docker/swarmArchived
Swarm
Swarm is a container clustering system that pools multiple Docker hosts into a single virtual host, enabling transparent container scheduling and management across the cluster. It exposes the standard Docker API so existing Docker-compatible tools and clients can operate on the cluster without any modifications.
The system uses a distributed key-value store to maintain cluster state, enabling consistent scheduling decisions across nodes. A Docker-API proxy layer translates standard API calls into cluster-wide operations, while a host-pool abstraction hides individual host details from the client. Swarm supports swapping scheduling backends between a simple default and production-grade systems like Mesos for larger deployments, and includes health-check-based rescheduling that automatically moves failed containers to healthy hosts.
Container placement can be managed through a round-robin algorithm when no advanced scheduler is configured, and the pluggable scheduler backend allows runtime strategy changes. The system scales containers across hosts transparently, treating the entire cluster as a single Docker endpoint.
Features
- Container Cluster Deployments - Pools multiple Docker hosts into a single virtual host for transparent container scheduling and management.
- Cluster State Stores - Uses a distributed key-value store to maintain cluster state for consistent scheduling decisions.
- Container Hosting - Pools multiple Docker hosts into a single virtual host to schedule and manage containers transparently across the cluster.
- Docker API Proxies - Exposes a single Docker API endpoint that proxies standard calls across the cluster.
- Host Pool Managers - Pools multiple Docker daemons into a single virtual host, hiding individual host details.
- Scheduling Backend Swappers - Swaps the scheduling backend between a simple default and a production-grade system like Mesos.
- Scheduling Backend Swappers - Swaps the scheduling backend between a simple default and a production-grade system like Mesos.
- Scheduler Backend Swappers - Swaps scheduling strategies at runtime by delegating container placement to interchangeable backends.
- Health-Check-Based Reschedulers - Monitors container health and automatically reschedules failed containers onto healthy hosts.
- Application Platforms - Docker-native clustering and orchestration system.
- Orchestration and Management - Native clustering and scheduling for containerized applications.
