtualization)
- 13. VHardware OS User Space Kernel App Init Container Runtime Container 1 Container 2 App
- 14. Container runtime? Container processes
- 34. Container runtime? Container processes
- 38. Sources - http://alexander.holbreich.org/docker-components-explained/ - https://medium.com/faun/an-overall-view-on-docker-ecosystem-containers-moby-swarm-linuxkit-containerd-kubernetes-5e4972 a6a1e8 - https://jvns.ca/blog/2016/10/26/running-container-without-docker/ - https://xkcd.com/927/ - https://blog.mobyproject.org/containerd-namespaces-for-docker-kubernetes-and-beyond-d6c43f565084 - https://github.com/opencontainers/runc - https://medium.com/@abbyfuller - https://twitter.com/tekgrrl/status/665799935904915456