I am new to docker, I can not differentiate the two concepts between Clustering and Orchestration in docker swarm. Is there any can help me to make it clear? Thanks!
Cluster is a group of containers or nodes. The physical state of being them together can be referred to a cluster.
Orchestration is a referred to a more intelligent activity. Orchestration requires a distributed platform, independent from infrastructure, that stays online through the entire lifetime of your application, surviving hardware failure and software updates. More here