#docker cloud

[kureeeen]

What’s the difference between docker compose and Kubernetes?

What’s the difference between docker compose and kubernetes? - Stack Overflow

Docker

Docker is the container technology that allows you to containerize your applications. Docker is the core for using the other technologies.

Docker Compose

Allows configuring and starting multiple docker containers. This is mostly used as a helper when you want to start multiple docker containers and don’t want to start each one separately using docker run … . Docker compose is used for starting containers on the same host.

To short

::docker-compose:: is a tool that takes a YAML file which describes your multi-container application and helps you create, start/stop, remove all those containers without having to type multiple docker ... commands for each container.

from the docs

Compose is a tool for defining and running multi-container Docker applications. With Compose, you use a YAML file to configure your application’s services. Then, with a single command, you create and start all the services from your configuration.

Compose has commands for managing the whole lifecycle of your application: * Start, stop, and rebuild services * View the status of running services * Stream the log output of running services * Run a one-off command on a service

Docker Swarm

Docker swarm is for running and connecting containers on multiple hosts. Docker swarm is a container cluster management and orchestration tool. It manages containers running on multiple hosts and does things like scaling, starting a new container when one crashes, networking containers…

Docker swarm is docker in production. It is the native docker orchestration tool that is embedded in the Docker Engine.

The docker swarm file named stack file is very similar to a docker compose file.

Kubernetes

A container orchestration tool developed by Google. Kubernetes goal is very similar as that for Docker swarm.

To short

::Kubernetes:: is a platform for managing containerized workloads and services, that facilitates both declarative configuration and automation.

from Introduction to Kubernetes

Introduction to Kubernetes Kubernetes is a container orchestrator like Docker Swarm, Mesos Marathon, Amazon ECS, Hashicorp Nomad. Container orchestrators are the tools which group hosts together to form a cluster, and help us make sure applications: * are fault-tolerant, * can scale, and do this on-demand * use resources optimally * can discover other applications automatically, and communicate with each other * are accessible from the external world * can update/rollback without any downtime.

The kind of problems Kubernetes tries to solve:

12-factor apps

Automatic bin packing

self-healing mechanisms,

Horizontal scaling,

Service discovery and Load balancing,

Automated rollouts and rollbacks,

Blue-Green deployments / Canary deployments

Secrets and configuration management,

Storage orchestration

Docker Cloud

A paid enterprise docker service that allows you to build and run containers on cloud servers or local servers. It provides a Web UI and a central control panel to run and manage containers while providing all the docker features in a user friendly Web interface.

Update:

Docker - Docker Cloud Migration Notification and FAQs

The services on Docker Cloud that provide application, node, and swarm cluster management will be shutting down on May 21… automated builds and registry storage services, will not be affected and will continue to be available

docker #docker-compose #kubernetes #docker-swarm

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[thedigitalgaragestuff-blog]

Decoding Docker Cloud - the state-of-the-art open-source software container

Docker is an open-source software container system. A container system helps a software to run glitch-free when it is moved from one environment (like from design to production). The container will have all the necessary facilities like tools, operating system, code, host, libraries, etc. that the software will need to function without experiencing issues.

Unlike in traditional virtual machine (VM), where the entire ecosystem for running the software is created completely, Docker PaaS allows applications to run on the same LInux Kernel. Only such infrastructure that the kernel does not have is shipped along with the software. This helps reduce a large chunk of unnecessary space of the applications thus boosting its agility significantly.

Who uses Docker containers?

Docker containers are meant primarily for:

1. Developers

2. Administrators

Its dual benefit ensures a steady presence in most Devops operations. Docker cloud empowers developers to focus on the programming alone without having to be distracted or worry about the end system where it will ultimately run on. Moreover, they also get access to a wide variety of applications that are ready to fit in and function in the Docker container platform.

This also translates into a major benefit for operations staff and system administrators. The ready availability of applications reduces the need to develop or manage additional applications. It simplifies their task while delivering equal performance as in a native VM environment.

When to use Docker containers?

Docker is ideal for use in the following scenarios:

• When configuration needs to be simplified for application running

• When the differences arising in code pipeline movement is to be reduced

• When developer productivity is to maximized at zero dollar cost

• When all existing server systems need to brought under one roof

There is much use case scenarios to Docker containers. From debugging to multi-tenancy Docker can help run diverse applications run smoother and easier without being bogged down by system indifferences.

[thedigitalgaragestuff-blog]

More Reasons for Switching to Docker Cloud

Docker has become one of the best choices as a Platform as a service (PaaS) options, for many types of organizations. Its complete and adaptable technology suite is being used by both development as well as IT operations teams of small to large scale enterprises. For developing and deploying distributed applications, through on-premises or cloud, Docker PaaS is an ultimate choice.

How Docker Cloud Helping Enterprises:

Ranging from small start-up companies to mid-scale and established enterprises, all sorts of ventures are making the most out of this technology. The developers of Docker and belonging technologies are now looking at its broader side. To develop and deploy multiple complex applications smoothly, its cloud package has given the ultimate platform.

Integrating the Dockerized apps or the complete Docker PaaS system plus managing them have become more adaptable. The barriers of server technology limitations and the need of scalable resources could be managed smartly on Docker Cloud.

Nowadays, compared to other standalone technology platforms, the web-based UI of Docker is offering a powerful dashboard with all controls. Whether the apps are being managed by an individual or a team, deployment and performance monitoring gets complete attention.

In terms of cost and resource utilizations, its cloud platform emerged as a cost-efficient and purely scalable invention. On the other hand, while switching to a new or advanced technology, many people question its stability, dependability and security features. Being an open source project, Docker has a large community for technical support and its newest technology add-ons make it more secure.