As with all Docker tooling, this integration is always about choice and flexibility for users. “Swarm mode” is an optional feature that users can select to “turn on” built-in orchestration, or they can also elect to use either their own custom tooling or third-party orchestrators that run on Docker Engine. This approach aligns with the Docker platform’s batteries included but swappable architecture, which has spurred the growth of a vibrant and collaborative ecosystem.
“As the adoption curve for Docker continues to grow, developers have encountered growing pains with orchestration at scale,” said Fintan Ryan, industry analyst with RedMonk. “With the inclusion of secure built-in orchestration in the 1.12 release, Docker is providing developers with a simple-to-use, yet extremely powerful, orchestration tool while further investing in a consistent, easy-to-manage experience for operations.”
As organizations begin to make increasing investments in containerization, and with more than 60 percent of them running Docker in production, they are seeking more sophisticated orchestration tooling to expand their deployments across both applications and teams. Docker 1.12 addresses these requirements with functionality that spans the entire application stack across compute, network and storage.
Ease of Use
Docker 1.12 dramatically simplifies the process of creating groups of Docker Engines, also known as swarms. The self-organizing, self-healing capabilities of swarms are now backed by automated service discovery and a built-in distributed datastore. As a result, it takes just one command to add a Docker Engine and horizontally scale a swarm.
The new service deployment API describes all the resources and components with a single command that allows operations teams to run and scale a service. Through the API, the swarm is aware of the application defined and will continuously check and reconcile the environment against the requirements of the application when something adverse happens. Unlike other systems, the swarm itself has no single point of failure. The state of all services is replicated in real time across a group of managers so containers can be rescheduled after any node failure.
Performance at Scale
Docker orchestration includes a unique in-memory caching layer that maintains state of the entire swarm, providing a non-blocking architecture which assures scheduling performance even during peak times. Additionally, the system has a built-in routing mesh technology that addresses the challenge of how to provide container-aware load balancing. The routing mesh ensures that requests are made to the right containers regardless of where they have been scheduled within the swarm.
Secure By Default
Each Engine is automatically assigned a cryptographic identity which ensures that only validated Engines can be accepted into a swarm. Moreover, Docker Engine comes with mutually authenticated TLS, providing authentication, authorization and end-to-end encrypted communications among every node participating in the swarm, without the operator having to take any steps to enable it.
There are three ways that users can get Docker 1.12, which is currently a release candidate with general availability planned for July 2016. First, it is available now as part of the newly opened public beta of Docker for Mac and Docker for Windows athttps://www.docker.com/getdocker. Second, it is available through cloud-optimized experiences that bundle custom plugins that provide deep integration between Docker and the target platform capabilities including networking, load balancing and SSH key management. Docker for AWS and Docker for Azure are the best ways to deploy Docker Engine on these platforms and are available in private beta at https://beta.docker.com. Last, Docker 1.12 is also available as a binary download or a package for all major Linux distributions at https://docs.docker.com/engine/installation/linux.
For more information:
- Blog: Docker 1.12: Now with Built-in Orchestration!https://blog.docker.com/2016/06/docker-1-12-built-in-orchestration/
- Blog: Announcing the Docker for Mac and Windows Public Beta –https://blog.docker.com/2016/06/docker-mac-windows-public-beta/
- Blog: Introducing the Docker for AWS and Azure Beta –https://blog.docker.com/2016/06/azure-aws-beta/
- Docker App Bundle: https://blog.docker.com/2016/06/docker-app-bundle/
- Docker online meetup for 1.12
- Sign up for our newsletter
About Docker, Inc.
Docker, Inc. is the company behind the Docker open source platform, and is the chief sponsor of the Docker ecosystem. Docker is an open platform for developers and system administrators to build, ship and run distributed applications. With Docker, IT organizations shrink application delivery from months to minutes, frictionlessly move workloads between data centers and the cloud and can achieve up to 20X greater efficiency in their use of computing resources. Inspired by an active community and by transparent, open source innovation, Docker containers have been downloaded more than 4.1 billion times and Docker is used by millions of developers across thousands of the world’s most innovative organizations, including ADP, Baidu, the BBC, Goldman Sachs, Groupon, ING, Yelp, and Spotify. Docker’s rapid adoption has catalyzed an active ecosystem, resulting in more than 4,300,000 “Dockerized” applications, over 100 Docker-related startups and integration partnerships with AWS, Cloud Foundry, Google, IBM, Microsoft, OpenStack, Rackspace, Red Hat and VMware.
Heather Fitzsimmons, 650-279-4360