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Introduction
There are two versions of swarm, an old one that is deprecated and not maintained, and a newer one that is maintained and works quite well.
“Do not confuse Docker Swarm mode with Docker Classic Swarm which is no longer actively developed.”
Mirantis uses the internals of swarm in their Kubernetes offering. And the OCI maintains Swarmkit part if the Moby project (Docker’s upstream).
Mirantis acquired Docker Enterprise in 2019. Docker and Mirantis both coordinate contributions to the core docker CE. Mirantis Acquires Docker Enterprise Platform Business
For what it’s worth anecdotally, I just rebuilt my entire system from the ground up. New hardware, new network back bone, new storage, all of it. New setup is three distributed storage nodes and five compute nodes and the orchestrator for all of it is Swarm.
handling clustered storage in your set up: Glusterfs