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Native Docker Clustering with Swarm by Chanwit Kaewkasi, Fabrizio Soppelsa

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Cluster management

To illustrate cluster operations better, let's take a look at an example made up of three managers and ten workers. The first basic operation is listing nodes, with docker node ls command:

Cluster management

You can reference to the nodes by calling them either by their hostname (manager1) or by their ID (ctv03nq6cjmbkc4v1tc644fsi). The other columns in this list statement describes the properties of the cluster nodes.

  • STATUS is about the physical reachability of the node. If the node is up, it's Ready, otherwise it's Down.
  • AVAILABILITY is the node availability. A node state can either be Active (participating in the cluster operations), Pause (in ...

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