This document provides an introduction to Docker, including:
- Docker allows developers to package applications with all dependencies into standardized units called containers that can run on any infrastructure.
- Docker uses namespaces and control groups to provide isolation and security between containers while allowing for more efficient use of resources than virtual machines.
- The Docker architecture includes images which are templates for creating containers, a Dockerfile to automate image builds, and Docker Hub for sharing images.
- Kubernetes is an open-source platform for automating deployment and management of containerized applications across clusters of hosts.
This document provides an introduction to Docker and containers. It discusses why containers are useful for software deployment given changes in the industry. Containers provide lightweight isolation of applications and their dependencies. Docker is a tool that manages containers running on the same operating system kernel. Key Docker components include the client, server, images, and containers. Popular use cases of Docker include Google running over a billion containers per week and Finnish Railways saving 50% of cloud costs with Docker.
Docker is an open source containerization platform that allows applications to be easily deployed and run across various operating systems and cloud environments. It allows applications and their dependencies to be packaged into standardized executable units called containers that can be run anywhere. Containers are more portable and provide better isolation than virtual machines, making them useful for microservices architecture, continuous integration/deployment, and cloud-native applications.
This document provides an introduction to Docker and discusses:
- The challenges of managing applications across different environments which Docker aims to solve through lightweight containers.
- An overview of Docker concepts including images, containers, the Docker workflow and networking.
- How Docker Compose allows defining and running multi-container applications and Docker Swarm enables orchestrating containers across a cluster.
- The open container ecosystem including the Open Container Initiative for standardization.
The purpose of this solution is to go over the Docker basics which explain containers, images, how they work, where to find them, the architecture (client, daemon), the difference between Docker and VMs, and we will see Docker and an image and see some commands.
Docker provides tools for building and running containerized applications. The Docker Engine manages Docker objects like images, containers, networks and volumes. Docker Desktop is for Mac/Windows and includes Docker Engine and other tools. Docker Compose defines multi-container apps. Docker Hub is a public registry and Docker Swarm manages clusters of Docker Engines.
Docker allows applications to be packaged with all their dependencies and run consistently across computing environments. It provides isolation, security and portability for applications. This document discusses setting up an Eh Avatar application to run in Docker containers for Postgres, Redis and the application itself. It covers bringing up the dependency containers, building a custom Docker image for the application, and using Docker Compose to define and run the multi-container application. While this provides an introduction, there is still more to learn about optimizing Docker usage and avoiding common pitfalls.
This document provides an introduction to Docker and containers. It discusses why containers are useful for software deployment given changes in the industry. Containers provide lightweight isolation of applications and their dependencies. Docker is a tool that manages containers running on the same operating system kernel. Key Docker components include the client, server, images, and containers. Popular use cases of Docker include Google running over a billion containers per week and Finnish Railways saving 50% of cloud costs with Docker.
Docker is an open source containerization platform that allows applications to be easily deployed and run across various operating systems and cloud environments. It allows applications and their dependencies to be packaged into standardized executable units called containers that can be run anywhere. Containers are more portable and provide better isolation than virtual machines, making them useful for microservices architecture, continuous integration/deployment, and cloud-native applications.
This document provides an introduction to Docker and discusses:
- The challenges of managing applications across different environments which Docker aims to solve through lightweight containers.
- An overview of Docker concepts including images, containers, the Docker workflow and networking.
- How Docker Compose allows defining and running multi-container applications and Docker Swarm enables orchestrating containers across a cluster.
- The open container ecosystem including the Open Container Initiative for standardization.
The purpose of this solution is to go over the Docker basics which explain containers, images, how they work, where to find them, the architecture (client, daemon), the difference between Docker and VMs, and we will see Docker and an image and see some commands.
Docker provides tools for building and running containerized applications. The Docker Engine manages Docker objects like images, containers, networks and volumes. Docker Desktop is for Mac/Windows and includes Docker Engine and other tools. Docker Compose defines multi-container apps. Docker Hub is a public registry and Docker Swarm manages clusters of Docker Engines.
Docker allows applications to be packaged with all their dependencies and run consistently across computing environments. It provides isolation, security and portability for applications. This document discusses setting up an Eh Avatar application to run in Docker containers for Postgres, Redis and the application itself. It covers bringing up the dependency containers, building a custom Docker image for the application, and using Docker Compose to define and run the multi-container application. While this provides an introduction, there is still more to learn about optimizing Docker usage and avoiding common pitfalls.
Docker allows you to package applications with their dependencies into standardized units called containers that can run on any Linux server. Containers are more portable and efficient than virtual machines, starting in milliseconds and using less disk space. Docker makes it easy to deploy and run applications without having to rebuild environments and guarantees that an application will run the same regardless of the infrastructure it is running on.
Docker is a tool that allows applications to run in isolated containers to make them portable and consistent across environments. It provides benefits like easy developer onboarding, eliminating application conflicts, and consistent deployments. Docker tools include the Docker Engine, Docker Client, Docker Compose, and Docker Hub. Key concepts are images which are templates for containers, and containers which are where the code runs based on an image. The document outlines how to build custom images from Dockerfiles, communicate between containers using linking or networks, and deploy containers using Docker Compose or in the cloud.
What Is A Docker Container? | Docker Container Tutorial For Beginners| Docker...Simplilearn
This presentation on Docker Container will help you understand what is Docker, the architecture of Docker, what is a Docker Container, how to create a Docker Container, benefits of Docker Container, basic commands of Containers and you will also see a demo on creating Docker Container. Docker is a very lightweight software container and containerization platform. Docker containers provide a way to run software in isolation. It is an open source platform that helps to package an application and its dependencies into a Docker container for the development and deployment of software and a Docker COntainer is a portable executable package which includes applications and their dependencies. With Docker Containers, applications can work efficiently in different computer environments.
Below DevOps tools are explained in this Docker Container presentation:
1. What is Docker?
2. The architecture of Docker?
3. What is a Docker Container?
4. How to create a Docker Container?
5. Benefits of Docker Containers
6. Basic commands of Containers
Simplilearn's DevOps Certification Training Course will prepare you for a career in DevOps, the fast-growing field that bridges the gap between software developers and operations. You’ll become an expert in the principles of continuous development and deployment, automation of configuration management, inter-team collaboration and IT service agility, using modern DevOps tools such as Git, Docker, Jenkins, Puppet and Nagios. DevOps jobs are highly paid and in great demand, so start on your path today.
Why learn DevOps?
Simplilearn’s DevOps training course is designed to help you become a DevOps practitioner and apply the latest in DevOps methodology to automate your software development lifecycle right out of the class. You will master configuration management; continuous integration deployment, delivery and monitoring using DevOps tools such as Git, Docker, Jenkins, Puppet and Nagios in a practical, hands-on and interactive approach. The DevOps training course focuses heavily on the use of Docker containers, a technology that is revolutionizing the way apps are deployed in the cloud today and is a critical skillset to master in the cloud age.
After completing the DevOps training course you will achieve hands-on expertise in various aspects of the DevOps delivery model. The practical learning outcomes of this Devops training course are:
An understanding of DevOps and the modern DevOps toolsets
The ability to automate all aspects of a modern code delivery and deployment pipeline using:
1. Source code management tools
2. Build tools
3. Test automation tools
4. Containerization through Docker
5. Configuration management tools
6. Monitoring tools
DevOps jobs are the third-highest tech role ranked by employer demand on Indeed.com but have the second-highest talent deficit.
Learn more at https://www.simplilearn.com/cloud-computing/devops-practitioner-certification-training
Docker is an open platform for developing, shipping, and running applications. It allows packaging applications into standardized units for software called containers that can run on any infrastructure. The key components of Docker include images, containers, a client-server architecture using Docker Engine, and registries for storing images. Images act as templates for creating containers, which are run-time instances of images. Docker provides portability and isolation of applications using containers.
This document provides an overview of Docker and the author's experience. It discusses key Docker concepts like images, containers, the Dockerfile and Docker Engine. It also summarizes Docker benefits like portability, scalability and efficiency. Components like Docker Hub, Docker Machine and orchestration tools are briefly introduced. Security considerations and using Docker in production are also mentioned.
Docker allows building, shipping, and running applications in portable containers. It packages an application with all its dependencies into a standardized unit for software development. Major cloud providers and companies support and use Docker in production. Containers are more lightweight and efficient than virtual machines, providing faster launch times and allowing thousands to run simultaneously on the same server. Docker simplifies distributing applications and ensures a consistent environment.
Docker is a system for running applications in isolated containers. It addresses issues with traditional virtual machines by providing lightweight containers that share resources and allow applications to run consistently across different environments. Docker eliminates inconsistencies in development, testing and production environments. It allows applications and their dependencies to be packaged into a standardized unit called a container that can run on any Linux server. This makes applications highly portable and improves efficiency across the entire development lifecycle.
Docker Explained | What Is A Docker Container? | Docker Simplified | Docker T...Edureka!
( ** DevOps Training: https://www.edureka.co/devops ** )
This Docker Explained PPT will explain to you the fundamentals of Docker with a hands-on. Below are the topics covered in the PPT:
Problems Before Docker
Virtualization vs Containerization
What is Docker?
How does Docker work?
Docker Components
Docker Architecture
Docker Compose & Docker Swarm
Hands-On
What is Docker | Docker Tutorial for Beginners | Docker Container | DevOps To...Edureka!
This DevOps Docker Tutorial on what is docker ( Docker Tutorial Blog Series: https://goo.gl/32kupf ) will help you understand how to use Docker Hub, Docker Images, Docker Container & Docker Compose. This tutorial explains Docker's working Architecture and Docker Engine in detail. This Docker tutorial also includes a Hands-On session around Docker by the end of which you will learn to pull a centos Docker Image and spin your own Docker Container. You will also see how to launch multiple docker containers using Docker Compose. Finally, it will also tell you the role Docker plays in the DevOps life-cycle.
The Hands-On session is performed on an Ubuntu-64bit machine in which Docker is installed.
1. Docker allows creating lightweight virtual environments called containers that package code and dependencies together. Containers are more portable than virtual machines.
2. Docker uses images to build containers. Images are immutable templates and containers are instances of images that can be run. The Dockerfile defines how to build images.
3. Common Docker commands include docker pull to download images, docker run to create and start containers, docker exec to run commands in running containers, and docker commit to save container changes as new images.
Docker allows users to package applications with all their dependencies into standardized units called containers that can run on any Linux server. Containers are more lightweight than virtual machines because they share the host operating system and only require the additional libraries and binaries needed to run the application rather than a full guest operating system. Docker uses containers and an image format to deploy applications in a consistent manner across development, testing, and production. The document provides examples of how to define a Dockerfile to build an image, run containers from images using docker-compose, and common Docker commands.
Docker is a technology that uses lightweight containers to package applications and their dependencies in a standardized way. This allows applications to be easily deployed across different environments without changes to the installation procedure. Docker simplifies DevOps tasks by enabling a "build once, ship anywhere" model through standardized environments and images. Key benefits include faster deployments, increased utilization of resources, and easier integration with continuous delivery and cloud platforms.
- The document introduces Docker, explaining that it provides standardized packaging for software and dependencies to isolate applications and share the same operating system kernel.
- Key aspects of Docker are discussed, including images which are layered and can be version controlled, containers which start much faster than virtual machines, and Dockerfiles which provide build instructions for images.
- The document demonstrates Docker's build, ship, and run workflow through examples of building a simple image and running a container, as well as using Docker Compose to run multi-container applications like WordPress. It also introduces Docker Swarm for clustering multiple Docker hosts.
Introduction to Docker presented by MANAOUIL Karim at the Shellmates's Hack.INI event. The teams deployed were assisted to deploy a Python Flask application behind an Nginx load balancer.
Docker is a tool that allows users to package applications into containers to run on Linux servers. Containers provide isolation and resource sharing benefits compared to virtual machines. Docker simplifies deployment of containers by adding images, repositories and version control. Popular components include Dockerfiles to build images, Docker Hub for sharing images, and Docker Compose for defining multi-container apps. Docker has gained widespread adoption due to reducing complexity of managing containers across development and operations teams.
The document introduces Docker, a container platform. It discusses how Docker addresses issues with deploying different PHP projects that have varying version requirements by allowing each project to run isolated in its own container with specified dependencies. It then covers key Docker concepts like images, containers, linking, exposing ports, volumes, and Dockerfiles. The document highlights advantages of Docker like enabling applications to run anywhere without compatibility issues and making deployment more efficient.
Docker Tutorial For Beginners | What Is Docker And How It Works? | Docker Tut...Simplilearn
This presentation about Docker tutorial will help you understand what is Docker, advantages of Docker, how does Docker work, components of Docker, virtual machine vs Docker, advanced concepts in Docker, basic Docker commands along with a demo. A Docker is an OS-level virtualization software that enables developers and IT administrators to create, deploy and run applications in a Docker container with all their dependencies. It is said to be a very light-weight software container and containerization platform. Docker engine or Docker is a client-server application that builds and executes using Docker components. Rapid deployment, portability, better efficiency, faster configuration, scalability, security are some of the advantages you get by using Docker.
Below topics are explained in this Docker presentation:
1. Virtual machine vs Docker
2. What is Docker?
3. Advantages of Docker
4. How does Docker work?
5. Components of Docker
6. Advanced concepts in Docker
7. Basic Docker commands
Why learn DevOps?
Simplilearn’s DevOps training course is designed to help you become a DevOps practitioner and apply the latest in DevOps methodology to automate your software development lifecycle right out of the class. You will master configuration management; continuous integration deployment, delivery and monitoring using DevOps tools such as Git, Docker, Jenkins, Puppet and Nagios in a practical, hands-on and interactive approach. The DevOps training course focuses heavily on the use of Docker containers, a technology that is revolutionizing the way apps are deployed in the cloud today and is a critical skillset to master in the cloud age.
After completing the DevOps training course you will achieve hands-on expertise in various aspects of the DevOps delivery model. The practical learning outcomes of this Devops training course are:
An understanding of DevOps and the modern DevOps toolsets
The ability to automate all aspects of a modern code delivery and deployment pipeline using:
1. Source code management tools
2. Build tools
3. Test automation tools
4. Containerization through Docker
5. Configuration management tools
6. Monitoring tools
Who should take this course?
DevOps career opportunities are thriving worldwide. DevOps was featured as one of the 11 best jobs in America for 2017, according to CBS News, and data from Payscale.com shows that DevOps Managers earn as much as $122,234 per year, with DevOps engineers making as much as $151,461. DevOps jobs are the third-highest tech role ranked by employer demand on Indeed.com but have the second-highest talent deficit.
This DevOps training course will be of benefit the following professional roles:
1. Software Developers
2. Technical Project Managers
3. Architects
4. Operations Support
5. Deployment engineers
6. IT managers
7. Development managers
You can learn more at https://www.simplilearn.com/cloud-computing/devops-practitioner-certification-training
Docker is an open platform for developing, shipping, and running distributed applications. It allows applications to be shipped and run in lightweight containers that can run on any Linux server. Docker uses operating-system-level virtualization and cgroups isolation to deliver lightweight containers quickly. Key features of Docker include portability, lightweight containers that share resources and isolate processes, and automated workflows.
This document provides an introduction to Docker. It begins by introducing the presenter and agenda. It then explains that containers are not virtual machines and discusses the differences in architecture and benefits. It covers the basic Docker workflow of building, shipping, and running containers. It discusses Docker concepts like images, containers, and registries. It demonstrates basic Docker commands. It shows how to define a Dockerfile and build an image. It discusses data persistence using volumes. It covers using Docker Compose to define and run multi-container applications and Docker Swarm for clustering. It provides recommendations for getting started with Docker at different levels.
The document provides information on how to write a Dockerfile, including:
- What a Dockerfile is and its purpose of providing instructions to build a Docker image
- Common Dockerfile instructions like FROM, RUN, COPY, EXPOSE, and CMD
- Best practices for writing Dockerfiles such as making images smaller, choosing the correct build context, leveraging the build cache, and ordering instructions
- Additional topics covered include the Docker build context, Dockerfile format, and tools like Docker BuildKit and Docker Scan. The presentation concludes with a demonstration of Dockerfiles.
Immutable infrastructure with Docker and EC2dotCloud
This document discusses Gilt's strategy of using immutable infrastructure with Docker and EC2 to enable continuous delivery and minimize risk when deploying new software versions. Some key points made include:
- Gilt builds Docker containers for each new application version, creates a new "stack" of infrastructure to run the container, and uses incremental rollout and automated rollback to reduce risk.
- Immutable infrastructure emerges naturally with Docker since each version requires new containers and infrastructure rather than updating existing instances.
- Automating deployment, rollback, and incremental rollout across new infrastructure stacks reduces probability, cost and occurrences of failures when deploying new versions.
- Instant rollback is possible by moving traffic back to the previous version's infrastructure if
This document summarizes the key events and announcements from Day 1 of DockerCon. It highlights the large number of attendees, keynotes from Red Hat executives, and the official launch of Docker Engine 1.0 and Docker Hub 1.0. It also thanks the many contributors, users, partners and open source projects that have helped Docker grow rapidly in the last 15 months since its launch.
Docker allows you to package applications with their dependencies into standardized units called containers that can run on any Linux server. Containers are more portable and efficient than virtual machines, starting in milliseconds and using less disk space. Docker makes it easy to deploy and run applications without having to rebuild environments and guarantees that an application will run the same regardless of the infrastructure it is running on.
Docker is a tool that allows applications to run in isolated containers to make them portable and consistent across environments. It provides benefits like easy developer onboarding, eliminating application conflicts, and consistent deployments. Docker tools include the Docker Engine, Docker Client, Docker Compose, and Docker Hub. Key concepts are images which are templates for containers, and containers which are where the code runs based on an image. The document outlines how to build custom images from Dockerfiles, communicate between containers using linking or networks, and deploy containers using Docker Compose or in the cloud.
What Is A Docker Container? | Docker Container Tutorial For Beginners| Docker...Simplilearn
This presentation on Docker Container will help you understand what is Docker, the architecture of Docker, what is a Docker Container, how to create a Docker Container, benefits of Docker Container, basic commands of Containers and you will also see a demo on creating Docker Container. Docker is a very lightweight software container and containerization platform. Docker containers provide a way to run software in isolation. It is an open source platform that helps to package an application and its dependencies into a Docker container for the development and deployment of software and a Docker COntainer is a portable executable package which includes applications and their dependencies. With Docker Containers, applications can work efficiently in different computer environments.
Below DevOps tools are explained in this Docker Container presentation:
1. What is Docker?
2. The architecture of Docker?
3. What is a Docker Container?
4. How to create a Docker Container?
5. Benefits of Docker Containers
6. Basic commands of Containers
Simplilearn's DevOps Certification Training Course will prepare you for a career in DevOps, the fast-growing field that bridges the gap between software developers and operations. You’ll become an expert in the principles of continuous development and deployment, automation of configuration management, inter-team collaboration and IT service agility, using modern DevOps tools such as Git, Docker, Jenkins, Puppet and Nagios. DevOps jobs are highly paid and in great demand, so start on your path today.
Why learn DevOps?
Simplilearn’s DevOps training course is designed to help you become a DevOps practitioner and apply the latest in DevOps methodology to automate your software development lifecycle right out of the class. You will master configuration management; continuous integration deployment, delivery and monitoring using DevOps tools such as Git, Docker, Jenkins, Puppet and Nagios in a practical, hands-on and interactive approach. The DevOps training course focuses heavily on the use of Docker containers, a technology that is revolutionizing the way apps are deployed in the cloud today and is a critical skillset to master in the cloud age.
After completing the DevOps training course you will achieve hands-on expertise in various aspects of the DevOps delivery model. The practical learning outcomes of this Devops training course are:
An understanding of DevOps and the modern DevOps toolsets
The ability to automate all aspects of a modern code delivery and deployment pipeline using:
1. Source code management tools
2. Build tools
3. Test automation tools
4. Containerization through Docker
5. Configuration management tools
6. Monitoring tools
DevOps jobs are the third-highest tech role ranked by employer demand on Indeed.com but have the second-highest talent deficit.
Learn more at https://www.simplilearn.com/cloud-computing/devops-practitioner-certification-training
Docker is an open platform for developing, shipping, and running applications. It allows packaging applications into standardized units for software called containers that can run on any infrastructure. The key components of Docker include images, containers, a client-server architecture using Docker Engine, and registries for storing images. Images act as templates for creating containers, which are run-time instances of images. Docker provides portability and isolation of applications using containers.
This document provides an overview of Docker and the author's experience. It discusses key Docker concepts like images, containers, the Dockerfile and Docker Engine. It also summarizes Docker benefits like portability, scalability and efficiency. Components like Docker Hub, Docker Machine and orchestration tools are briefly introduced. Security considerations and using Docker in production are also mentioned.
Docker allows building, shipping, and running applications in portable containers. It packages an application with all its dependencies into a standardized unit for software development. Major cloud providers and companies support and use Docker in production. Containers are more lightweight and efficient than virtual machines, providing faster launch times and allowing thousands to run simultaneously on the same server. Docker simplifies distributing applications and ensures a consistent environment.
Docker is a system for running applications in isolated containers. It addresses issues with traditional virtual machines by providing lightweight containers that share resources and allow applications to run consistently across different environments. Docker eliminates inconsistencies in development, testing and production environments. It allows applications and their dependencies to be packaged into a standardized unit called a container that can run on any Linux server. This makes applications highly portable and improves efficiency across the entire development lifecycle.
Docker Explained | What Is A Docker Container? | Docker Simplified | Docker T...Edureka!
( ** DevOps Training: https://www.edureka.co/devops ** )
This Docker Explained PPT will explain to you the fundamentals of Docker with a hands-on. Below are the topics covered in the PPT:
Problems Before Docker
Virtualization vs Containerization
What is Docker?
How does Docker work?
Docker Components
Docker Architecture
Docker Compose & Docker Swarm
Hands-On
What is Docker | Docker Tutorial for Beginners | Docker Container | DevOps To...Edureka!
This DevOps Docker Tutorial on what is docker ( Docker Tutorial Blog Series: https://goo.gl/32kupf ) will help you understand how to use Docker Hub, Docker Images, Docker Container & Docker Compose. This tutorial explains Docker's working Architecture and Docker Engine in detail. This Docker tutorial also includes a Hands-On session around Docker by the end of which you will learn to pull a centos Docker Image and spin your own Docker Container. You will also see how to launch multiple docker containers using Docker Compose. Finally, it will also tell you the role Docker plays in the DevOps life-cycle.
The Hands-On session is performed on an Ubuntu-64bit machine in which Docker is installed.
1. Docker allows creating lightweight virtual environments called containers that package code and dependencies together. Containers are more portable than virtual machines.
2. Docker uses images to build containers. Images are immutable templates and containers are instances of images that can be run. The Dockerfile defines how to build images.
3. Common Docker commands include docker pull to download images, docker run to create and start containers, docker exec to run commands in running containers, and docker commit to save container changes as new images.
Docker allows users to package applications with all their dependencies into standardized units called containers that can run on any Linux server. Containers are more lightweight than virtual machines because they share the host operating system and only require the additional libraries and binaries needed to run the application rather than a full guest operating system. Docker uses containers and an image format to deploy applications in a consistent manner across development, testing, and production. The document provides examples of how to define a Dockerfile to build an image, run containers from images using docker-compose, and common Docker commands.
Docker is a technology that uses lightweight containers to package applications and their dependencies in a standardized way. This allows applications to be easily deployed across different environments without changes to the installation procedure. Docker simplifies DevOps tasks by enabling a "build once, ship anywhere" model through standardized environments and images. Key benefits include faster deployments, increased utilization of resources, and easier integration with continuous delivery and cloud platforms.
- The document introduces Docker, explaining that it provides standardized packaging for software and dependencies to isolate applications and share the same operating system kernel.
- Key aspects of Docker are discussed, including images which are layered and can be version controlled, containers which start much faster than virtual machines, and Dockerfiles which provide build instructions for images.
- The document demonstrates Docker's build, ship, and run workflow through examples of building a simple image and running a container, as well as using Docker Compose to run multi-container applications like WordPress. It also introduces Docker Swarm for clustering multiple Docker hosts.
Introduction to Docker presented by MANAOUIL Karim at the Shellmates's Hack.INI event. The teams deployed were assisted to deploy a Python Flask application behind an Nginx load balancer.
Docker is a tool that allows users to package applications into containers to run on Linux servers. Containers provide isolation and resource sharing benefits compared to virtual machines. Docker simplifies deployment of containers by adding images, repositories and version control. Popular components include Dockerfiles to build images, Docker Hub for sharing images, and Docker Compose for defining multi-container apps. Docker has gained widespread adoption due to reducing complexity of managing containers across development and operations teams.
The document introduces Docker, a container platform. It discusses how Docker addresses issues with deploying different PHP projects that have varying version requirements by allowing each project to run isolated in its own container with specified dependencies. It then covers key Docker concepts like images, containers, linking, exposing ports, volumes, and Dockerfiles. The document highlights advantages of Docker like enabling applications to run anywhere without compatibility issues and making deployment more efficient.
Docker Tutorial For Beginners | What Is Docker And How It Works? | Docker Tut...Simplilearn
This presentation about Docker tutorial will help you understand what is Docker, advantages of Docker, how does Docker work, components of Docker, virtual machine vs Docker, advanced concepts in Docker, basic Docker commands along with a demo. A Docker is an OS-level virtualization software that enables developers and IT administrators to create, deploy and run applications in a Docker container with all their dependencies. It is said to be a very light-weight software container and containerization platform. Docker engine or Docker is a client-server application that builds and executes using Docker components. Rapid deployment, portability, better efficiency, faster configuration, scalability, security are some of the advantages you get by using Docker.
Below topics are explained in this Docker presentation:
1. Virtual machine vs Docker
2. What is Docker?
3. Advantages of Docker
4. How does Docker work?
5. Components of Docker
6. Advanced concepts in Docker
7. Basic Docker commands
Why learn DevOps?
Simplilearn’s DevOps training course is designed to help you become a DevOps practitioner and apply the latest in DevOps methodology to automate your software development lifecycle right out of the class. You will master configuration management; continuous integration deployment, delivery and monitoring using DevOps tools such as Git, Docker, Jenkins, Puppet and Nagios in a practical, hands-on and interactive approach. The DevOps training course focuses heavily on the use of Docker containers, a technology that is revolutionizing the way apps are deployed in the cloud today and is a critical skillset to master in the cloud age.
After completing the DevOps training course you will achieve hands-on expertise in various aspects of the DevOps delivery model. The practical learning outcomes of this Devops training course are:
An understanding of DevOps and the modern DevOps toolsets
The ability to automate all aspects of a modern code delivery and deployment pipeline using:
1. Source code management tools
2. Build tools
3. Test automation tools
4. Containerization through Docker
5. Configuration management tools
6. Monitoring tools
Who should take this course?
DevOps career opportunities are thriving worldwide. DevOps was featured as one of the 11 best jobs in America for 2017, according to CBS News, and data from Payscale.com shows that DevOps Managers earn as much as $122,234 per year, with DevOps engineers making as much as $151,461. DevOps jobs are the third-highest tech role ranked by employer demand on Indeed.com but have the second-highest talent deficit.
This DevOps training course will be of benefit the following professional roles:
1. Software Developers
2. Technical Project Managers
3. Architects
4. Operations Support
5. Deployment engineers
6. IT managers
7. Development managers
You can learn more at https://www.simplilearn.com/cloud-computing/devops-practitioner-certification-training
Docker is an open platform for developing, shipping, and running distributed applications. It allows applications to be shipped and run in lightweight containers that can run on any Linux server. Docker uses operating-system-level virtualization and cgroups isolation to deliver lightweight containers quickly. Key features of Docker include portability, lightweight containers that share resources and isolate processes, and automated workflows.
This document provides an introduction to Docker. It begins by introducing the presenter and agenda. It then explains that containers are not virtual machines and discusses the differences in architecture and benefits. It covers the basic Docker workflow of building, shipping, and running containers. It discusses Docker concepts like images, containers, and registries. It demonstrates basic Docker commands. It shows how to define a Dockerfile and build an image. It discusses data persistence using volumes. It covers using Docker Compose to define and run multi-container applications and Docker Swarm for clustering. It provides recommendations for getting started with Docker at different levels.
The document provides information on how to write a Dockerfile, including:
- What a Dockerfile is and its purpose of providing instructions to build a Docker image
- Common Dockerfile instructions like FROM, RUN, COPY, EXPOSE, and CMD
- Best practices for writing Dockerfiles such as making images smaller, choosing the correct build context, leveraging the build cache, and ordering instructions
- Additional topics covered include the Docker build context, Dockerfile format, and tools like Docker BuildKit and Docker Scan. The presentation concludes with a demonstration of Dockerfiles.
Immutable infrastructure with Docker and EC2dotCloud
This document discusses Gilt's strategy of using immutable infrastructure with Docker and EC2 to enable continuous delivery and minimize risk when deploying new software versions. Some key points made include:
- Gilt builds Docker containers for each new application version, creates a new "stack" of infrastructure to run the container, and uses incremental rollout and automated rollback to reduce risk.
- Immutable infrastructure emerges naturally with Docker since each version requires new containers and infrastructure rather than updating existing instances.
- Automating deployment, rollback, and incremental rollout across new infrastructure stacks reduces probability, cost and occurrences of failures when deploying new versions.
- Instant rollback is possible by moving traffic back to the previous version's infrastructure if
This document summarizes the key events and announcements from Day 1 of DockerCon. It highlights the large number of attendees, keynotes from Red Hat executives, and the official launch of Docker Engine 1.0 and Docker Hub 1.0. It also thanks the many contributors, users, partners and open source projects that have helped Docker grow rapidly in the last 15 months since its launch.
Docker has created enormous buzz in the last few years. Docker is a open-source software containerization platform. It provides an ability to package software into standardised units on Docker for software development. In this hands-on introductory session, I introduce the concept of containers, provide an overview of Docker, and take the participants through the steps for installing Docker. The main session involves using Docker CLI (Command Line Interface) - all the concepts such as images, managing containers, and getting useful work done is illustrated step-by-step by running commands.
Configuration management tools like Chef, Puppet, and Ansible aim to reduce inconsistencies by imposing and managing consistent configurations across environments. However, they do not fully address issues related to dependencies, isolation, and portability. Docker containers build on these tools by adding standard interfaces and a lightweight virtualization layer that encapsulates code and dependencies, allowing applications and their environments to be packaged together and run consistently on any infrastructure while also providing isolation.
A Gentle Introduction To Docker And All Things ContainersJérôme Petazzoni
Docker is a runtime for Linux Containers. It enables "separation of concern" between devs and ops, and solves the "matrix from hell" of software deployment. This presentation explains it all! It also explains the role of the storage backend and compares the various backends available. It gives multiple recipes to build Docker images, including integration with configuration management software like Chef, Puppet, Salt, Ansible. If you already watched other Docker presentations, this is an actualized version (as of mid-November 2013) of the thing!
Integrating Docker EE into Société Générale's Existing Enterprise IT SystemsDocker, Inc.
Société Générale knows that containers and the cloud are the future of the IT industry and have been using Docker EE for over a year and a half. In this talk, we will share how Docker EE fits into our global strategy and our architecture for integrating the platform to our existing IT systems. We will go over tradeoffs of how we operationalized the platform to provide a highly available CAAS to our global enterprise. Finally, we will share how we are onboarding development teams and deploying their applications to production.
Write Once and REALLY Run Anywhere | OpenStack Summit HK 2013dotCloud
The document outlines the agenda for the OpenStack Summit in November 2013. The agenda includes sessions on Docker and its ecosystem, using Docker with OpenStack and Rackspace, and a cross-cloud deployment demo. Docker is presented as a solution for developing and deploying applications across multiple environments by encapsulating code and dependencies in portable containers. It can help eliminate inconsistencies between development, testing, and production environments.
Docker is a system for running applications in lightweight containers that can be deployed across machines. It allows developers to package applications with all dependencies into standardized units for software development. Docker eliminates inconsistencies in environments and allows applications to be easily deployed on virtual machines, physical servers, public clouds, private clouds, and developer laptops through the use of containers.
The challenge of application distribution - Introduction to Docker (2014 dec ...Sébastien Portebois
Live recording with the demos: https://www.youtube.com/watch?v=0XRcmJEiZOM
Contents
- The application distribution challenge
- The current solutions
- Introduction to Docker, Containers, and the Matrix from Hell
- Why people care: Separation of Concerns
- Technical Discussion
- Ecosystem, momentum
- How to build Docker images
- How to make containers talk to each other, how to handle data persistence
- Demo 1: isolation
- Demo 2: real case - installing Go Math! Academy, tail –f containers, unit tests
This document provides an introduction to Docker, including why it was created, how it works, and its growing ecosystem. Docker allows applications to be packaged with all their dependencies and run consistently across any Linux server by using lightweight virtual containers rather than full virtual machines. It solves the problem of differences between development, testing, and production environments. The document outlines the technical details and advantages of Docker, examples of how companies are using it, and the growing support in tools and platforms.
The document provides an introduction to Docker, containers, and the problems they aim to solve. It discusses:
- Why Docker was created - to address the "matrix from hell" of developing and deploying applications across different environments and platforms.
- How Docker works at a high level, using lightweight containers that package code and dependencies to run consistently on any infrastructure.
- Some key Docker concepts like images, containers, the Dockerfile for building images, and common Docker commands.
- Benefits of Docker for developers and operations in simplifying deployment, reducing inconsistencies, and improving portability of applications.
The document outlines the agenda for the OpenStack Summit in November 2013, including presentations on Docker and its ecosystem, how Docker can be used with OpenStack and Rackspace, and a demonstration of cross-cloud application deployment using Docker. Docker is presented as a solution to the "matrix from hell" of running applications across different environments by providing lightweight, portable containers that can run anywhere regardless of the operating system. The summit aims to educate attendees on Docker and showcase its integration with OpenStack for simplified and efficient application deployment and management across multiple clouds.
This document provides an introduction and overview of Docker. It discusses why Docker was created to address issues with managing applications across different environments, and how Docker uses lightweight containers to package and run applications. It also summarizes the growth and adoption of Docker in its first 7 months, and outlines some of its core features and the Docker ecosystem including integration with DevOps tools and public clouds.
This document discusses using Docker containers with OpenStack for application deployment. It begins with an introduction to Docker, describing its growth in usage and integration with various tools. Docker is presented as a solution to issues around deploying applications across different environments and hardware by providing lightweight, portable containers that package code and dependencies. The document demonstrates how Docker can be used with OpenStack through a new hypervisor that allows OpenStack to deploy and manage Linux containers, enabling control of Docker through the OpenStack dashboard.
This document discusses using Docker containers with OpenStack for application deployment. It begins with an introduction to Docker, describing its growth in usage and integration with various tools. Docker is presented as a solution to issues around deploying applications across different environments and hardware by providing lightweight, portable containers that package code and dependencies. The document demonstrates how Docker can be used with OpenStack through a new hypervisor that allows OpenStack to deploy and manage Linux containers, enabling control of Docker through the OpenStack dashboard. It outlines some benefits of Docker combined with OpenStack and the current state of the related OpenStack project.
OpenStack, Containers, and Docker: The Future of Application Deployment
Twenty years ago, developers built static applications on well-defined stacks that ran on proprietary, monolithic hardware. Developers today want freedom to build applications using their choice of services and stacks and, ideally, want to be able to run those applications on any available hardware. Of course, this raises questions about service interaction, the practicality of migrating applications across environments, and the challenges of managing unlimited combinations of services and hardware environment.
By promoting an opensource approach to flexible and inter-operable infrastructure, OpenStack goes a long way towards achieving this vision of the future. This talk discusses the application and platform side of the equation, and the interplay between OpenStack, Container technology (e.g. LXC), and the opensource Docker.io project. Docker.io enables any application and its dependencies to be deployed as lightweight containers that run consistently virtually anywhere. The same containerized application that runs on a developer's laptop can run consistently on a bare metal server, an OpenStack cluster, a Rackspace cloud, a VM,etc. While providing isolation and compatibility, containers have significant size, performance, and deployment advantages over traditional VMs.
Recently, the community created an integration between Docker and OpenStack Nova, opening up exciting possibilities for web scale application deployment, continuous integration and deployment, private PaaS, and hybrid cloud. This session will give an introduction to Docker and containers in the context of OpenStack, and will then demonstrate cross-environment deployment of applications.
Docker is an open-source project that allows developers to package applications into lightweight, portable containers that can run on any Linux server. Containers isolate applications from one another and the underlying infrastructure, while still sharing operating system resources to improve efficiency. Docker eliminates inconsistencies between development and production environments by allowing applications to run identically in any computing environment, from a developer's laptop to the cloud. This portability and consistency accelerates the development lifecycle and improves deployment workflows for both developers and operations teams.
Introduction to dockers and kubernetes. Learn how this helps you to build scalable and portable applications with cloud. It introduces the basic concepts of dockers, its differences with virtualization, then explain the need for orchestration and do some hands-on experiments with dockers
This document summarizes Docker, an open-source containerization platform. It discusses Docker's rapid growth since its launch 1 year prior, with over 370 contributors and 1 million downloads. Docker addresses the challenge of running applications across different environments by allowing applications and their dependencies to run in isolated containers that can be moved between servers. This eliminates inconsistencies between development and production environments. The document outlines benefits of Docker for developers, operations teams, and its role in microservices architecture.
This document discusses containers and Docker. It begins by explaining that cloud infrastructures comprise virtual resources like compute and storage nodes that are administered through software. Docker is introduced as a standard way to package code and dependencies into portable containers that can run anywhere. Key benefits of Docker include increased efficiency, consistency, and security compared to traditional virtual machines. Some weaknesses are that Docker may not be suitable for all applications and large container management can be difficult. Interesting uses of Docker include malware analysis sandboxes, isolating Skype sessions, and managing Raspberry Pi clusters with Docker Swarm.
The document discusses using Docker containers with OpenStack to deploy applications. It begins with an introduction to Docker and its benefits. It then covers adding Docker support to the OpenStack Nova computing controller to deploy containers instead of virtual machines. The remainder demonstrates setting up DevStack to use Docker with OpenStack and shows examples of launching Docker containers through the OpenStack Horizon web interface.
Newt Global provides DevOps transformation, cloud enablement, and test automation services. It was founded in 2004 and is headquartered in Dallas, Texas with locations in the US and India. The company is a leader in DevOps transformations and has been one of the top 100 fastest growing companies in Dallas twice. The document discusses an upcoming webinar on Docker 101 that will be presented by two Newt Global employees: Venkatnadhan Thirunalai, the DevOps Practice Leader, and Jayakarthi Dhanabalan, an AWS Solution Specialist.
My college ppt on topic Docker. Through this ppt, you will understand the following:- What is a container? What is Docker? Why its important for developers? and many more!
The slides talk about Docker and container terminologies but will also be able to see the big picture of where & how it fits into your current project/domain.
Topics that are covered:
1. What is Docker Technology?
2. Why Docker/Containers are important for your company?
3. What are its various features and use cases?
4. How to get started with Docker containers.
5. Case studies from various domains
Docker-Hanoi @DKT , Presentation about Docker EcosystemVan Phuc
The document provides an overview of Docker Platform and Ecosystem. It begins with introductions and background on Docker, explaining how Docker solves the problem of dependency hell and portability issues by allowing applications to run in isolated containers that package code and dependencies. It then discusses key components of Docker including Engine, Registry, Machine, Swarm, Compose and tools like Toolbox and Cloud. The document concludes with examples of using Docker for continuous integration pipelines and microservices architectures.
AI in the Workplace Reskilling, Upskilling, and Future Work.pptxSunil Jagani
Discover how AI is transforming the workplace and learn strategies for reskilling and upskilling employees to stay ahead. This comprehensive guide covers the impact of AI on jobs, essential skills for the future, and successful case studies from industry leaders. Embrace AI-driven changes, foster continuous learning, and build a future-ready workforce.
Read More - https://bit.ly/3VKly70
AppSec PNW: Android and iOS Application Security with MobSFAjin Abraham
Mobile Security Framework - MobSF is a free and open source automated mobile application security testing environment designed to help security engineers, researchers, developers, and penetration testers to identify security vulnerabilities, malicious behaviours and privacy concerns in mobile applications using static and dynamic analysis. It supports all the popular mobile application binaries and source code formats built for Android and iOS devices. In addition to automated security assessment, it also offers an interactive testing environment to build and execute scenario based test/fuzz cases against the application.
This talk covers:
Using MobSF for static analysis of mobile applications.
Interactive dynamic security assessment of Android and iOS applications.
Solving Mobile app CTF challenges.
Reverse engineering and runtime analysis of Mobile malware.
How to shift left and integrate MobSF/mobsfscan SAST and DAST in your build pipeline.
Northern Engraving | Modern Metal Trim, Nameplates and Appliance PanelsNorthern Engraving
What began over 115 years ago as a supplier of precision gauges to the automotive industry has evolved into being an industry leader in the manufacture of product branding, automotive cockpit trim and decorative appliance trim. Value-added services include in-house Design, Engineering, Program Management, Test Lab and Tool Shops.
The Department of Veteran Affairs (VA) invited Taylor Paschal, Knowledge & Information Management Consultant at Enterprise Knowledge, to speak at a Knowledge Management Lunch and Learn hosted on June 12, 2024. All Office of Administration staff were invited to attend and received professional development credit for participating in the voluntary event.
The objectives of the Lunch and Learn presentation were to:
- Review what KM ‘is’ and ‘isn’t’
- Understand the value of KM and the benefits of engaging
- Define and reflect on your “what’s in it for me?”
- Share actionable ways you can participate in Knowledge - - Capture & Transfer
"NATO Hackathon Winner: AI-Powered Drug Search", Taras KlobaFwdays
This is a session that details how PostgreSQL's features and Azure AI Services can be effectively used to significantly enhance the search functionality in any application.
In this session, we'll share insights on how we used PostgreSQL to facilitate precise searches across multiple fields in our mobile application. The techniques include using LIKE and ILIKE operators and integrating a trigram-based search to handle potential misspellings, thereby increasing the search accuracy.
We'll also discuss how the azure_ai extension on PostgreSQL databases in Azure and Azure AI Services were utilized to create vectors from user input, a feature beneficial when users wish to find specific items based on text prompts. While our application's case study involves a drug search, the techniques and principles shared in this session can be adapted to improve search functionality in a wide range of applications. Join us to learn how PostgreSQL and Azure AI can be harnessed to enhance your application's search capability.
In the realm of cybersecurity, offensive security practices act as a critical shield. By simulating real-world attacks in a controlled environment, these techniques expose vulnerabilities before malicious actors can exploit them. This proactive approach allows manufacturers to identify and fix weaknesses, significantly enhancing system security.
This presentation delves into the development of a system designed to mimic Galileo's Open Service signal using software-defined radio (SDR) technology. We'll begin with a foundational overview of both Global Navigation Satellite Systems (GNSS) and the intricacies of digital signal processing.
The presentation culminates in a live demonstration. We'll showcase the manipulation of Galileo's Open Service pilot signal, simulating an attack on various software and hardware systems. This practical demonstration serves to highlight the potential consequences of unaddressed vulnerabilities, emphasizing the importance of offensive security practices in safeguarding critical infrastructure.
LF Energy Webinar: Carbon Data Specifications: Mechanisms to Improve Data Acc...DanBrown980551
This LF Energy webinar took place June 20, 2024. It featured:
-Alex Thornton, LF Energy
-Hallie Cramer, Google
-Daniel Roesler, UtilityAPI
-Henry Richardson, WattTime
In response to the urgency and scale required to effectively address climate change, open source solutions offer significant potential for driving innovation and progress. Currently, there is a growing demand for standardization and interoperability in energy data and modeling. Open source standards and specifications within the energy sector can also alleviate challenges associated with data fragmentation, transparency, and accessibility. At the same time, it is crucial to consider privacy and security concerns throughout the development of open source platforms.
This webinar will delve into the motivations behind establishing LF Energy’s Carbon Data Specification Consortium. It will provide an overview of the draft specifications and the ongoing progress made by the respective working groups.
Three primary specifications will be discussed:
-Discovery and client registration, emphasizing transparent processes and secure and private access
-Customer data, centering around customer tariffs, bills, energy usage, and full consumption disclosure
-Power systems data, focusing on grid data, inclusive of transmission and distribution networks, generation, intergrid power flows, and market settlement data
"Choosing proper type of scaling", Olena SyrotaFwdays
Imagine an IoT processing system that is already quite mature and production-ready and for which client coverage is growing and scaling and performance aspects are life and death questions. The system has Redis, MongoDB, and stream processing based on ksqldb. In this talk, firstly, we will analyze scaling approaches and then select the proper ones for our system.
What is an RPA CoE? Session 2 – CoE RolesDianaGray10
In this session, we will review the players involved in the CoE and how each role impacts opportunities.
Topics covered:
• What roles are essential?
• What place in the automation journey does each role play?
Speaker:
Chris Bolin, Senior Intelligent Automation Architect Anika Systems
Northern Engraving | Nameplate Manufacturing Process - 2024Northern Engraving
Manufacturing custom quality metal nameplates and badges involves several standard operations. Processes include sheet prep, lithography, screening, coating, punch press and inspection. All decoration is completed in the flat sheet with adhesive and tooling operations following. The possibilities for creating unique durable nameplates are endless. How will you create your brand identity? We can help!
From Natural Language to Structured Solr Queries using LLMsSease
This talk draws on experimentation to enable AI applications with Solr. One important use case is to use AI for better accessibility and discoverability of the data: while User eXperience techniques, lexical search improvements, and data harmonization can take organizations to a good level of accessibility, a structural (or “cognitive” gap) remains between the data user needs and the data producer constraints.
That is where AI – and most importantly, Natural Language Processing and Large Language Model techniques – could make a difference. This natural language, conversational engine could facilitate access and usage of the data leveraging the semantics of any data source.
The objective of the presentation is to propose a technical approach and a way forward to achieve this goal.
The key concept is to enable users to express their search queries in natural language, which the LLM then enriches, interprets, and translates into structured queries based on the Solr index’s metadata.
This approach leverages the LLM’s ability to understand the nuances of natural language and the structure of documents within Apache Solr.
The LLM acts as an intermediary agent, offering a transparent experience to users automatically and potentially uncovering relevant documents that conventional search methods might overlook. The presentation will include the results of this experimental work, lessons learned, best practices, and the scope of future work that should improve the approach and make it production-ready.
Introducing BoxLang : A new JVM language for productivity and modularity!Ortus Solutions, Corp
Just like life, our code must adapt to the ever changing world we live in. From one day coding for the web, to the next for our tablets or APIs or for running serverless applications. Multi-runtime development is the future of coding, the future is to be dynamic. Let us introduce you to BoxLang.
Dynamic. Modular. Productive.
BoxLang redefines development with its dynamic nature, empowering developers to craft expressive and functional code effortlessly. Its modular architecture prioritizes flexibility, allowing for seamless integration into existing ecosystems.
Interoperability at its Core
With 100% interoperability with Java, BoxLang seamlessly bridges the gap between traditional and modern development paradigms, unlocking new possibilities for innovation and collaboration.
Multi-Runtime
From the tiny 2m operating system binary to running on our pure Java web server, CommandBox, Jakarta EE, AWS Lambda, Microsoft Functions, Web Assembly, Android and more. BoxLang has been designed to enhance and adapt according to it's runnable runtime.
The Fusion of Modernity and Tradition
Experience the fusion of modern features inspired by CFML, Node, Ruby, Kotlin, Java, and Clojure, combined with the familiarity of Java bytecode compilation, making BoxLang a language of choice for forward-thinking developers.
Empowering Transition with Transpiler Support
Transitioning from CFML to BoxLang is seamless with our JIT transpiler, facilitating smooth migration and preserving existing code investments.
Unlocking Creativity with IDE Tools
Unleash your creativity with powerful IDE tools tailored for BoxLang, providing an intuitive development experience and streamlining your workflow. Join us as we embark on a journey to redefine JVM development. Welcome to the era of BoxLang.
The Microsoft 365 Migration Tutorial For Beginner.pptxoperationspcvita
This presentation will help you understand the power of Microsoft 365. However, we have mentioned every productivity app included in Office 365. Additionally, we have suggested the migration situation related to Office 365 and how we can help you.
You can also read: https://www.systoolsgroup.com/updates/office-365-tenant-to-tenant-migration-step-by-step-complete-guide/
How information systems are built or acquired puts information, which is what they should be about, in a secondary place. Our language adapted accordingly, and we no longer talk about information systems but applications. Applications evolved in a way to break data into diverse fragments, tightly coupled with applications and expensive to integrate. The result is technical debt, which is re-paid by taking even bigger "loans", resulting in an ever-increasing technical debt. Software engineering and procurement practices work in sync with market forces to maintain this trend. This talk demonstrates how natural this situation is. The question is: can something be done to reverse the trend?
2. Contents
• Introduction to Containers
• What is Docker?
• Docker Architecture
• Installing Docker
• Docker Engine
• Docker Images
• Docker File
• Docker Hub
• Docker CLI
• Kubernetes
• Hands On Demo
3. Containers
• LXC (Linux Containers) is an operating-system-level
virtualization method for running multiple isolated Linux
systems (containers) on a control host using a single Linux
kernel.
• The Linux kernel provides the cgroups functionality that
allows limitation and prioritization of resources (CPU,
memory, block I/O, network, etc.) without the need for
starting any virtual machines, and namespace isolation
functionality that allows complete isolation of an
applications' view of the operating environment, including
process trees, networking, user IDs and mounted file
systems
5. What is Docker
• Docker is an open-source project that automates the
deployment of applications inside software container
• Docker containers wrap up a piece of software in a
complete file system that contains everything it needs to
run: code, runtime, system tools, system libraries –
anything you can install on a server.
• This guarantees that it will always run the same,
regardless of the environment it is running in.
6. Static website
Web frontend
User DB
Queue Analytics DB
Background workers
API endpoint
nginx 1.5 + modsecurity + openssl + bootstrap 2
postgresql + pgv8 + v8
hadoop + hive + thrift + OpenJDK
Ruby + Rails + sass + Unicorn
Redis + redis-sentinel
Python 3.0 + celery + pyredis + libcurl + ffmpeg + libopencv + nodejs +
phantomjs
Python 2.7 + Flask + pyredis + celery + psycopg + postgresql-client
Development VM
QA server
Public Cloud
Disaster recovery
Contributor’s laptop
Production Servers
The Challenge
Multiplicityof
Stacks
Multiplicityof
hardware
environments
Production Cluster
Customer Data Center
Doservicesand
appsinteract
appropriately?
CanImigrate
smoothlyand
quickly?
7. The Matrix From Hell
Static website
Web frontend
Background workers
User DB
Analytics DB
Queue
Development
VM
QA Server
Single Prod
Server
Onsite
Cluster
Public Cloud
Contributor’s
laptop
Customer
Servers
? ? ? ? ? ? ?
? ? ? ? ? ? ?
? ? ? ? ? ? ?
? ? ? ? ? ? ?
? ? ? ? ? ? ?
? ? ? ? ? ? ?
11. Static website Web frontendUser DB Queue Analytics DB
Development
VM
QA server Public Cloud Contributor’s
laptop
Docker is a shipping container system for
code
Multiplicityof
Stacks
Multiplicityof
hardware
environments
Production
Cluster
Customer Data
Center
Doservicesand
appsinteract
appropriately?
CanImigrate
smoothlyand
quickly
…that can be manipulated using
standard operations and run
consistently on virtually any
hardware platform
An engine that enables any
payload to be encapsulated as
a lightweight, portable, self-
sufficient container…
12. Static website
Web frontend
Background workers
User DB
Analytics DB
Queue
Development
VM
QA Server
Single Prod
Server
Onsite
Cluster
Public Cloud
Contributor’s
laptop
Customer
Servers
Docker eliminates the matrix from Hell
13. Why Developers Care
• Build once, run anywhere
• A clean, safe, hygienic and portable runtime
environment for your app.
• No worries about missing dependencies, packages and
other pain points during subsequent deployments.
• Run each app in its own isolated container, so you can
run various versions of libraries and other
dependencies for each app without worrying
14. Why Developers Care
• Automate testing, integration, packaging…anything
you can script
• Reduce/eliminate concerns about compatibility on
different platforms, either your own or your customers.
• Cheap, zero-penalty containers to deploy services? A
VM without the overhead of a VM? Instant replay and
reset of image snapshots? That’s the power of Docker
15. Why Devops Cares?
• Configure once…run anything
• Make the entire lifecycle more efficient, consistent, and
repeatable
• Increase the quality of code produced by developers.
• Eliminate inconsistencies between development, test,
production, and customer environments
16. Why Devops Cares?
• Support segregation of duties
• Significantly improves the speed and reliability of
continuous deployment and continuous integration
systems
• Because the containers are so lightweight, address
significant performance, costs, deployment, and
portability issues normally associated with VMs
17. Why it works—separation of concerns
• The Developer
• Worries about
what’s “inside” the
container
• His code
• His Libraries
• His Package
Manager
• His Apps
• His Data
• All Linux servers
look the same
• The Administrator
• Worries about
what’s “outside”
the container
• Logging
• Remote access
• Monitoring
• Network config
• All containers
start, stop, copy,
attach, migrate,
etc. the same way
18. More technical explanation
• High Level—It’s a lightweight
VM
• Own process space
• Own network interface
• Can run stuff as root
• Can have its own /sbin/init
(different from host)
• Low Level—It’s chroot on steroids
• Can also not have its own /sbin/init
• Container=isolated processes
• Share kernel with host
• No device emulation (neither HVM
nor PV) from host)
• Run everywhere
• Regardless of kernel
version (2.6.32+)
• Regardless of host distro
• Physical or virtual, cloud
or not
• Container and host
architecture must
match*
• Run anything
• If it can run on the host,
it can run in the
container
• i.e. if it can run on a Linux
kernel, it can run
WHY WHAT
19. App
A
Containers vs. VMs
Hypervisor (Type 2)
Host OS
Server
Guest
OS
Bins/
Libs
App
A’
Guest
OS
Bins/
Libs
App
B
Guest
OS
Bins/
Libs
AppA’
Docker
Host OS
Server
Bins/Libs
AppA
Bins/Libs
AppB
AppB’
AppB’
AppB’
VM
Container
Containers are isolated,
but share OS and, where
appropriate,
bins/libraries
Guest
OS
Guest
OS
…result is significantly faster
deployment, much less overhead,
easier migration, faster restart
20. Why are Docker containers lightweight?
Bins/
Libs
App
A
Original App
(No OS to take
up space, resources,
or require restart)
AppΔ
Bins
/
App
A
Bins/
Libs
App
A’
Guest
OS
Bins/
Libs
Modified App
Copy on write
capabilities allow
us to only save the
diffs
Between container
A and container
A’
VMs
Every app, every copy of an
app, and every slight modification
of the app requires a new virtual server
App
A
Guest
OS
Bins/
Libs
Copy of
App
No OS. Can
Share bins/libs
App
A
Guest
OS
Guest
OS
VMs Containers
21. What are the basics of the Docker system?
Source
Code
Repository
Dockerfile
For
A
Docker Engine
Docker
Container
Image
Registry
Build
Docker
Host 2 OS (Linux)
ContainerA
ContainerB
ContainerC
ContainerA
Push
Search Pull
Run
Host 1 OS (Linux)
22. Changes and Updates
Docker Engine
Docker
Container
Image
Registry
Docker Engine
Push
Update
Bins/
Libs
App
A
AppΔ
Bins
/
Base
Container
Image
Host is now running A’’
Container
Mod A’’
AppΔ
Bins
/
Bins/
Libs
App
A
Bins
/
Bins/
Libs
App
A’’
Host running A wants to upgrade to A’’.
Requests update. Gets only diffs
Container
Mod A’
23. Ecosystem Support
• Operating systems
• Virtually any distribution with a 2.6.32+ kernel
• Red Hat/Docker collaboration to make work across
RHEL 6.4+, Fedora, and other members of the
family (2.6.32 +)
• CoreOS—Small core OS purpose built with Docker
• OpenStack
• Docker integration into NOVA (& compatibility with
Glance, Horizon, etc.) accepted for Havana release
• Private PaaS
• OpenShift
• Solum (Rackspace, OpenStack)
• Other TBA
• Public PaaS
• Deis, Voxoz, Cocaine (Yandex), Baidu PaaS
24. Ecosystem Support
• Public IaaS
• Native support in Rackspace, Digital Ocean,+++
• AMI (or equivalent) available for AWS & other
• DevOps Tools
• Integrations with Chef, Puppet, Jenkins, Travis,
Salt, Ansible +++
• Orchestration tools
• Mesos, Heat, ++
• Shipyard & others purpose built for Docker
• Applications
• 1000’s of Dockerized applications available at
index.docker.io
25. Use Cases
Use Case Examples
Clusters
Building a MongoDB cluster using docker
Production Quality MongoDB Setup with Docker
Wildfly cluster using Docker on Fedora
Build your own PaaS OpenSource PaaS built on Docker, Chef, and Heroku
Buildpacks
Web Based Environment for Instruction JiffyLab – web based environment for the instruction, or
lightweight use of, Python and UNIX shell
Easy Application Deployment
Deploy Java Apps With Docker = Awesome
How to put your development environment on docker
Running Drupal on Docker
Installing Wordpress on Docker
26. Use Cases
Use Case Examples
Create Secure Sandboxes Docker makes creating secure sandboxes easier than ever
Create your own SaaS Memcached as a Service
Automated Application Deployment Multi-cloud Deployment with Docker
Continuous Integration and Deployment
Next Generation Continuous Integration & Deployment
with dotCloud’s Docker and Strider
Testing Salt States Rapidly With Docker
Lightweight Desktop Virtualization
Docker Desktop: Your Desktop Over SSH Running Inside
Of A Docker Container
28. Namespaces
• Docker takes advantage of a technology called namespaces to
provide the isolated workspace we call the container.
• When you run a container, Docker creates a set of namespaces for
that container.
• Some of the namespaces that Docker Engine uses on Linux are:
1. The pid namespace: Process isolation (PID: Process ID).
2. The net namespace: Managing network interfaces (NET:
Networking).
3. The ipc namespace: Managing access to IPC resources (IPC:
InterProcess Communication).
4. The mnt namespace: Managing mount-points (MNT: Mount).
5. The uts namespace: Isolating kernel and version identifiers. (UTS:
Unix Timesharing System)
29. Control groups
• Docker Engine on Linux also makes use of another
technology called cgroups or control groups.
• A key to running applications in isolation is to have them
only use the resources you want.
• This ensures containers are good multi-tenant citizens on
a host.
• Control groups allow Docker Engine to share available
hardware resources to containers and, if required, set up
limits and constraints.
• For example, limiting the memory available to a specific
container.
31. Docker Engine
Docker Engine is a client-server application with these
major components:
• A server which is a type of long-running program called a
daemon process.
• A REST API which specifies interfaces that programs can
use to talk to the daemon and instruct it what to do.
• A command line interface (CLI) client.
33. Docker images
• A Docker image is a read-only template. For example, an
image could contain an Ubuntu operating system with
Apache and your web application installed.
• Images are used to create Docker containers. Docker
provides a simple way to build new images or update
existing images, or you can download Docker images that
other people have already created.
• Docker images are the build component of Docker.
34. Docker File
• Docker can build images automatically by reading the
instructions from a Dockerfile.
• A Dockerfile is a text document that contains all the
commands a user could call on the command line to assemble
an image.
• Using docker build users can create an automated build that
executes several command-line instructions in succession.
• The docker build command builds an image from a Dockerfile
and a context.
35. Docker File - Example
• Instructions
INSTRUCTION arguments
Eg. RUN echo 'we are running some # of cool things!’
• Parser directives:
FROM ImageName
Example:
#Comment
FROM windowsservercore
COPY testfile.txt c:
RUN dir c:
To Build image using this file:
docker build -f /path/to/a/Dockerfile .
36. Docker Hub
• Docker registries hold images.
• These are public or private stores from which you upload
or download images.
• The public Docker registry is provided with the Docker
Hub. (hub.docker.com)
• It serves a huge collection of existing images for your use.
These can be images you create yourself or you can use
images that others have previously created.
• Docker registries are the distribution component of
Docker.
37. Docker CLI
• The CLI makes use of the Docker REST API to control or
interact with the Docker daemon through scripting or
direct CLI commands.
• Many other Docker applications make use of the
underlying API and CLI.
• The CLI is also used to issue commands.
38. Kubernetes
• Kubernetes is an open-source platform for
automating deployment, scaling, and
operations of application containers across
clusters of hosts, providing container-centric
infrastructure.
• With Kubernetes, you can:
• Deploy your applications quickly and predictably.
• Scale your applications on the fly.
• Seamlessly roll out new features.
• Optimize use of your hardware by using only the
resources you need
40. Kubernetes Features
Kubernetes is:
• portable: public, private, hybrid, multi-cloud
• extensible: modular, pluggable, hookable,
composable
• self-healing: auto-placement, auto-restart,
auto-replication, auto-scaling
The Kubernetes project was started by Google
in 2014.