CoreOS vs Docker Swarm: What are the differences?
CoreOS: Linux for Massive Server Deployments. CoreOS is designed for security, consistency, and reliability. Instead of installing packages via yum or apt, CoreOS uses Linux containers to manage your services at a higher level of abstraction. A single service's code and all dependencies are packaged within a container that can be run on one or many CoreOS machines; Docker Swarm: Native clustering for Docker. Turn a pool of Docker hosts into a single, virtual host. Swarm serves the standard Docker API, so any tool which already communicates with a Docker daemon can use Swarm to transparently scale to multiple hosts: Dokku, Compose, Krane, Deis, DockerUI, Shipyard, Drone, Jenkins... and, of course, the Docker client itself.
CoreOS and Docker Swarm are primarily classified as "Operating Systems" and "Container" tools respectively.
"Container management" is the primary reason why developers consider CoreOS over the competitors, whereas "Docker friendly" was stated as the key factor in picking Docker Swarm.
Docker Swarm is an open source tool with 5.63K GitHub stars and 1.11K GitHub forks. Here's a link to Docker Swarm's open source repository on GitHub.
According to the StackShare community, Docker Swarm has a broader approval, being mentioned in 83 company stacks & 38 developers stacks; compared to CoreOS, which is listed in 45 company stacks and 12 developer stacks.
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What is CoreOS?
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