Swarm features
The main purpose of Swarm was already defined, but how does it accomplish its goals? Here are its key features:
- Swarm v1 supports Docker Engine of version 1.6.0 or more recent. Swarm v2 has been in built for Docker Engine since version 1.12.
- APIs of each release of Swarm will be compatible with Docker APIs on the same release train. API compatibility is maintained for one version backward.
- In Swarm v1, the leader-election mechanism is implemented for multiple Swarm masters using the leadership library (only supported when deploying Swarm with a discovery service, such as Etcd, Consul, or Zookeeper).
- In Swarm v2, leader election has been built using the decentralized mechanism. Swarm v2 does not need a dedicated set of discovery services ...
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