Titlebook: Docker Management Design Patterns; Swarm Mode on Amazon Deepak Vohra Book 2017 Deepak Vohra 2017 Docker.Container.Linux.operating system.so

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Sally Sanger,Peter A. Bath,Jo BatesThe Docker Swarm mode is Docker-native as of Docker 1.12 and is used to create distributed and scalable services for developing Docker applications.

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Using Docker for AWS to Create a Multi-Zone Swarm,Docker Swarm is provisioned by first initiating a Swarm to create a manager node and subsequently joining worker nodes to that manager node. Docker Swarm provides distributed service deployment for Docker applications.

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Docker Services,A Docker container contains all the binaries and dependencies required to run an application. A user only needs to run a Docker container to start and access an application. The CoreOS Linux operating system has Docker installed and the Docker commands may be run without even installing Docker.

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Scaling Services,Docker Engine is suitable for developing lightweight applications that run in Docker containers that are isolated from each other. Docker containers are able to provide their own networking and filesystem.

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Rolling Updates,The Docker Swarm mode provisions services consisting of replicas that run across the nodes in the Swarm. A service definition is created when a service is first created/defined

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Networking,Networking on a Docker Engine is provided by a bridge network, the docker0 bridge. The docker0 bridge is local in scope to a Docker host and is installed by default when Docker is installed. All Docker containers run on a Docker host and are connected to the docker0 bridge network. They communicate with each other over the network.

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Logging and Monitoring,Docker Swarm mode does not include a native monitoring service for Docker services and containers. Also the experimental feature to get service logs is a command-line feature and required to be run per service. A logging service with which all the services’ logs and metrics could be collected and viewed in a dashboard is lacking.